Active NPI 1447257100 Individual Practitioner Male Practitioner

Dr. William Edward Gilli , MD

Internal Medicine • Bakersfield, CA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. William Gilli, MD is a certified Internal Medicine practicing in Bakersfield, CA. With approximately 43 years of clinical experience since graduating from University Of Southern California Keck School Of Medicine in 1983, Dr. Gilli delivers high-quality medical care to the local community at 8327 BRIMHALL RD.

Dr. Gilli is affiliated with Mesa West Medical Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, influenza vaccine, trivalent derived from recombinant dna. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

8327 Brimhall Rd
Suite #704

Bakersfield, CA 933124048

Telephone 6616176750

Fax 6616176760

Associated Practice Facility / Clinic

🏢 Mesa West Medical Inc Facility NPI 1821294596

Medicare Profile & Education

Medical School

University Of Southern California Keck School Of Medicine

Graduation Year

1983

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Bakersfield, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

43 Yrs +18.1 yrs vs City Avg

City Avg: 24.9 Yrs

State Avg: 26.6 Yrs

Regional Practice Density

219 Specialists

Practicing in Bakersfield, CA (18502 Statewide)

Telehealth Adoption Rate

23.3% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

31.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Gilli (43 Years) 43 Yrs

Bakersfield Specialty Average (24.9 Years) 24.9 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	746	328	$116.00	$106.13
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	441	261	$200.09	$175.59
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	186	186	$200.00	$124.23
90673 Influenza vaccine, trivalent derived from recombinant dna	184	183	$100.11	$81.82
G0008 Administration of influenza virus vaccine	178	177	$28.75	$28.17
G0444 Annual depression screening, 5 to 15 minutes	165	165	$50.00	$17.43
G0442 Annual alcohol misuse screening, 5 to 15 minutes	146	146	$25.00	$18.06
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	124	76	$50.00	$23.73
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	84	65	$35.00	$15.72
93000 Routine ekg using at least 12 leads including interpretation and report	82	76	$72.00	$14.16
99213 Established patient office or other outpatient visit, typically 15 minutes	80	43	$90.00	$82.91
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	72	35	$79.00	$41.30
81002 Urinalysis, manual test	66	46	$14.00	$3.41
96116 Exam of neurobehavioral status, first hour	36	36	$176.00	$89.80
99457 Management using the results of remote vital sign monitoring per calendar month, first 20 minutes	31	11	$60.00	$47.80
99454 Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days	29	11	$65.00	$47.76
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	26	26	$217.26	$212.92
99422 Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes	24	24	$54.86	$24.00
99423 Online digital evaluation and management service for an established patient for up to 7 days, total time 21 or more minutes	24	22	$87.34	$38.75
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	21	16	$50.00	$13.67
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	19	13	$76.56	$55.67
G0009 Administration of pneumococcal vaccine	17	17	$30.91	$30.29
90715 Diphtheria, tetanus, and acellular pertussis vaccine (7 years or older)	13	13	$60.00	$37.99
J1010 Injection, methylprednisolone acetate, 1 mg	13	12	$23.31	$0.13
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$225.00	$160.90

