List of Gastroenterologists in the USA

Last updated 21 October 2026

There are 5,161 gastroenterologists in the USA, one in every 12,375 US companies. Most of them are small: three in five have one to four people, and only 33 firms employ 50 people or more. One in thirteen gastroenterology practices is based in New York, Houston, Brooklyn, Miami and Dallas. Below you find the largest gastroenterology practices in the USA, the cities where they cluster, how many started this year and which are the oldest. The full list with addresses, phone numbers and email is in our US company database or through the Company Data API.

5,161 companies indexed · Data counted on 21 October 2026

Companies5,1611 in12,375 US companiesCities1,382Largest cityNew York 151Sole traders11%Employees1-4 (59%)Revenue$100-500K (73%)Email41%Phone100%Website95%

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A live sample of the list

A live view of all 5,161 gastroenterology practices, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

University Of Cincinnati Physicians, INC.University Of Cincinnati Physicians, INC.

	Company Name	Country	City	Address 1	State/Province	Postal Code	Website	Founding Year	Yearly Revenue in U.S. Dollars	Employees Total	Business Legal Type - Description	Number of Companies in Group	Company Registration Number
1	University Of Cincinnati Physicians, INC.	USA	Cincinnati	222 Piedmont Ave Ste 2200	Hamilton	45219-4238	*****.com	1988	$418,117,387	350	Corporation	43	716246
2	The Portland Clinic Llp	USA	Portland	800 Sw 13th Ave	Multnomah	97205	*****.com	1943	$90,591,455	600	Partnership of unknown type	7	930400952
3	Allied Digestive Health LLC	USA	West Long Branch	187 State Route 36 Ste 230	Monmouth	07764-1306	*****.com	2013	$50,081,581	239	Corporation	2	600403722
4	Aga, LLC	USA	Atlanta	550 Peachtree St Ne Ste 1600	Fulton	30312	*****.com	1996	$48,957,418	600	Corporation	31	6902583
5	Capital Digestive Care, LLC	USA	Silver Spring	12510 Prosperity Dr Ste 200	Montgomery	20904-1640	*****.com	2007	$45,683,792	300	Corporation	15	W12034278
6	Arizona Digestive Health, P.C.	USA	Scottsdale	3260 N Hayden Rd	Maricopa	85251-6649	*****.com	2007	$23,680,194	360	Corporation	13	13723576
7	Ohio Gastroenterology Group, INC.	USA	Columbus	3400 Olentangy River Rd	Franklin	43202-1523	*****.com	1995	$21,163,607	130	Corporation	4	441357
8	Digestive Health Associates Of Texas PA	USA	Dallas	8267 Elmbrook Dr Ste 200	Dallas	75247-4078	*****.com	1996	$13,036,660	30	Corporation	25	752625765
9	Charlotte Gastroenterology & Hepatology, P.l.l.c.	USA	Charlotte	15830 Ballantyne Medical Pl Ste 175	Mecklenburg	28277-0763	*****.com	1998	$12,721,917	116	Corporation	11	0444549
10	Albany Gastroenterology Consultants, Pllc	USA	Albany	1375 Washington Ave Ste 101	Albany	12206-1040	*****.com	2024	$10,419,843	216	Corporation	2	4087096
11	Gastroenterology Consultants Of San Antonio, Pllc	USA	San Antonio	8415 Datapoint Dr Ste 700	Bexar	78229-3327	*****.com	2020	$10,385,944	25	Corporation	789	0803502484
12	Buffalo Surgery Center, LLC	USA	Buffalo	3921 Sheridan Dr	Erie	14226-1747	*****.com	1999	$9,947,962	50	Corporation	N/A	2423905
13	Jersey Shore Gastroenterology Associates P.A.	USA	Somers Point	408 Bethel Rd	Atlantic	08244-2191	*****.com	1992	$9,676,377	43	Corporation	5	0100518718
14	Gastroenterology Associates, P.A. Of Greenville	USA	Greenville	125 Halton Rd	Greenville	29607-3507	*****.com	1978	$9,151,095	80	Corporation	6	F195454
15	Prime Healthcare, P.C.	USA	Wethersfield	30 Jordan Ln Ste 2	Ct	06109-1278	*****.com	1998	$8,808,829	150	Corporation	10	0542138
16	Mid-America Gastro-Intestinal Consultants, P.C.	USA	Kansas City	4321 Washington St Ste 5600	Jackson	64111-5905	*****.com	1994	$7,387,430	34	Corporation	2	3796562
17	Digestive Health Specialists, P.A.	USA	Winston-salem	195 Kimel Park Dr	Forsyth	27103-6967	*****.ws	1979	$6,606,088	65	Corporation	N/A	0054733
18	Gastro Center Of Maryland, LLC	USA	Riverdale	6502 Kenilworth Ave Ste 100	Prince George'S	20737-1370	*****.com	2005	$5,814,452	15	Corporation	2	W10694859
19	Gastroenterology Specialties, PC.	USA	Lincoln	4545 R St Ste 100	Lancaster	68503-3799	*****.net	1988	$5,694,381	75	Corporation	N/A	0964461
20	Gi Associates & Endoscopy Center	USA	Flowood	2510 Lakeland Dr	Rankin	39232-9513	*****.md	2007	$5,247,356	91		N/A	N/A
21	Gastroenterology Assoc Of Central New Jersey	USA	Edison	1921 Oak Tree Rd Fl 1	Sussex	08820-2073	*****.net	1988	$4,959,853	26	Corporation	2	0100690704
22	Concorde Medical Group, Pllc	USA	New York	232 E 30th St	New York	10016-8202	*****.com	1996	$4,942,495	120	Corporation	9	2055553
23	Gastroenterlogy Associates Of Kingsport PC	USA	Kingsport	135 W Ravine Rd Ste 3-A	Sullivan	37660-3847	*****.com	1989	$4,760,722	47	Corporation	N/A	000627248
24	Dallas Neurosurgical Associates	USA	Dallas	8230 Walnut Hill Ln Ste 220	Dallas	75231-4425	*****.com	1970	$4,760,198	27	Corporation	3	751445713
25	Digestive Medicine Associates	USA	Hialeah	2140 W 68th St Ste 300	Miami-dade	33016-1815	*****.com	1993	$4,756,008	20	Corporation	3	L15000027089

