Active NPI 1861450330 Individual Practitioner Male Practitioner

Dr. Gerald Simon , MD

Internal Medicine • Countryside, IL

Professional Overview & Biography Verified Profile Summary

Dr. Gerald Simon, MD is a certified Internal Medicine practicing in Countryside, IL. With approximately 44 years of clinical experience since graduating from Loyola University Of Chicago, Stritch School Of Medicine in 1982, Dr. Simon delivers high-quality medical care to the local community at 6438 JOLIET RD STE 203.

Dr. Simon is affiliated with Nani Internal Med Llc and does not directly accept Medicare assignment.

Frequently performed procedures and clinical services include chronic care management services, first, subsequent hospital care with moderate levelof medical decision making, if using time, at least, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

6438 Joliet Rd Ste 203

Countryside, IL 605254624

Telephone 7083525222

Fax 7083521576

Associated Practice Facility / Clinic

🏢 Nani Internal Med Llc Facility NPI 1740765700

Medicare Profile & Education

Medical School

Loyola University Of Chicago, Stritch School Of Medicine

Graduation Year

1982

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Countryside, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

44 Yrs Matches City Avg

City Avg: 44.0 Yrs

State Avg: 28.9 Yrs

Regional Practice Density

3 Specialists

Practicing in Countryside, IL (7544 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

53.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Simon (44 Years) 44 Yrs

Countryside Specialty Average (44.0 Years) 44.0 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
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	1,326	161	$131.28	$61.35
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,280	188	$166.66	$76.50
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	672	345	$269.07	$125.48
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	328	213	$31.92	$15.94
99239 Hospital discharge day management, more than 30 minutes	309	193	$236.95	$110.80
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	305	192	$279.90	$127.77
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	281	92	$156.50	$72.25
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	183	183	$277.02	$126.44
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	127	37	$216.25	$104.50
99213 Established patient office or other outpatient visit, typically 15 minutes	118	100	$189.86	$88.53
90662 Influenza vaccine split virus, preservative free	55	55	$150.81	$81.57
G0008 Administration of influenza virus vaccine	55	55	$66.50	$33.57
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	50	17	$29.69	$13.93
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	46	25	$158.10	$72.27
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	31	31	$351.95	$165.15
99238 Hospital discharge day management, 30 minutes or less	27	27	$171.68	$78.77
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	18	15	$282.91	$129.45
81002 Urinalysis, manual test	17	16	$6.96	$3.41
93000 Routine ekg using at least 12 leads including interpretation and report	14	13	$30.80	$14.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	1,682	218	$127.75	$61.81
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,413	217	$149.00	$77.99
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	680	322	$270.66	$126.49
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	356	119	$83.00	$73.30
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	342	230	$286.00	$129.09
99239 Hospital discharge day management, more than 30 minutes	326	216	$153.00	$113.24
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	264	264	$356.91	$126.93
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	129	50	$116.00	$104.87
G0008 Administration of influenza virus vaccine	76	76	$36.09	$32.32
90662 Influenza vaccine split virus, preservative free	76	76	$140.81	$71.79
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	51	14	$32.78	$13.96
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	48	35	$119.39	$51.42
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	35	35	$310.83	$165.94
J3420 Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg	29	13	$18.34	$1.48
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month	28	26	$79.70	$46.43
81002 Urinalysis, manual test	22	21	$9.15	$3.41
99213 Established patient office or other outpatient visit, typically 15 minutes	17	17	$191.49	$89.79
99305 Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes	15	15	$283.00	$132.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	2,077	301	$121.57	$63.14
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,694	221	$149.00	$70.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	665	323	$292.00	$128.00
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	388	110	$83.00	$68.07
99238 Hospital discharge day management, 30 minutes or less	273	181	$112.00	$71.35
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	267	184	$419.00	$196.82
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	262	71	$116.00	$90.04
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	251	251	$375.00	$130.46
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	107	86	$286.00	$134.17
99239 Hospital discharge day management, more than 30 minutes	102	84	$153.00	$103.22
90662 Influenza vaccine split virus, preservative free	95	94	$183.00	$68.47
G0008 Administration of influenza virus vaccine	94	93	$46.00	$31.04
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	69	53	$120.00	$53.10
99213 Established patient office or other outpatient visit, typically 15 minutes	66	56	$206.00	$90.75
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	62	18	$45.00	$14.34
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month	43	36	$77.09	$48.19
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	26	26	$220.00	$168.40
81002 Urinalysis, manual test	19	18	$15.00	$3.44
99306 Initial nursing facility visit, typically 45 minutes per day	12	11	$364.00	$164.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	2,611	357	$51.65	$41.51
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,448	236	$149.00	$72.33
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	671	338	$245.32	$131.79
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	455	105	$83.00	$69.73
J0897 Injection, denosumab, 1 mg	429	13	$55.00	$19.69
99238 Hospital discharge day management, 30 minutes or less	353	251	$112.00	$72.66
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	328	221	$419.00	$201.64
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	249	249	$375.00	$134.64
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	244	80	$116.00	$91.73
90662 Influenza vaccine split virus, preservative free	125	125	$183.00	$65.12
G0008 Administration of influenza virus vaccine	125	125	$46.00	$17.94
99213 Established patient office or other outpatient visit, typically 15 minutes	79	67	$175.62	$91.26
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	76	26	$45.00	$14.35
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	68	62	$362.15	$184.79
99442 Telephone medical discussion with physician, 11-20 minutes	65	47	$116.17	$80.04
99231 Follow-up hospital inpatient care per day, typically 15 minutes	59	15	$81.00	$38.45
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	37	35	$120.00	$53.69
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month	26	16	$120.00	$38.11
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	23	23	$279.00	$227.58
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$220.00	$171.37
81002 Urinalysis, manual test	17	12	$15.00	$3.48
99306 Initial nursing facility visit, typically 45 minutes per day	15	14	$337.33	$167.80
69210 Removal of impacted ear wax	12	12	$159.00	$49.51
81003 Automated urinalysis test	11	11	$12.00	$2.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month	1,390	361	$150.00	$42.52
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	1,214	217	$149.00	$72.79
J0897 Injection, denosumab, 1 mg	1,082	14	$55.00	$18.44
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	777	363	$133.00	$110.30
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	492	119	$83.00	$70.05
99213 Established patient office or other outpatient visit, typically 15 minutes	413	245	$86.00	$75.61
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	289	214	$419.00	$204.73
99238 Hospital discharge day management, 30 minutes or less	285	213	$112.00	$73.52
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	223	223	$375.00	$116.28
G0008 Administration of influenza virus vaccine	166	165	$46.00	$17.67
90662 Influenza vaccine split virus, preservative free	142	141	$182.81	$60.81
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	127	84	$116.00	$91.61
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	59	27	$45.00	$14.34
99442 Telephone medical discussion with physician, 11-20 minutes	57	53	$84.00	$75.40
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	46	41	$61.00	$42.23
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	42	37	$42.00	$21.09
99231 Follow-up hospital inpatient care per day, typically 15 minutes	37	17	$81.00	$39.84
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	31	25	$120.00	$53.85
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$220.00	$167.67
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	20	20	$60.00	$19.53
99306 Initial nursing facility visit, typically 45 minutes per day	19	18	$164.00	$162.90
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	18	$193.00	$141.20
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	$279.00	$212.67
G0009 Administration of pneumococcal vaccine	17	17	$25.00	$17.54
G2058 Chronic care management services, each additional 20 minutes of clinical staff time directed by a physician or other qualified health care professional, per calendar month (list separately in addition to code for primary procedure). (do not report g2058 fo	16	13	$108.00	$37.72
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	11	11	$45.00	$44.51