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	725	329	$116.00	$111.15
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	444	278	$200.00	$182.77
90662 Influenza vaccine split virus, preservative free	165	165	$75.00	$71.93
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	148	148	$200.00	$132.75
G0008 Administration of influenza virus vaccine	140	139	$28.75	$28.17
G0444 Annual depression screening, 5 to 15 minutes	132	132	$50.00	$18.36
G0442 Annual alcohol misuse screening, 5 to 15 minutes	125	125	$25.00	$18.71
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	101	67	$50.00	$25.86
99213 Established patient office or other outpatient visit, typically 15 minutes	89	50	$90.00	$86.26
93000 Routine ekg using at least 12 leads including interpretation and report	76	75	$72.00	$14.95
81002 Urinalysis, manual test	50	31	$14.00	$3.41
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	49	29	$79.00	$43.01
99423 Online digital evaluation and management service for an established patient for up to 7 days, total time 21 or more minutes	45	37	$87.34	$41.04
99457 Management using the results of remote vital sign monitoring per calendar month, first 20 minutes	41	15	$60.00	$49.76
96116 Exam of neurobehavioral status, first hour	41	41	$176.00	$94.86
99454 Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days	32	15	$65.00	$53.12
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	26	19	$30.12	$14.74
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	25	25	$175.00	$171.50
G0009 Administration of pneumococcal vaccine	18	18	$30.91	$30.29
99497 Advance care planning, first 30 minutes	18	17	$100.00	$83.55
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	15	14	$76.56	$57.18
J1040 Injection, methylprednisolone acetate, 80 mg	14	14	$27.00	$12.23
99422 Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes	12	12	$54.86	$25.64
69210 Removal of impacted ear wax	12	12	$55.09	$49.07
99496 Transitional care management services for problem of high complexity	11	11	$275.00	$256.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	788	375	$116.00	$110.65
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	442	276	$200.00	$185.48
90682 Influenza vaccine, quadrivalent derived from recombinant dna	199	191	$65.00	$63.78
G0008 Administration of influenza virus vaccine	184	178	$28.75	$28.20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	179	179	$200.00	$136.20
G0442 Annual alcohol misuse screening, 5 to 15 minutes	177	177	$25.00	$18.85
G0444 Annual depression screening, 5 to 15 minutes	177	177	$50.00	$18.52
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	116	75	$50.00	$26.90
99213 Established patient office or other outpatient visit, typically 15 minutes	103	69	$90.00	$86.37
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	71	38	$79.00	$42.85
99423 Online digital evaluation and management service for an established patient for up to 7 days, total time 21 or more minutes	68	62	$87.34	$43.07
81002 Urinalysis, manual test	61	41	$14.00	$3.44
93000 Routine ekg using at least 12 leads including interpretation and report	54	51	$72.00	$14.94
99422 Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes	48	42	$54.86	$26.65
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	46	37	$76.56	$56.97
J1030 Injection, methylprednisolone acetate, 40 mg	25	17	$27.00	$6.25
99497 Advance care planning, first 30 minutes	22	22	$99.55	$87.78
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	21	16	$30.12	$15.02
96116 Exam of neurobehavioral status, first hour	18	18	$176.00	$89.52
G0009 Administration of pneumococcal vaccine	17	17	$30.91	$30.56
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$225.00	$171.81
J1040 Injection, methylprednisolone acetate, 80 mg	14	13	$27.00	$10.83
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	13	13	$175.00	$171.90
99496 Transitional care management services for problem of high complexity	12	12	$275.00	$248.29
99498 Advance care planning by the physician or other qualified health care professional	11	11	$90.00	$76.02

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	816	362	$116.00	$114.50
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	438	262	$200.00	$188.32
90682 Influenza vaccine, quadrivalent derived from recombinant dna	164	163	$65.00	$64.98
G0008 Administration of influenza virus vaccine	160	160	$28.75	$17.91
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	157	157	$200.10	$138.68
G0444 Annual depression screening, 5 to 15 minutes	140	140	$50.00	$18.96
G0442 Annual alcohol misuse screening, 5 to 15 minutes	139	139	$25.00	$18.81
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	109	73	$50.00	$27.42
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	98	67	$76.56	$56.97
99422 Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes	79	64	$54.86	$27.72
93000 Routine ekg using at least 12 leads including interpretation and report	60	58	$72.00	$15.55
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	58	33	$79.00	$43.25
99497 Advance care planning, first 30 minutes	57	57	$100.00	$88.45
99423 Online digital evaluation and management service for an established patient for up to 7 days, total time 21 or more minutes	42	36	$87.34	$42.70
81002 Urinalysis, manual test	39	31	$14.00	$3.48
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	35	14	$30.12	$14.93
99213 Established patient office or other outpatient visit, typically 15 minutes	28	26	$90.00	$88.56
J1030 Injection, methylprednisolone acetate, 40 mg	25	15	$27.00	$5.68
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes	21	12	$48.57	$15.74
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	17	17	$250.00	$231.38
96116 Exam of neurobehavioral status, first hour	16	16	$176.00	$94.05
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	16	16	$125.00	$124.68
87635 Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen	14	13	$120.00	$51.31
G0009 Administration of pneumococcal vaccine	14	14	$30.91	$17.91
99498 Advance care planning by the physician or other qualified health care professional	14	14	$90.00	$76.55
17000 Destruction of skin growth	14	13	$90.00	$70.45
17003 Destruction of precancer skin growth, 2-14 growths	12	11	$25.00	$7.02
99421 Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes	11	11	$26.70	$14.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	662	328	$200.00	$143.30
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	555	293	$116.00	$106.91
99422 Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes	390	262	$57.61	$28.39
90682 Influenza vaccine, quadrivalent derived from recombinant dna	170	170	$65.00	$60.98
G0008 Administration of influenza virus vaccine	167	167	$28.75	$17.70
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	158	158	$200.00	$115.63
G0442 Annual alcohol misuse screening, 5 to 15 minutes	139	139	$25.00	$17.51
G0444 Annual depression screening, 5 to 15 minutes	133	133	$50.00	$17.43
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	114	81	$50.00	$25.69
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	99	53	$76.56	$45.93
99421 Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes	85	71	$26.70	$14.30
93000 Routine ekg using at least 12 leads including interpretation and report	69	68	$72.00	$17.42
96116 Exam of neurobehavioral status, first hour	43	42	$176.00	$99.17
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	40	25	$79.00	$41.45
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	40	26	$30.12	$14.45
81002 Urinalysis, manual test	36	27	$14.00	$3.44
G0009 Administration of pneumococcal vaccine	20	20	$30.91	$17.70
99497 Advance care planning, first 30 minutes	20	20	$100.00	$86.48
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	20	18	$20.00	$14.63
99496 Transitional care management services for problem of high complexity	18	15	$275.00	$233.51
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	16	16	$125.00	$119.92
J1040 Injection, methylprednisolone acetate, 80 mg	14	13	$27.00	$11.69
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$225.00	$165.23
J1030 Injection, methylprednisolone acetate, 40 mg	11	11	$27.00	$6.07
90471 Administration of 1 vaccine	11	11	$22.03	$14.53

