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Internal Medicine - Gastroenterology Specialists in Chicago, IL

Browse 278 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Chicago, Illinois.

278 Healthcare Providers

How Chicago compares with the U.S.

Chicago has 10 clinicians in Internal Medicine - Gastroenterology per 100,000 residents, about 1.7 times the U.S. rate of 6.2.

That is 278 active clinicians in Internal Medicine - Gastroenterology with a practice address in Chicago, for a population of 2,711,226.

The Illinois rate is 7.0 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

96% of clinicians in Internal Medicine - Gastroenterology in Chicago listed in the CMS Medicare file (182 of 189) accept Medicare assignment. That is similar to the Illinois share of 96%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

52% of clinicians in Internal Medicine - Gastroenterology in Chicago listed in the CMS Medicare file (99 of 189) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Illinois share of 41%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine - Gastroenterology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Gastroenterology practitioners in Chicago, IL

Source: CMS PECOS
PECOS Enrolled Specialists 229 In Chicago, IL
Part B Lab & Imaging Eligible 231 Diagnostic Referrals
DME Ordering Eligible 241 Durable Medical Equipment
Home Health Agency Referrals 231 HHA Ordering Eligible
Showing 1โ€“20 of 278 providers
With recent CMS data first, then Aโ€“Z

Dr. Abdul Aziz Aadam , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
675 N Saint Clair St, Gastroenterology - Suite 1400, Chicago, IL 606115975
Phone: 3129262000
NPI Identifier 1013038744
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Dr. Rana Rose Abraham , MD, MS

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
820 S Wood St, Department Of Digestive Diseases And Nutrition, Chicago, IL 606124325
Phone: 3129966651
NPI Identifier 1437318516
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Dr. Ikechukwu B Achebe , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
259 E Erie St Ste 1600, Chicago, IL 606113111
Phone: 3126955620
NPI Identifier 1184182198
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Dr. Rohit Agrawal , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
1901 W Harrison Street, Chicago, IL 60612
Phone: 3128646000
NPI Identifier 1033631403
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Omar Tarek Ahmed , MBBCH

Internal Medicine - Gastroenterology

Active NPI Status
1801 W Taylor St, Chicago, IL 606124795
Phone: 3129967598
NPI Identifier 1578183935
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Dr. Andrew Albert , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
836 W Wellington Ave, Chicago, IL 606575147
Phone: 7733683164
NPI Identifier 1659413656
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Dr. Muhammed M Alikhan , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
1520 W Harrison St, Chicago, IL 606073106
Phone: 3125632782
NPI Identifier 1518427251
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Dr. Carl K Atallah , DO

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3000 N Halsted St Ste 623, Chicago, IL 606575196
Phone: 7732815818
NPI Identifier 1922269190
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Dr. David S Atlas , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
2315 E 93rd St Ste 440, Chicago, IL 606173951
Phone: 7083330001
NPI Identifier 1952375636
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Dr. Bashar Attar , MD

Internal Medicine - Gastroenterology

Active NPI Status
1901 W Harrison St, Chicago, IL 606123714
Phone: 3128647213
NPI Identifier 1790795664
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Dr. Malek Ayoub , MD

Internal Medicine - Gastroenterology

Active NPI Status
5841 S Maryland Ave # Mc4076, Chicago, IL 606371443
Phone: 7737951824
NPI Identifier 1609510981
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Dr. Saad Q Aziz , DO

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3740 W North Ave, Chicago, IL 606474727
Phone: 6308899889
NPI Identifier 1629259890
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Dr. Purnima V Balachandran , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
820 S Damen Ave, Chicago, IL 606123728
Phone: 3125698387
NPI Identifier 1659318509
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Dr. Alexandra Baumann , DO

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
259 E Erie St Fl 16, Chicago, IL 606112987
Phone: 3126955620
NPI Identifier 1124380332
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Dr. Emanuelle A L Bellaguarda , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
680 N Lake Shore Dr Ste 1000, Chicago, IL 606118709
Phone: 3126950838
NPI Identifier 1699919324
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Richard V. Benya

Internal Medicine - Gastroenterology

Active NPI Status
1740 W Taylor St, Chicago, IL 606127232
Phone: 8666002273
NPI Identifier 1568567998
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Dr. Daniel Berger , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3000 N Halsted St Ste 625, Chicago, IL 606575196
Phone: 7732815818
NPI Identifier 1073950390
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Dr. Mary Biglin , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
840 S Wood St, Chicago, IL 606124325
Phone: 3129966651
NPI Identifier 1053840991
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Dr. Wojciech Blogowski , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1725 W Harrison St Ste 207, Chicago, IL 606123988
Phone: 3129425861
NPI Identifier 1568927226
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Dr. Richard Bone , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
9831 S Western Ave, Chicago, IL 606431791
Phone: 7734453500
NPI Identifier 1407887938
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Frequently Asked Questions about Internal Medicine - Gastroenterology in Chicago

How do I check a Internal Medicine - Gastroenterology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Illinois licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.