Active NPI 1437256906 Individual Practitioner Male Practitioner

Dr. William Chunghun Sim , MD

Internal Medicine • Downey, CA

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. William Sim, MD is a certified Internal Medicine practicing in Downey, CA. With approximately 36 years of clinical experience since graduating from Stanford University School Of Medicine in 1990, Dr. Sim delivers high-quality medical care to the local community at 11480 BROOKSHIRE AVE.

Dr. Sim is affiliated with Frischer Medical Group Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include residence visit for established patient with moderate level of medical decision making, per day, if using time, at least, established patient outpatient office visit, residence visit for established patient with low level of medical decision making, per day, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

11480 Brookshire Ave
200

Downey, CA 902419998

Telephone 5628060874

Fax 5629274801

Associated Practice Facility / Clinic

🏢 Frischer Medical Group Inc Facility NPI 1659328797

Medicare Profile & Education

Medical School

Stanford University School Of Medicine

Graduation Year

1990

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Downey, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

36 Yrs +17.4 yrs vs City Avg

City Avg: 18.6 Yrs

State Avg: 26.6 Yrs

Regional Practice Density

118 Specialists

Practicing in Downey, CA (18502 Statewide)

Telehealth Adoption Rate

10.2% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

48.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Sim (36 Years) 36 Yrs

Downey Specialty Average (18.6 Years) 18.6 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
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	1,647	315	$450.00	$134.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	677	331	$200.00	$139.55
99213 Established patient office or other outpatient visit, typically 15 minutes	640	238	$150.00	$99.17
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	564	235	$300.00	$80.88
J1010 Injection, methylprednisolone acetate, 1 mg	510	11	$2.00	$0.13
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	423	245	$250.00	$112.83
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	379	62	$10.00	$0.96
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	215	30	$150.00	$67.70
99345 Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes	125	125	$300.00	$212.84
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	109	58	$50.00	$15.87
20610 Aspiration and/or injection of fluid from large joint	53	36	$145.00	$74.31
93000 Routine ekg using at least 12 leads including interpretation and report	51	46	$50.00	$15.70
81002 Urinalysis, manual test	47	29	$15.00	$3.41
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	39	34	$250.00	$195.12
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	27	23	$125.00	$62.26
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$275.00	$180.81
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	12	12	$250.00	$141.17

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes	1,541	279	$450.00	$137.44
99213 Established patient office or other outpatient visit, typically 15 minutes	791	251	$150.00	$100.09
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	598	309	$199.96	$141.17
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes	449	189	$300.00	$82.16
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	325	44	$150.00	$68.59
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	291	48	$10.00	$1.07
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	159	64	$50.00	$15.94
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	115	76	$250.00	$114.03
99345 Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes	108	108	$640.28	$218.27
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	73	61	$125.00	$62.64
81002 Urinalysis, manual test	63	35	$15.00	$3.41
20610 Aspiration and/or injection of fluid from large joint	49	35	$145.00	$74.23
90674 Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free	46	46	$75.00	$33.49
G0008 Administration of influenza virus vaccine	46	46	$30.00	$30.07
93000 Routine ekg using at least 12 leads including interpretation and report	46	44	$50.00	$16.19
J1885 Injection, ketorolac tromethamine, per 15 mg	39	11	$5.00	$0.56
G0180 Physician or allowed practitioner 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 and	35	33	$200.00	$58.56
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	34	33	$250.00	$197.25
99442 Telephone medical discussion with physician, 11-20 minutes	33	27	$150.00	$99.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$275.00	$182.79
J1030 Injection, methylprednisolone acetate, 40 mg	16	12	$25.00	$7.43
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$250.00	$143.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99336 Established patient assisted living visit, typically 40 minutes	1,004	169	$300.00	$145.66
99213 Established patient office or other outpatient visit, typically 15 minutes	865	258	$150.00	$101.36
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	529	285	$193.48	$142.65
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	414	64	$10.00	$1.14
99335 Established patient assisted living visit, typically 25 minutes	334	161	$250.00	$102.96
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	232	30	$132.20	$70.09
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	198	81	$44.65	$16.24
99442 Telephone medical discussion with physician, 11-20 minutes	136	103	$150.00	$101.10
99328 New patient custodial care facility, group care, or assisted living visit, typically 75 minutes	129	129	$350.00	$233.20
90674 Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free	102	102	$75.00	$31.61
G0008 Administration of influenza virus vaccine	102	102	$30.00	$29.95
G0180 Physician or allowed practitioner 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 and	94	58	$200.00	$59.58
93000 Routine ekg using at least 12 leads including interpretation and report	73	65	$50.00	$16.09
J1885 Injection, ketorolac tromethamine, per 15 mg	71	21	$5.00	$0.54
20610 Aspiration and/or injection of fluid from large joint	63	45	$145.00	$73.14
99326 New patient assisted living visit, typically 45 minutes	57	57	$214.91	$148.70
81002 Urinalysis, manual test	55	34	$15.00	$3.43
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	45	40	$250.00	$200.45
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	39	34	$125.00	$62.30
J1030 Injection, methylprednisolone acetate, 40 mg	29	24	$25.00	$6.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$275.00	$185.39
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$300.00	$243.81
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	18	18	$250.00	$146.70
99327 New patient custodial care facility, group care, or assisted living visit, typically 1 hour	11	11	$400.00	$200.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	877	248	$148.46	$101.57
99336 Established patient assisted living visit, typically 40 minutes	489	81	$300.00	$146.24
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	481	259	$173.96	$143.46
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	351	41	$80.00	$45.13
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	221	41	$9.97	$1.27
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	159	68	$30.00	$15.94
G0008 Administration of influenza virus vaccine	108	108	$30.00	$19.24
90674 Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free	108	108	$75.00	$29.94
99442 Telephone medical discussion with physician, 11-20 minutes	102	71	$142.16	$101.56
99335 Established patient assisted living visit, typically 25 minutes	91	54	$250.00	$103.47
93000 Routine ekg using at least 12 leads including interpretation and report	78	69	$50.00	$16.61
81002 Urinalysis, manual test	63	41	$15.00	$3.48
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	51	43	$247.06	$199.15
J1885 Injection, ketorolac tromethamine, per 15 mg	42	19	$5.00	$0.46
G0180 Physician or allowed practitioner 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 and	34	26	$200.00	$59.15
20610 Aspiration and/or injection of fluid from large joint	33	25	$145.00	$71.81
99328 New patient custodial care facility, group care, or assisted living visit, typically 75 minutes	32	32	$350.00	$235.35
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	30	28	$123.33	$63.12
J0696 Injection, ceftriaxone sodium, per 250 mg	29	12	$60.00	$0.55
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	22	22	$250.00	$146.99
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$275.00	$185.10
J1030 Injection, methylprednisolone acetate, 40 mg	19	17	$25.00	$5.66
99443 Telephone medical discussion with physician, 21-30 minutes	14	12	$196.43	$144.04