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,621	18	$55.00	$17.71
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	985	203	$149.00	$73.43
99213 Established patient office or other outpatient visit, typically 15 minutes	576	320	$86.00	$74.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	553	325	$133.00	$109.12
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	283	118	$213.00	$105.04
99238 Hospital discharge day management, 30 minutes or less	252	199	$112.00	$73.51
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	252	98	$83.00	$69.02
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	234	234	$375.00	$117.14
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	197	162	$419.00	$203.56
G0008 Administration of influenza virus vaccine	145	145	$46.00	$16.52
90662 Influenza vaccine split virus, preservative free	116	116	$169.83	$54.89
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	110	78	$116.00	$92.54
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	74	26	$45.00	$16.75
99231 Follow-up hospital inpatient care per day, typically 15 minutes	41	14	$81.00	$40.00
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	34	34	$220.00	$167.11
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	31	26	$120.00	$53.72
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	17	$286.00	$138.80
81003 Automated urinalysis test	18	17	$12.00	$2.44
Q2035 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (afluria)	15	15	$24.00	$17.88
Q2038 Influenza virus vaccine, split virus, when administered to individuals 3 years of age and older, for intramuscular use (fluzone)	13	13	$25.15	$24.65
81002 Urinalysis, manual test	13	11	$15.00	$3.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J0897 Injection, denosumab, 1 mg	1,200	14	$20.00	$17.96
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	1,166	229	$227.00	$105.89
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	705	399	$234.80	$111.80
99213 Established patient office or other outpatient visit, typically 15 minutes	548	328	$160.00	$76.04
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	406	129	$158.00	$75.49
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	309	309	$247.00	$121.69
85610 Blood test, clotting time	211	33	$30.00	$4.75
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	190	83	$145.77	$69.88
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	173	90	$194.15	$94.54
99238 Hospital discharge day management, 30 minutes or less	158	131	$158.00	$76.70
G0008 Administration of influenza virus vaccine	156	152	$47.00	$21.46
99495 Transitional care management services for problem of at least moderate complexity	76	67	$272.00	$170.05
90674 Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free	67	67	$41.00	$23.57
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	64	23	$52.00	$22.59
99231 Follow-up hospital inpatient care per day, typically 15 minutes	60	31	$105.00	$38.08
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	59	55	$97.00	$46.25
G0009 Administration of pneumococcal vaccine	44	44	$47.00	$21.46
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	34	19	$55.00	$21.49
81003 Automated urinalysis test	33	29	$21.00	$2.71
90670 Pneumococcal vaccine for injection into muscle	28	28	$222.00	$195.34
90656 Vaccine for influenza for administration into muscle, 0.5 ml dosage	27	27	$40.00	$19.18
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	25	25	$41.00	$18.65
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	24	24	$368.00	$175.05
99496 Transitional care management services for problem of high complexity	23	23	$383.00	$233.46
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	22	22	$447.00	$213.92
99225 Subsequent observation care, typically 25 minutes per day	18	14	$158.00	$76.68
90662 Influenza vaccine split virus, preservative free	18	18	$70.00	$52.30
93000 Routine ekg using at least 12 leads including interpretation and report	17	17	$97.00	$18.06
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	15	15	$98.00	$96.04
90653 Vaccine for influenza for injection into muscle	15	15	$100.00	$53.58
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$350.00	$174.46

