Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Internal Medicine - Gastroenterology Specialists in Phoenix, AZ

Browse 70 Internal Medicine - Gastroenterology providers listed in NPPES with a practice address in Phoenix, Arizona.

70 Healthcare Providers

How Phoenix compares with the U.S.

Phoenix has 4.3 clinicians in Internal Medicine - Gastroenterology per 100,000 residents, about 69% of the U.S. rate of 6.2.

That is 70 active clinicians in Internal Medicine - Gastroenterology with a practice address in Phoenix, for a population of 1,642,323.

The Arizona rate is 5.5 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.

100% of clinicians in Internal Medicine - Gastroenterology in Phoenix listed in the CMS Medicare file (49 of 49) accept Medicare assignment. That is similar to the Arizona share of 98%.

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.

55% of clinicians in Internal Medicine - Gastroenterology in Phoenix listed in the CMS Medicare file (27 of 49) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Arizona share of 49%.

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 Phoenix, AZ

Source: CMS PECOS
PECOS Enrolled Specialists 54 In Phoenix, AZ
Part B Lab & Imaging Eligible 54 Diagnostic Referrals
DME Ordering Eligible 55 Durable Medical Equipment
Home Health Agency Referrals 54 HHA Ordering Eligible
Showing 1โ€“20 of 70 providers
With recent CMS data first, then Aโ€“Z

Dr. Shahab Aftahi , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
500 W Thomas Rd Ste 100, Phoenix, AZ 850134255
Phone: 6024061510
NPI Identifier 1881656783
View Full Profile

Dr. Shifat Ahmed , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
625 N 6th St, Phoenix, AZ 850042155
Phone: 6023445011
NPI Identifier 1568881472
View Full Profile

Dr. Aws Muthanna Alameri , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
1441 N 12th St Fl 2, Phoenix, AZ 850062837
Phone: 6025215180
NPI Identifier 1114423381
View Full Profile

Dr. Layth Al-Jashaami , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
500 W Thomas Rd Ste 100, Phoenix, AZ 850134255
Phone: 6024061510
NPI Identifier 1255691895
View Full Profile

Dr. Bassel Al-Lahham , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
19636 N 27th Ave Ste 408, Phoenix, AZ 85027
Phone: 6027800100
NPI Identifier 1619081577
View Full Profile

Dr. Lynna Alnimer , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1441 N 12th St Fl 2, Phoenix, AZ 850062837
Phone: 6025215180
NPI Identifier 1215490461
View Full Profile

Dr. Shreya Samir Amin , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
19636 N 27th Ave Ste 408, Phoenix, AZ 850274021
Phone: 6237800100
NPI Identifier 1336683473
View Full Profile

Dr. Radhika Babaria , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2222 E Highland Ave Ste 203, Phoenix, AZ 850164876
Phone: 6022545321
NPI Identifier 1811421613
View Full Profile

Dr. Paul J Berggreen , MD

Internal Medicine - Gastroenterology

Active NPI Status
1300 N 12th St, #613, Phoenix, AZ 850062848
Phone: 6022545321
NPI Identifier 1093703605
View Full Profile

Dr. Krishdeep Chadha , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
9305 W Thomas Rd, Suite 478, Phoenix, AZ 850373328
Phone: 6232368507
NPI Identifier 1619147915
View Full Profile

Dr. Ericka Charley , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
2601 E Roosevelt St, Phoenix, AZ 850084973
Phone: 6023445011
NPI Identifier 1245763010
View Full Profile

Dr. Tyler Austin Cobbs , DO

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
1111 E Mcdowell Rd, Phoenix, AZ 850062612
Phone: 6028392000
NPI Identifier 1588123350
View Full Profile

Dr. Elizabeth Cruz , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment
500 W Thomas Rd Ste 100, Phoenix, AZ 850134255
Phone: 6024061510
NPI Identifier 1891749313
View Full Profile

Dr. Joseph David , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1300 N 12th St, Suite 613, Phoenix, AZ 850062848
Phone: 6022545321
NPI Identifier 1700874310
View Full Profile

Dr. Brenda Dennert , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1300 N 12th St, Suite 608, Phoenix, AZ 850062848
Phone: 6022545321
NPI Identifier 1235127846
View Full Profile

Dr. David J. Drewitz , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
349 E Coronado Rd, Phoenix, AZ 850041525
Phone: 6022665678
NPI Identifier 1174574610
View Full Profile

Dr. Joseph B Fares , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
18404 N Tatum Blvd, Suite 101, Phoenix, AZ 850321511
Phone: 6235805390
NPI Identifier 1376523902
View Full Profile

Dr. Michael Francis Foley , DO

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
9250 N 3rd St Ste 4035, Phoenix, AZ 850202434
Phone: 6022793575
NPI Identifier 1235365784
View Full Profile

Dr. Florin Gaidici , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1310 N 24th St Ste 100, Phoenix, AZ 850084617
Phone: 4809851093
NPI Identifier 1780686147
View Full Profile

Dr. Bradford C Gelzayd , MD

Internal Medicine - Gastroenterology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3815 E Bell Rd Ste 3200, Phoenix, AZ 850322162
Phone: 4808401754
NPI Identifier 1306826086
View Full Profile

Frequently Asked Questions about Internal Medicine - Gastroenterology in Phoenix

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 Arizona 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.