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	901	356	$116.90	$108.83
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	631	297	$200.00	$145.51
G0008 Administration of influenza virus vaccine	222	216	$28.75	$17.35
G0442 Annual alcohol misuse screening, 5 to 15 minutes	201	201	$25.00	$18.09
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	200	200	$200.00	$114.14
G0444 Annual depression screening, 5 to 15 minutes	197	197	$50.00	$18.09
93000 Routine ekg using at least 12 leads including interpretation and report	184	169	$72.00	$17.21
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	143	83	$76.56	$45.55
90682 Influenza vaccine, quadrivalent derived from recombinant dna	134	134	$60.00	$54.89
90756 Vaccine for influenza for injection into muscle	86	86	$30.00	$26.13
G0009 Administration of pneumococcal vaccine	84	83	$30.91	$17.35
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	77	36	$143.00	$71.59
81002 Urinalysis, manual test	68	49	$14.00	$3.41
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	52	36	$79.00	$41.47
90670 Pneumococcal vaccine for injection into muscle	47	47	$206.81	$195.29
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	42	42	$111.67	$103.90
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	39	36	$30.12	$16.88
99497 Advance care planning, first 30 minutes	39	38	$100.00	$84.57
99238 Hospital discharge day management, 30 minutes or less	36	34	$144.00	$72.37
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	31	27	$50.00	$25.29
J1030 Injection, methylprednisolone acetate, 40 mg	28	22	$27.00	$6.27
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	25	24	$270.00	$134.60
99213 Established patient office or other outpatient visit, typically 15 minutes	24	19	$90.00	$74.55
J1040 Injection, methylprednisolone acetate, 80 mg	23	21	$27.00	$12.13
99496 Transitional care management services for problem of high complexity	18	16	$275.00	$231.63
17000 Destruction of skin growth	18	14	$90.00	$66.15
69210 Removal of impacted ear wax	17	14	$55.09	$46.24
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	17	17	$225.00	$205.06
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report	14	14	$72.00	$17.19
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	12	12	$20.00	$14.34
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$234.64	$161.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,228	417	$119.54	$107.39
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	293	180	$200.00	$145.61
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	219	213	$20.00	$17.48
G0008 Administration of influenza virus vaccine	216	211	$28.75	$21.48
G0442 Annual alcohol misuse screening, 5 to 15 minutes	180	180	$25.00	$18.62
G0444 Annual depression screening, 5 to 15 minutes	176	176	$50.00	$18.26
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	164	164	$200.00	$116.72
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	163	67	$143.00	$72.58
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	107	46	$38.00	$22.15
93000 Routine ekg using at least 12 leads including interpretation and report	103	86	$72.00	$17.18
G0009 Administration of pneumococcal vaccine	88	86	$30.91	$21.48
85610 Blood test, clotting time	84	11	$23.00	$4.75
81002 Urinalysis, manual test	78	50	$14.00	$3.41
99238 Hospital discharge day management, 30 minutes or less	71	66	$144.00	$73.38
90670 Pneumococcal vaccine for injection into muscle	65	65	$180.00	$176.40
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	58	55	$270.00	$136.07
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	56	31	$79.00	$42.36
J1030 Injection, methylprednisolone acetate, 40 mg	42	28	$27.00	$6.70
99213 Established patient office or other outpatient visit, typically 15 minutes	34	32	$103.18	$68.33
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	33	28	$30.12	$21.07
20610 Aspiration and/or injection of fluid from large joint	30	15	$150.00	$59.36
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	27	27	$85.00	$83.30
J0696 Injection, ceftriaxone sodium, per 250 mg	25	12	$25.00	$0.61
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report	25	25	$72.00	$17.16
99497 Advance care planning, first 30 minutes	25	25	$100.00	$84.54
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	23	23	$229.61	$163.16
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	19	19	$398.00	$202.00
69210 Removal of impacted ear wax	19	17	$55.09	$48.89
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	17	14	$50.00	$25.52
17000 Destruction of skin growth	14	13	$90.00	$67.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$178.91	$105.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,229	396	$119.94	$106.35
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	267	143	$200.07	$143.99
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	257	104	$143.00	$73.56
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	217	217	$200.00	$113.29
G0444 Annual depression screening, 5 to 15 minutes	216	216	$50.00	$18.10
85610 Blood test, clotting time	190	14	$23.00	$5.28
G0008 Administration of influenza virus vaccine	185	181	$28.75	$26.83
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	183	182	$20.00	$17.48
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	179	38	$38.00	$20.55
G0442 Annual alcohol misuse screening, 5 to 15 minutes	165	165	$25.00	$18.10
81002 Urinalysis, manual test	123	92	$14.00	$3.43
G0009 Administration of pneumococcal vaccine	98	98	$30.91	$26.83
93000 Routine ekg using at least 12 leads including interpretation and report	93	88	$72.00	$17.11
99238 Hospital discharge day management, 30 minutes or less	76	74	$144.00	$74.39
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	76	74	$270.00	$139.05
90670 Pneumococcal vaccine for injection into muscle	72	72	$180.00	$176.40
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	48	36	$25.56	$23.23
99213 Established patient office or other outpatient visit, typically 15 minutes	44	40	$104.99	$66.77
J1030 Injection, methylprednisolone acetate, 40 mg	44	29	$27.00	$5.90
G0447 Face-to-face behavioral counseling for obesity, 15 minutes	35	27	$40.86	$25.29
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	30	30	$85.00	$83.30
20610 Aspiration and/or injection of fluid from large joint	29	12	$149.79	$55.46
G0179 Physician re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians to affirm the initial imp	27	17	$79.00	$41.67
G0403 Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report	23	23	$72.00	$17.07
69210 Removal of impacted ear wax	22	20	$55.09	$49.10
95250 Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment	18	16	$180.00	$162.89
95251 Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report	16	15	$50.00	$43.18
J1040 Injection, methylprednisolone acetate, 80 mg	16	13	$27.00	$10.87
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$225.00	$162.99
G0181 Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow	13	13	$138.17	$107.19
99497 Advance care planning, first 30 minutes	12	12	$94.17	$80.68
94640 Inhalation treatment for airway obstruction or sputum production	12	11	$30.00	$19.11
17000 Destruction of skin growth	12	12	$90.00	$67.21
99354 Prolonged office or other outpatient service first hour	11	11	$122.91	$118.07

