Updated October 2026

Gastroenterologists in Houston, TX

Gastroenterology
Houston, Texas

Gastroenterologists: 239
Linked to a hospital or group: 219
Hospitals with a gastroenterologist: 52
Medical groups with a gastroenterologist: 49
Practice at a hospital: 186

There are 239 gastroenterologists in Houston. Baylor Medicine has the most, 34, and Houston Methodist Hospital has the most affiliated gastroenterologists, 42. 33% finished medical school 30 or more years ago.

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Houston gastroenterologists, listed A to Z by last name

Each gastroenterologist on the list has gastroenterology as their primary specialty and a Houston practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.

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Houston gastroenterologists, A to Z
Gastroenterologist	Hospitals	Medical groups	Email and phone
Ali AamarNPI 1922419209	3 hospitals	2 groups	Contacts
Wasif M. Abidi, MD, PhDNPI 1821230780	3 hospitals	2 groups	Contacts
Bincy Paulose Abraham, MDNPI 1578767166	3 hospitals	2 groups	Contacts
Shaadi John AbughazalehNPI 1487159984	2 hospitals	1 group	Contacts
Naga Saranya Addepally, MDNPI 1275949265	5 hospitals	1 group	Contacts
Babatunde Olufemi Adeyefa, MDNPI 1699940528	3 hospitals	2 groups	Contacts
Suneal Kumar Agarwal, MDNPI 1720242324	2 hospitals	2 groups	Contacts
Mazen Al-Asadi, MDNPI 1598782682	3 hospitals	2 groups	Contacts
Ihsan A. Al Bayati, MDNPI 1538571849	2 hospitals	3 groups	Contacts
Basim Ali, MBBSNPI 1467081521	1 hospital	1 group	Contacts
Shahid Ali, MDNPI 1881604460	2 hospitals	3 groups	Contacts
Mouhamad Radwan Al-Sabbagh, MDNPI 1740260900	5 hospitals	1 group	Contacts
Brick Eduardo Alva, MDNPI 1720025380	2 hospitals	-	Contacts
Harshinie Chamindika Amaratunge, MDNPI 1265696504	5 hospitals	2 groups	Contacts
Sharmila Anandasabapathy, MDNPI 1740380682	2 hospitals	1 group	Contacts
Darshan P. Anandu, MDNPI 1487657680	4 hospitals	3 groups	Contacts
Phonthep Angsuwatcharakon, MD, MScNPI 1730666041	-	-	Contacts
Michael Jacob Antony, MDNPI 1780209361	-	-	Contacts
Pedro Miguel Arguello, MDNPI 1508876939	-	1 group	Contacts
Meera B. Avila, MDNPI 1740608348	1 hospital	3 groups	Contacts
Nathaniel P. Avila, MDNPI 1346683323	5 hospitals	5 groups	Contacts
Fares Walid Ayoub, MDNPI 1679936868	4 hospitals	2 groups	Contacts
Jaspaul Singh Azad, MDNPI 1972719862	2 hospitals	-	Contacts
Hamza Aziz, MDNPI 1306230362	6 hospitals	5 groups	Contacts
Natarajan S. Bala, FACP, MDNPI 1912990417	4 hospitals	3 groups	Contacts
Maya Balakrishnan, MDNPI 1295911584	1 hospital	1 group	Contacts
Ryan R. Barrientos, MDNPI 1982975405	1 hospital	2 groups	Contacts
Alberto Oswaldo Barroso, MDNPI 1548335458	5 hospitals	2 groups	Contacts
Tamneet Basra, MDNPI 1467806778	5 hospitals	2 groups	Contacts
Dipti Bavishi, MDNPI 1952348898	-	1 group	Contacts
Jessica Delaisse Bernica, MDNPI 1801215421	3 hospitals	2 groups	Contacts
Asmeen Bhatt, MDNPI 1770784399	-	2 groups	Contacts
Manoop S. Bhutani, MDNPI 1003989310	1 hospital	1 group	Contacts
Faraz Bishehsari, MDNPI 1760645659	1 hospital	2 groups	Contacts
Arturo A. Bravo, MDNPI 1952372484	4 hospitals	-	Contacts
Robert S. Bresalier, MDNPI 1861586653	1 hospital	1 group	Contacts
Margaret E. Bridges, MDNPI 1013992916	-	-	Contacts
Johanna Leigh Chan, MDNPI 1679716096	2 hospitals	2 groups	Contacts
Saurabh Chandan, MDNPI 1194145169	2 hospitals	2 groups	Contacts
Suresh T. Chari, MDNPI 1326011487	1 hospital	-	Contacts
Yiu-Ting Timothy Chiu, MDNPI 1184043861	3 hospitals	3 groups	Contacts
Reena Vijay Chokshi, MDNPI 1255494746	2 hospitals	3 groups	Contacts
George Cholankeril, MDNPI 1154760155	3 hospitals	1 group	Contacts
John Benjamin Clemmons Jr., MDNPI 1518997477	1 hospital	-	Contacts
Rhonda Audrey Cole, MDNPI 1710093455	1 hospital	-	Contacts
Ronald C. Colman, MDNPI 1871579417	2 hospitals	2 groups	Contacts
Emmanuel Sebastian Coronel Cordero, MDNPI 1437445905	1 hospital	1 group	Contacts
Sunil DachaNPI 1548424211	5 hospitals	2 groups	Contacts
Sumanth R. Daram, MDNPI 1619957107	5 hospitals	1 group	Contacts
Roy T. Davee, MDNPI 1184911273	4 hospitals	1 group	Contacts

Showing 1 to 50 of 234 Houston gastroenterologists

The list shows the 234 gastroenterologists with a public profile. The other 5 are counted in the total and searchable with a free account.

Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data

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Dmand AI has the EHR for 226 of 239 Houston gastroenterologists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.

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Baylor Medicine has the most gastroenterologists in Houston, with 34

Houston Methodist Specialty Physician Group is second with 33, and Houston Methodist third with 31. Counts are gastroenterologists with a Texas address linked to each group.

Medical groups with the most gastroenterologists in Houston
#	Medical group	Parent organization	Gastroenterologists
1	Baylor MedicineHouston	Parent on file	34
2	Houston Methodist Specialty Physician GroupHouston	Parent on file	33
3	Houston MethodistHouston	Parent on file	31
4	UT PhysiciansHouston	Parent on file	29
5	Physicians Referral ServiceHouston	Parent on file	25
6	Baylor College of MedicineHouston	Parent on file	21
7	Texas Digestive Disease ConsultantsSouthlake	Parent on file	18
8	Texas Children's HospitalHouston	Parent on file	18
9	Kelsey-Seybold ClinicHouston	Parent on file	16
10	Houston Regional Gastroenterology Institute (HRGI)Sugarland	-	10

Top 10 of 49 Houston medical groups with a gastroenterologist

Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data

Houston Methodist Hospital has the most affiliated gastroenterologists in Houston, with 42

Memorial Hermann-Texas Medical Center is second with 40, and Memorial Hermann Greater Heights Hospital third with 37. Houston gastroenterologists are affiliated with 52 hospitals in all.

Hospitals with the most gastroenterologists in Houston
#	Hospital	Health system	Gastroenterologists
1	Houston Methodist HospitalHouston	Houston Methodist	42
2	Memorial Hermann-Texas Medical CenterHouston	Memorial Hermann Health System	40
3	Memorial Hermann Greater Heights HospitalHouston	Memorial Hermann Health System	37
4	Baylor St. Luke's Medical CenterHouston	CommonSpirit Health	35
5	The University of Texas MD Anderson Cancer CenterHouston	The University of Texas System	28
6	Memorial Hermann Memorial City Medical CenterHouston	Memorial Hermann Health System	27
7	Harris Health Ben Taub HospitalHouston	Harris County, TX	23
8	Houston Methodist West HospitalHouston	Houston Methodist	23
9	Houston Methodist Clear Lake HospitalNassau Bay	Houston Methodist	21
10	Houston Methodist Sugar Land HospitalSugarland	Houston Methodist	21

Top 10 of 52 Houston hospitals with an affiliated gastroenterologistAll 37 Houston hospitals

See every hospital and group for each Houston gastroenterologist

Each public profile names one place a gastroenterologist practices. A free account shows all of them, with the employer, the EHR and validated contacts.

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Source: Dmand AI Affiliation Data

Most Houston gastroenterologists practice at a hospital: 186 of the 218 with a mapped site

126 also practice at a medical group site, and 57 at an ambulatory surgery center. A gastroenterologist can practice at several kinds of site, so the shares overlap.

Houston gastroenterologists by site of care

Hospitals18685%
Medical group practices12658%
Ambulatory surgery centers5726%
Physician offices3416%
Skilled nursing facilities126%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

33% of Houston gastroenterologists finished medical school 30 or more years ago

65 of the 196 Houston gastroenterologists with a graduation year on file. 11 graduated in the last 10 years, fewer than graduated 40 or more years ago.

Physicians by years since medical school

Under 10 years ago116%
10 to 19 years ago7237%
20 to 29 years ago4824%
30 to 39 years ago2412%
40 or more years ago4121%

Source: Dmand AI Professional Profile Data

Every Houston gastroenterologist profile shows current hospitals and groups, Medicare activity and NPI details

Primary practiceThe main place they practice, with its type and cityOn every profile
Every site of careEach hospital, clinic and group where they practice nowWith a free account
EmployerThe organization they work for, when one is on fileWith a free account
Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
EHR in useThe EHR at each site where they practiceWith a free account
Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account

Free account: 30 days free, self-serve, no credit card.

Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data

Sources for the Houston gastroenterologist directory

Sources for the data on this page
Data on this page	Source
HCPs, types and specialties	NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groups	Dmand AI Affiliation Data
Medical school graduation year	Dmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracy Remove my information

Gastroenterologists are HCPs whose primary specialty is gastroenterology (taxonomy code 207RG0100X), with an active NPI and a Houston practice address.

FAQ

Frequently asked questions about gastroenterologists in Houston

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many gastroenterologists are in Houston?

239 gastroenterologists have an active NPI, a Houston practice address and gastroenterology (taxonomy code 207RG0100X) as their primary specialty. 219 of them are linked to a hospital or medical group.

Which Houston medical groups have the most gastroenterologists?

Baylor Medicine, with 34, followed by Houston Methodist Specialty Physician Group with 33 and Houston Methodist with 31.

Which Houston hospitals have the most gastroenterologists?

Houston Methodist Hospital, with 42 affiliated gastroenterologists, followed by Memorial Hermann-Texas Medical Center with 40 and Memorial Hermann Greater Heights Hospital with 37.

What share of Houston gastroenterologists practice at a hospital?

186 of the 218 Houston gastroenterologists with a mapped site of care, or 85%, have a current hospital affiliation.

What is the taxonomy code for gastroenterology?

207RG0100X is the NPPES taxonomy code for gastroenterology. Sub-specialties with their own code are counted on their own lists.

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