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99336 Established patient assisted living visit, typically 40 minutes	1,104	126	$300.05	$147.25
99213 Established patient office or other outpatient visit, typically 15 minutes	892	275	$100.00	$83.54
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	484	49	$80.00	$45.85
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	364	235	$125.14	$120.64
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	359	56	$10.00	$1.50
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	256	92	$30.00	$15.96
99442 Telephone medical discussion with physician, 11-20 minutes	111	89	$94.59	$80.17
G0008 Administration of influenza virus vaccine	102	102	$30.00	$18.96
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	102	102	$50.00	$19.17
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	86	78	$75.00	$50.87
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	84	25	$175.00	$112.91
J1885 Injection, ketorolac tromethamine, per 15 mg	76	21	$5.00	$0.59
93000 Routine ekg using at least 12 leads including interpretation and report	72	62	$50.00	$18.99
99335 Established patient assisted living visit, typically 25 minutes	70	53	$244.29	$104.48
81002 Urinalysis, manual test	68	43	$15.00	$3.46
99334 Established patient custodial care facility, group care, or assisted living visit, typically 15 minutes	56	56	$100.00	$66.27
G0180 Physician or allowed practitioner 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 and	45	40	$200.00	$59.53
G0009 Administration of pneumococcal vaccine	38	37	$30.00	$18.96
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	38	37	$125.00	$119.92
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	36	34	$177.08	$157.82
G0180 Physician or allowed practitioner 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 and	32	28	$200.00	$59.17
J0696 Injection, ceftriaxone sodium, per 250 mg	31	15	$58.55	$0.58
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	21	11	$100.00	$75.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	18	$300.00	$214.31
99328 New patient custodial care facility, group care, or assisted living visit, typically 75 minutes	17	17	$350.00	$238.88
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$250.00	$128.73
99238 Hospital discharge day management, 30 minutes or less	14	13	$225.00	$79.65
20610 Aspiration and/or injection of fluid from large joint	14	12	$145.00	$69.19
J1030 Injection, methylprednisolone acetate, 40 mg	12	12	$25.00	$6.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,284	321	$100.00	$81.78
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	592	87	$10.00	$1.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	506	257	$125.00	$119.18
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	333	113	$30.00	$18.70
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	318	43	$80.00	$45.39
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	169	169	$50.00	$17.48
G0008 Administration of influenza virus vaccine	158	158	$30.00	$18.58
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	115	33	$175.00	$110.74
99336 Established patient assisted living visit, typically 40 minutes	109	100	$300.00	$145.28
99328 New patient custodial care facility, group care, or assisted living visit, typically 75 minutes	101	101	$349.50	$235.03
81002 Urinalysis, manual test	82	47	$15.00	$3.41
J1885 Injection, ketorolac tromethamine, per 15 mg	79	26	$5.00	$0.52
93000 Routine ekg using at least 12 leads including interpretation and report	69	62	$50.00	$18.96
J0696 Injection, ceftriaxone sodium, per 250 mg	50	22	$47.40	$0.58
G0180 Physician or allowed practitioner 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 and	49	45	$200.00	$58.75
20610 Aspiration and/or injection of fluid from large joint	45	32	$145.00	$65.13
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	35	34	$175.00	$155.74
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	34	29	$75.00	$50.18
G0180 Physician or allowed practitioner 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 and	33	33	$200.00	$58.71
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	29	29	$125.00	$111.49
G0009 Administration of pneumococcal vaccine	28	28	$30.00	$18.58
99238 Hospital discharge day management, 30 minutes or less	23	19	$225.00	$78.59
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	20	17	$300.00	$211.37
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	18	13	$15.00	$1.80
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$250.00	$127.90
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$300.00	$178.92
J1030 Injection, methylprednisolone acetate, 40 mg	13	12	$25.00	$6.36

