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Internal Medicine - Gastroenterology Specialists in Providence, RI

Browse 44 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Providence, Rhode Island.

44 Healthcare Providers

How Providence compares with the U.S.

Providence has 23 clinicians in Internal Medicine - Gastroenterology per 100,000 residents, 3.7 times the U.S. rate of 6.2.

That is 44 active clinicians in Internal Medicine - Gastroenterology with a practice address in Providence, for a population of 191,767.

The Rhode Island rate is 8.7 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.

100% of clinicians in Internal Medicine - Gastroenterology in Providence listed in the CMS Medicare file (31 of 31) accept Medicare assignment. That is similar to the Rhode Island share of 100%.

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.

45% of clinicians in Internal Medicine - Gastroenterology in Providence listed in the CMS Medicare file (14 of 31) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Rhode Island share of 24%.

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 Providence, RI

Source: CMS PECOS
PECOS Enrolled Specialists 36 In Providence, RI
Part B Lab & Imaging Eligible 36 Diagnostic Referrals
DME Ordering Eligible 36 Durable Medical Equipment
Home Health Agency Referrals 36 HHA Ordering Eligible
Showing 1โ€“20 of 44 providers
With recent CMS data first, then Aโ€“Z

Dr. Alyn Louise Adrain , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
44 W River St, Providence, RI 029042609
Phone: 4012744800
NPI Identifier 1225027766
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Dr. Mahmoud Ahmed Rahal , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
825 Chalkstone Ave, Providence, RI 029084728
Phone: 4014562000
NPI Identifier 1104346733
View Full Profile

Dr. Paul A. Akerman , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
33 Staniford St, Providence, RI 029053105
Phone: 4014218800
NPI Identifier 1942302773
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Dr. William T. Chen , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
33 Staniford Street, Providence, RI 02905
Phone: 4014218800
NPI Identifier 1467546051
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Dr. Christy Dibble , MD

Internal Medicine - Gastroenterology

Active NPI Status
100 Dudley St Fl 3, Providence, RI 029053233
Phone: 4014537953
NPI Identifier 1043240062
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Dr. Valley C Dreisbach , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
44 W River St, Providence, RI 029042609
Phone: 4012744800
NPI Identifier 1629250527
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Dr. Alan Epstein , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
50 Maude St, Providence, RI 029084325
Phone: 4014562309
NPI Identifier 1831157908
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Dr. Mariam Fayek , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
101 Dudley Street, 3rd Floor, Providence, RI 02905
Phone: 2157625181
NPI Identifier 1316997588
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Dr. Jason Ferreira , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
148 W River St Ste 3, Providence, RI 029042615
Phone: 4014216306
NPI Identifier 1194952929
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Dr. Tian Gao , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
44 W River St, Providence, RI 029042609
Phone: 4012744800
NPI Identifier 1306073846
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Dr. Neil Robert Greenspan , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
44 W River St, Providence, RI 029042609
Phone: 4012744800
NPI Identifier 1023007556
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Dr. Daniel Greenwald , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
44 W River St, Providence, RI 029042609
Phone: 4012744800
NPI Identifier 1578902417
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Dr. Alexander J Harmatz , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
825 Chalkstone Ave, Providence, RI 029084728
Phone: 4014566510
NPI Identifier 1730142696
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Dr. Autumn Paige Hines , DO

Internal Medicine - Gastroenterology

Active NPI Status
101 Dudley St, Providence, RI 029052401
Phone: 4012741122
NPI Identifier 1932495249
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Dr. Brett David Kalmowitz , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
44 W River St, Providence, RI 029042609
Phone: 4012744800
NPI Identifier 1700817269
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Dr. Sheldon Lidofsky , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
33 Staniford St, Providence, RI 029053105
Phone: 4014218800
NPI Identifier 1447336904
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Dr. Peter Scott Margolis , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
33 Staniford St, Providence, RI 029053105
Phone: 4014218800
NPI Identifier 1659457133
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Dr. Philip Mcandrew , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
148 W River St, Suite 3, Providence, RI 029042615
Phone: 4014216306
NPI Identifier 1376614966
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Dr. Lisa A. Mueller , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
33 Staniford St, Providence, RI 029053105
Phone: 4014218800
NPI Identifier 1063583383
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Dr. Jeffrey Nadelson , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
33 Staniford St Fl 1, Providence, RI 02905
Phone: 9782890745
NPI Identifier 1619263399
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Frequently Asked Questions about Internal Medicine - Gastroenterology in Providence

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 Rhode Island 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.