Showing 25 of 5,161 companies

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Where in the USA?

New York has the most gastroenterologists in the USA (151), ahead of Houston (73), Brooklyn (70), Miami (65) and Dallas (51). Together the five hold one in thirteen of them.

Cities by number of firms

1,382 US cities have at least one gastroenterology practice; 102 have ten or more; 560 have exactly one. Click a city to set the lens.

By county 576 counties

County	Firms	%
Los Angeles	212	4%
New York	151	3%
Orange	147	3%
Ct	108	2%
Miami-Dade	100	2%
Harris	95	2%
Montgomery	91	2%
Nassau	86	2%
Kings	71	1%
Dallas	63	1%

Show all 576

Firm sizes in the USA

Of the 5,156 US gastroenterology practices with a known headcount, 3,039 (59%) have one to four people, 1,606 have five to nine, 478 have ten to 49 and 33 have 50 or more. Most firms turn over between $100,000 and $500,000 a year (3,496, 73%).

EU size bands · the grey line shows all US companies

Micro under 104,645 90%
Small 10 to 49478 9%
Medium 50 to 24931 0.6%
Large 250+2 <0.1%

Grey line: the share among all US companies (96% have under ten staff).

firms turn over more than $5 million a year; 11 more than $10 million.

firms were entered in 2026.

Gastroenterology practices in New York

New York has 151 gastroenterologists and gastroenterology practices, <0.1% of all 732,093 New York companies and 155% above the national share. Seven in ten New York firms have fewer than five people; none has 50 or more. 0 new firms were entered in 2026, 29 date from before 1990.

Size

1-4 staff: 105 · 70%
5-9: 39 · 26%
10-19: 3 · 2%
20-49: 4 · 3%
50+: 0 · 0%

Legal form

Sole traders: 25 · 17%
Partnerships: 4 · 3%
Corporations and LLCs: 51 · 34%
Other or none: 71 · 47%

Of the US total: 2.9%
Of all New York companies: <0.1%
Against the national share: 2.6×

New

Entered 2026 so far: 0
Entered 2025: 0
Of USA's 2026 entries: 0.0%

Old

Before 1990: 29 · 19%
1990 or later: 122 · 81%
Of USA's pre-1990 firms: 4.4%

Reachable

Email: 69 · 46%
Phone: 151 · 100%
Website: 143 · 95%

Revenue (USD)

Under $100K: 18 · 12%
$100K-$500K: 122 · 81%
$500K-$1M: 8 · 5%
$1M and more: 2 · 1%

Largest

1120
257
323
420
512

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Largest gastroenterology practices in the USA

The biggest firms by staff and by revenue, the largest in New York, the biggest newcomers of 2026 and the oldest firms. Click a name for the record.

Kaiser Foundation Hospitals is the largest gastroenterology practice in the USA by headcount. 33 firms employ 50 people or more; 14 employ 100 or more.