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,254	322	$100.00	$75.81
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	567	74	$10.00	$1.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	473	250	$125.00	$111.40
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	254	87	$30.00	$21.95
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	170	28	$80.00	$43.46
99497 Advance care planning, first 30 minutes	165	164	$150.00	$86.28
G0008 Administration of influenza virus vaccine	158	158	$30.00	$23.13
90688 Vaccine for influenza for administration into muscle, 0.5 ml dosage	155	155	$50.00	$17.48
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	98	31	$175.00	$104.99
81002 Urinalysis, manual test	63	35	$15.00	$3.41
20610 Aspiration and/or injection of fluid from large joint	58	36	$145.00	$62.47
93000 Routine ekg using at least 12 leads including interpretation and report	55	51	$50.00	$17.85
J1885 Injection, ketorolac tromethamine, per 15 mg	54	16	$5.00	$0.56
99238 Hospital discharge day management, 30 minutes or less	39	26	$225.00	$74.34
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	38	38	$125.00	$105.59
G0009 Administration of pneumococcal vaccine	38	38	$30.00	$23.13
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	38	34	$300.00	$201.19
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	36	30	$75.00	$46.10
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	24	24	$175.00	$149.95
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$300.00	$170.91
J0696 Injection, ceftriaxone sodium, per 250 mg	20	12	$57.75	$0.61
G0180 Physician or allowed practitioner 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 and	20	18	$200.00	$56.03
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	13	13	$250.00	$121.52
J1030 Injection, methylprednisolone acetate, 40 mg	13	12	$25.00	$6.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,349	356	$100.00	$77.20
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	623	72	$80.00	$44.50
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	485	263	$125.00	$113.36
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	444	71	$10.00	$1.80
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	234	80	$30.01	$27.78
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	234	48	$175.00	$107.40
G0008 Administration of influenza virus vaccine	115	115	$30.00	$28.74
Q2037 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluvirin)	115	115	$50.00	$17.34
J1885 Injection, ketorolac tromethamine, per 15 mg	80	18	$5.00	$0.64
93000 Routine ekg using at least 12 leads including interpretation and report	62	60	$50.00	$18.19
81002 Urinalysis, manual test	60	43	$15.00	$3.43
20610 Aspiration and/or injection of fluid from large joint	54	36	$145.00	$64.56
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	52	52	$125.00	$96.87
G0009 Administration of pneumococcal vaccine	50	50	$30.00	$28.74
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	50	40	$300.00	$205.49
G0180 Physician or allowed practitioner 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 and	49	39	$200.00	$57.16
J0696 Injection, ceftriaxone sodium, per 250 mg	40	14	$52.13	$0.63
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	36	29	$75.00	$45.53
99238 Hospital discharge day management, 30 minutes or less	36	29	$225.00	$75.29
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$220.83	$173.33
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	21	21	$175.00	$152.25
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	18	12	$100.00	$71.81
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	13	13	$250.00	$122.10

Medical Specialties & State Licenses

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License CA G72353

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

00G723520 (CA)

Hospital & Practice Group Affiliations

Frischer Medical Group Inc

11480 Brookshire Ave, Downey, CA 902415021

Phone: 5628060874

Practice Associates & Co-Workers

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

3 Associated Practitioners

Dr. Laura Ryan , MD

Internal Medicine

NPI 1114344173

Doctor of Medicine (M.D.)

Nicole Salgado , NP

Nurse Practitioner - Family

NPI 1487480877

Nurse Practitioner

Dr. Alan Frischer , MD

Internal Medicine

NPI 1982701454

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active December 20, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location December 20, 2011

Registered at 11480 BROOKSHIRE AVE, 200, DOWNEY, CA 902419998 (Tel: 5628060874)

📍

Updated Business Mailing Address December 20, 2011

Registered at 11480 BROOKSHIRE AVE, 200, DOWNEY, CA 902419998 (Tel: 5628060874)

👤

Provider Name / Credentials Updated December 20, 2011

Recorded as WILLIAM SIM, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 20, 2011

Internal Medicine (License #G72353 in CA)

🟢

Initial NPI Registration & Enumeration September 19, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1437256906

Entity Type:

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

Enumeration Date: September 19, 2006

Last Update: December 20, 2011

Sole Proprietor: No

Update or Correct Profile

Mailing Address

11480 Brookshire Ave, 200

Downey, CA 902419998

Phone: 5628060874

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

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