Medical Specialties & State Licenses

CMS Verified: 2024-10-31

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License CA G53033

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

GR0057501 (CA)

Commercial Insurance / Payer ID Ca License

G53033 (CA)

Hospital & Practice Group Affiliations

Mesa West Medical Inc

8327 Brimhall Rd, Bakersfield, CA 933122250

Phone: 6618297677202

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

2 Associated Practitioners

Tracy Simonsen , NP

Nurse Practitioner - Family

NPI 1023195005

Nurse Practitioner

Dr. Jeri Williams , MD

Psychiatry & Neurology - Neurology

NPI 1285825455

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

7 Historical Events

📍

Updated Practice Location October 31, 2024

Registered at 8327 BRIMHALL RD, SUITE #704, BAKERSFIELD, CA 933124048 (Tel: 6616176750)

✅

NPI Profile Active July 16, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location July 16, 2014

Registered at 8327 BRIMHALL ROAD, SUITE #704, BAKERSFIELD, CA 93312 (Tel: 6616176750)

📍

Updated Business Mailing Address July 16, 2014

Registered at 8327 BRIMHALL RD, SUITE #704, BAKERSFIELD, CA 933124048 (Tel: 6616176750)

👤

Provider Name / Credentials Updated July 16, 2014

Recorded as WILLIAM GILLI, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 16, 2014

Internal Medicine (License #G53033 in CA)

🟢

Initial NPI Registration & Enumeration July 07, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

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NPI Administrative Meta

NPI Number: 1447257100

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 07, 2005

Last Update: October 31, 2024

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

8327 Brimhall Rd, Suite #704

Bakersfield, CA 933124048

Phone: 6618297677

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.