1Harbor City1,610 staff
2Atlanta600 staff
3Portland600 staff
4Cincinnati350 staff
5Silver Spring300 staff
6Charleston250 staff
7Albany216 staff
8Westlake Village183 staff
9Reading156 staff
10Reading156 staff

By employee size · 5,156 firms with a known headcount

Employees	Firms	%
1-4	3,039	59%
5-9	1,606	31%
10-19	295	6%
20-49	183	4%
50-99	19	0.4%
100-199	10	0.2%
200-499	2	<0.1%
500-999	0	0%
1,000+	2	<0.1%

59% have 1 to 4 people; 183 have 20 to 49; 33 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	873	18%
$100K-$500K	3,496	73%
$500K-$1M	266	6%
$1M-$5M	158	3%
$5M-$10M	9	0.2%
$10M-$50M	8	0.2%
$50M-$100M	2	<0.1%
$100M-$500M	1	<0.1%

73% between $100,000 and $500,000; 158 between $1M and $5M; 20 above $5M.

How many gastroenterologists are there in the USA?

Gastroenterologists and gastroenterology practices in the USA

5,161

21 October 2026

There are 5,161 gastroenterologists and gastroenterology practices in the USA in our data (21 October 2026). That is one in every 12,375 US companies. About one new firm is entered in the register every month this year (8 so far in 2026).

Structure

Single-site firms: 4,652 90%
Head offices: 166
Branch offices: 343

Classification

Our platform filter is SIC 8011.

1,515 of the 5,161 are corporations and LLCs (29%); 585 are sole traders. They come from the state business registers and our US register data, through the Company Data API.

How they compare

Next to related industries

There are 42 home care providers for every gastroenterology practice in the USA.

Industry	Firms	Website	1-4 staff
Home Care Providers	216,193	28%	79%
Opticians	54,801	66%	79%
Ophthalmologists	14,995	96%	54%
Oncologists	6,903	96%	51%
Gastroenterologists	5,161	95%	59%
Endocrinologists	1,619	94%	65%

Free sample: gastroenterology practices in North America

How reachable are they?

Gastroenterology practices are easier to reach than the average US company: 100% list a phone number and 95% a website.

Email2,092 41%
Phone5,159 100%
Website4,918 95%

Grey line: all US companies (email 15%, phone 42%, website 24%).

The full list with these fields is in our US company database.

The oldest firms in the USA

Our data holds 1 US gastroenterology practices from before 1900, 6 from before 1950 and 656 from before 1990.

1811
1. Framingham
1900
1. Anaheim
1934
1. Philadelphia
1943
1. Portland
1948
1. North Brunswick
1948
1. Union

Older than you

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1990

656

US gastroenterology practices date from before 1990

were entered in 1990

Sole traders or corporations: how they are organised

One in nine US gastroenterology practices work as sole traders, against 5% of all US companies. Three in ten are corporations and LLCs.

Sole traders58511%
Partnerships932%
Corporations and LLCs1,51529%
No form on record or other2,96858%

Single-site: 90%
Head offices: 166
Branches: 343

All US companies: 5% sole traders, 1% partnerships, 68% corporations and LLCs.

Frequently asked questions

How many gastroenterologists are there in the USA?

There are 5,161 gastroenterologists and gastroenterology practices in the USA in our data, counted on 21 October 2026. That is one in every 12,375 US companies.

Which is the largest gastroenterology practice in the USA?

Kaiser Foundation Hospitals in Harbor City, with 1,610 staff. By revenue University of Cincinnati Physicians in Cincinnati leads with $418.1 million a year.

Which US city has the most gastroenterologists?

New York, with 151, ahead of Houston (73), Brooklyn (70), Miami (65) and Dallas (51).

How many gastroenterology practices are there in New York?

151, which is <0.1% of all 732,093 New York companies and 155% above the national share.

How big is a typical gastroenterology practice?

Small. 59% of the 5,156 firms with a known headcount have one to four people; 33 have 50 or more. Most turn over between $100,000 and $500,000 a year.

Are US gastroenterologists sole traders or companies?

One in nine (585) are sole traders, 2% are partnerships and 29% (1,515) are corporations and LLCs.

How many gastroenterology practices started in 2026?

8 were entered in the US register so far in 2026, after 15 in 2025. 8 of them are corporations and LLCs.

What is the oldest gastroenterology practice in the USA?

Mark A Painter MD in Framingham, 1811, followed by Richard M Yip M D in Anaheim (1900) and Gi Menin Associates in Philadelphia (1934). 1 firm dates from before 1900.

Which industry code covers gastroenterologists?

Our platform filters them on SIC 8011 (offices and clinics of doctors of medicine).

Can I download the full list?

Yes. All 5,161 firms with address, phone, email, legal form, employees, revenue and founding year, as Excel, CSV or through the API.

Discover more: related industries, by city

The lists closest to this one. Every industry and city in the USA is on the USA page.

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Companies in US cities

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