Active NPI 1326056136 Individual Practitioner Male Practitioner

Dr. Gerald Jay Osher , MD

Internal Medicine • Bannockburn, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gerald Osher, MD is a certified Internal Medicine practicing in Bannockburn, IL. With approximately 46 years of clinical experience since graduating from University Of Michigan Medical School in 1980, Dr. Osher delivers high-quality medical care to the local community at 2101 WAUKEGAN RD STE 200.

Dr. Osher is affiliated with Brent M Nathan Md Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include routine electrocardiogram (ecg) using at least 12 leads with tracing, sarscv2 vac 30mcg trs-suc im, 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

2101 Waukegan Rd Ste 200

Bannockburn, IL 600151800

Telephone 8473171717

Fax 8473179305

Associated Practice Facility / Clinic

🏢 Brent M Nathan Md Pllc Facility NPI 1831083088

Medicare Profile & Education

Medical School

University Of Michigan Medical School

Graduation Year

1980

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Bannockburn, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

46 Yrs +23.2 yrs vs City Avg

City Avg: 22.8 Yrs

State Avg: 28.9 Yrs

Regional Practice Density

8 Specialists

Practicing in Bannockburn, IL (7544 Statewide)

Telehealth Adoption Rate

25.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

16.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Osher (46 Years) 46 Yrs

Bannockburn Specialty Average (22.8 Years) 22.8 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
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	165	154	$11.00	$6.69
91320 Sarscv2 vac 30mcg trs-suc im	154	135	$135.00	$131.33
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	145	94	$120.00	$118.25
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	119	117	$9.00	$8.18
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	86	86	$251.00	$132.93
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	69	53	$180.00	$177.32
90471 Administration of 1 vaccine	49	46	$23.00	$21.23
99213 Established patient office or other outpatient visit, typically 15 minutes	39	34	$90.00	$88.71

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	183	120	$120.00	$118.20
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	180	165	$11.00	$6.84
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	137	132	$9.00	$8.33
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	127	127	$251.00	$133.37
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	58	47	$180.00	$177.30
91320 Sarscv2 vac 30mcg trs-suc im	52	52	$135.00	$128.48
99213 Established patient office or other outpatient visit, typically 15 minutes	50	41	$90.00	$88.65
91312 Coronavirus vaccine 13	41	41	$0.01	$0.01
0124A Fee covid-19 vac 13 res	39	39	$40.00	$39.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
90662 Influenza vaccine split virus, preservative free	212	210	$18.00	$17.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	181	114	$120.00	$120.37
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	168	168	$251.00	$139.34
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	134	134	$9.00	$8.65
0124A Fee covid-19 vac 13 res	124	124	$40.00	$39.20
91312 Coronavirus vaccine 13	123	123	$0.01	$0.01
91306 Sarscov2 vac 50mcg/0.25ml im	100	97	$0.01	$0.01
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	88	87	$11.00	$6.79
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	80	61	$180.00	$180.80
G0008 Administration of influenza virus vaccine	79	79	$16.00	$15.70
0013A Adm sarscov2 100mcg/0.5ml3rd	77	73	$40.00	$39.55
91300 Sarscov2 vac 30mcg/0.3ml im	74	73	$0.01	$0.01
0003A Adm sarscov2 30mcg/0.3ml 3rd	61	60	$40.00	$39.64
0064A Adm sarscov2 50mcg/0.25mlbst	46	45	$60.00	$41.35
99213 Established patient office or other outpatient visit, typically 15 minutes	39	37	$90.00	$90.20
91309 Sarscov2 vac 50mcg/0.5ml im	33	33	$0.01	$0.01
0094A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 50 mcg/0.5 ml dosage, booster dose	30	30	$40.00	$39.20
91313 Coronavirus vaccine 14	22	22	$0.01	$0.01
91301 Sarscov2 vac 100mcg/0.5ml im	22	22	$0.01	$0.01
0134A Fee covid-19 vac 14 res	21	21	$40.00	$39.20
93000 Routine ekg using at least 12 leads including interpretation and report	11	11	$17.13	$15.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
90662 Influenza vaccine split virus, preservative free	174	174	$18.00	$18.00
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	167	167	$251.00	$142.25
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	167	114	$120.00	$120.07
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	166	156	$11.00	$7.26
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	158	149	$9.00	$8.80
91301 Sarscov2 vac 100mcg/0.5ml im	134	131	$0.01	$0.01
0012A Adm sarscov2 100mcg/0.5ml2nd	117	116	$40.00	$40.00
91300 Sarscov2 vac 30mcg/0.3ml im	102	101	$0.01	$0.01
0002A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; second dose	94	94	$60.00	$42.14
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	72	53	$180.00	$181.94
99213 Established patient office or other outpatient visit, typically 15 minutes	33	32	$90.00	$90.84
0013A Adm sarscov2 100mcg/0.5ml3rd	20	20	$40.00	$40.00
0003A Adm sarscov2 30mcg/0.3ml 3rd	18	17	$40.00	$40.00
87637 Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus	11	11	$150.00	$142.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
G0008 Administration of influenza virus vaccine	188	186	$15.85	$15.85
90662 Influenza vaccine split virus, preservative free	183	183	$18.00	$18.00
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	166	166	$251.00	$124.40
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	165	159	$11.00	$9.41
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	140	134	$9.00	$9.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	128	90	$120.00	$116.93
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	58	48	$180.00	$156.79
99213 Established patient office or other outpatient visit, typically 15 minutes	43	35	$90.00	$80.59
G0009 Administration of pneumococcal vaccine	28	28	$15.00	$14.93
81003 Automated urinalysis test	27	25	$2.49	$2.24
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	26	26	$117.15	$110.77
93000 Routine ekg using at least 12 leads including interpretation and report	12	12	$17.13	$17.30