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	1,275	299	$227.00	$108.01
J0897 Injection, denosumab, 1 mg	900	11	$20.00	$16.66
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	716	395	$235.19	$112.23
99213 Established patient office or other outpatient visit, typically 15 minutes	583	331	$160.00	$76.35
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	399	148	$196.00	$92.36
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	297	297	$247.00	$120.66
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	211	200	$97.00	$45.90
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes	200	79	$150.00	$68.55
85610 Blood test, clotting time	193	35	$30.00	$5.28
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	165	71	$158.00	$73.66
G0008 Administration of influenza virus vaccine	152	146	$47.00	$26.65
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	141	30	$52.00	$21.06
90656 Vaccine for influenza for administration into muscle, 0.5 ml dosage	106	103	$40.00	$18.76
99238 Hospital discharge day management, 30 minutes or less	67	59	$158.00	$74.32
99495 Transitional care management services for problem of at least moderate complexity	48	43	$272.00	$171.14
G0009 Administration of pneumococcal vaccine	45	45	$47.00	$26.65
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention	40	16	$55.00	$26.68
90662 Influenza vaccine split virus, preservative free	38	37	$46.00	$45.00
90670 Pneumococcal vaccine for injection into muscle	33	33	$222.00	$187.41
81003 Automated urinalysis test	24	21	$21.00	$3.02
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$368.00	$174.19
93000 Routine ekg using at least 12 leads including interpretation and report	18	18	$97.00	$17.08
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	17	15	$421.12	$215.65
96401 Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle	15	11	$153.00	$71.50
99497 Advance care planning, first 30 minutes	15	15	$193.00	$85.77
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$98.00	$95.38
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment	11	11	$350.00	$173.86

Medical Specialties & State Licenses

CMS Verified: 2023-02-01

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License IL 036066840

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.

Internal Medicine - Geriatric Medicine

NUCC Taxonomy Code: 207RG0300X

State License IL 36066840

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

Hospital & Practice Group Affiliations

Nani Internal Med Llc

412 63rd St, Downers Grove, IL 605162000

Phone: 3317752783

Secondary Practice Locations

412 63rd St, Ste 100

Downers Grove, IL 605162000

Phone: 6307195470

Practice Associates & Co-Workers

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

2 Associated Practitioners

Dr. Wayne Mathy , MD

Internal Medicine

NPI 1164470423

Doctor of Medicine (M.D.)

Jacqueline Celmer , FNP

Nurse Practitioner - Family

NPI 1811245178

Family Nurse Practitioner

Career & Practice History Timeline

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

10 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 01, 2023

Internal Medicine (License #36066840 in IL)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 31, 2022

Internal Medicine (License #036066840 in IL)

📍

Updated Practice Location November 06, 2020

Registered at 6438 JOLIET RD STE 203, COUNTRYSIDE, IL 605254624 (Tel: 7083525222)

📍

Updated Business Mailing Address November 06, 2020

Registered at 120 W 22ND ST STE 200, OAK BROOK, IL 605231563 (Tel: 6305755000)

✅

NPI Profile Active September 23, 2014

NPI status registered as active in NPPES database

📍

Updated Practice Location September 23, 2014

Registered at 412 63RD ST, STE 100, DOWNERS GROVE, IL 605162000 (Tel: 6307195470)

📍

Updated Business Mailing Address September 23, 2014

Registered at 412 63RD ST, STE 100, DOWNERS GROVE, IL 605162000 (Tel: 6307195470)

👤

Provider Name / Credentials Updated September 23, 2014

Recorded as GERALD SIMON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 23, 2014

Internal Medicine (License #36066840 in IL)

🟢

Initial NPI Registration & Enumeration May 03, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1861450330

Entity Type:

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

Enumeration Date: May 03, 2006

Last Update: February 01, 2023

Sole Proprietor: No

Update or Correct Profile

Mailing Address

120 W 22nd St Ste 200

Oak Brook, IL 605231563

Phone: 6305735000

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.