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Internal Medicine - Gastroenterology Specialists in Oak Park, IL

Browse 5 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Oak Park, Illinois.

5 Healthcare Providers

How Oak Park compares with the U.S.

5 active clinicians in Internal Medicine - Gastroenterology list a practice address in Oak Park, IL in the NPI registry.

With fewer than 10 clinicians, rates per 100,000 residents are not reliable enough to compare.

Too few clinicians in Internal Medicine - Gastroenterology in Oak Park are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.

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 Registry addresses can be out of date.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.

Showing 1โ€“5 of 5 providers
With recent CMS data first, then Aโ€“Z

Dr. Ilysa R Diamond , DO

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
1010 Lake St Ste 424, Oak Park, IL 603011185
Phone: 7086134417
NPI Identifier 1356596332
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Dr. Kamran Heydarpour , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
1 Erie Ct, Suite Number 3200, Oak Park, IL 603022566
Phone: 7087638248
NPI Identifier 1093764193
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Dr. Daniel M. Kruss , MD

Internal Medicine - Gastroenterology

Active NPI Status
520 S Maple Ave, Oak Park, IL 603041022
Phone: 8474050068
NPI Identifier 1538126396
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Dr. Shubha Singh , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1100 Lake St Ste 150, Oak Park, IL 603011066
Phone: 3312219003
NPI Identifier 1538397617
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Dr. Gayle M Rosenthal , MD

Internal Medicine - Gastroenterology

Active NPI Status
1100 Lake St, Oak Park, IL 60301
Phone: 7085241420
NPI Identifier 1982627840
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Frequently Asked Questions about Internal Medicine - Gastroenterology in Oak Park

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.