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	184	127	$120.00	$113.38
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	182	173	$11.00	$9.17
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	176	176	$251.00	$121.46
G0008 Administration of influenza virus vaccine	157	153	$9.00	$8.82
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	157	151	$9.00	$8.89
90653 Vaccine for influenza for injection into muscle	131	131	$35.90	$35.18
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	87	67	$180.00	$151.24
99213 Established patient office or other outpatient visit, typically 15 minutes	62	50	$90.00	$77.93
G0009 Administration of pneumococcal vaccine	62	62	$15.00	$14.70
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	56	56	$87.70	$85.95
82270 Stool analysis for blood to screen for colon tumors	39	39	$5.00	$4.29

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	215	136	$120.00	$109.23
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	176	168	$11.00	$8.89
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	175	167	$9.00	$8.62
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	158	158	$251.00	$118.77
90662 Influenza vaccine split virus, preservative free	111	108	$18.00	$17.64
G0008 Administration of influenza virus vaccine	110	107	$9.00	$8.82
99213 Established patient office or other outpatient visit, typically 15 minutes	79	65	$90.00	$74.47
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	63	47	$180.00	$147.88
82270 Stool analysis for blood to screen for colon tumors	60	60	$5.00	$4.29
G0009 Administration of pneumococcal vaccine	26	26	$15.00	$14.70
90471 Administration of 1 vaccine	24	16	$30.00	$20.90
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	19	19	$87.70	$85.95
81003 Automated urinalysis test	11	11	$2.49	$2.44
36415 Insertion of needle into vein for collection of blood sample	11	11	$30.00	$2.94

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	233	131	$120.26	$109.30
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	180	174	$11.00	$8.88
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	177	171	$9.00	$8.62
G0008 Administration of influenza virus vaccine	168	163	$9.00	$8.82
90662 Influenza vaccine split virus, preservative free	167	162	$18.00	$17.64
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	148	148	$251.00	$117.67
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	84	65	$180.00	$147.28
99213 Established patient office or other outpatient visit, typically 15 minutes	73	58	$90.00	$74.39
82270 Stool analysis for blood to screen for colon tumors	21	21	$5.00	$4.37
G0009 Administration of pneumococcal vaccine	15	15	$15.00	$14.70
36415 Insertion of needle into vein for collection of blood sample	14	14	$30.00	$2.94
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$87.70	$85.95
81003 Automated urinalysis test	12	12	$2.49	$2.44

Medical Specialties & State Licenses

CMS Verified: 2025-12-19

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License IL 036066116

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.

Hospital & Practice Group Affiliations

Brent M Nathan Md Pllc

2101 Waukegan Rd, Bannockburn, IL 600151836

Phone: 8473171717

Practice Associates & Co-Workers

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

4 Associated Practitioners

Linda Bliwas , LCSW

Social Worker - Clinical

NPI 1366519647

Licensed Clinical Social Worker

Dr. Sabrina Jones , MD

Internal Medicine

NPI 1518371889

Doctor of Medicine (M.D.)

Dr. Brent Nathan , MD

Internal Medicine

NPI 1639559719

Doctor of Medicine (M.D.)

Hannah Leavitt , DNP-C

Nurse Practitioner - Primary Care

NPI 1962866749

DNPC

Career & Practice History Timeline

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

10 Historical Events

📍

Updated Practice Location December 19, 2025

Registered at 2101 WAUKEGAN RD STE 200, BANNOCKBURN, IL 600151800 (Tel: 8473171717)

📍

Updated Business Mailing Address December 19, 2025

Registered at 2101 WAUKEGAN RD STE 200, BANNOCKBURN, IL 600151800 (Tel: 8477101246)

📍

Updated Practice Location February 15, 2023

Registered at 2101 WAUKEGAN RD STE 104, BANNOCKBURN, IL 600151836 (Tel: 8473171717)

📍

Updated Business Mailing Address February 15, 2023

Registered at 2101 WAUKEGAN RD STE 104, BANNOCKBURN, IL 600151836 (Tel: 8477101246)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 2151 WAUKEGAN RD, SUITE 160, BANNOCKBURN, IL 600151885 (Tel: 8473171717)

📍

Updated Business Mailing Address July 08, 2007

Registered at 1845 SUNSET RIDGE RD, NORTHBROOK, IL 600625599 (Tel: 8477539387)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as GERALD OSHER, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine (License #036066116 in IL)

🟢

Initial NPI Registration & Enumeration August 04, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1326056136

Entity Type:

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

Enumeration Date: August 04, 2006

Last Update: December 19, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

2101 Waukegan Rd Ste 200

Bannockburn, IL 600151800

Phone: 8477101246

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.