List of Endocrinologists in the USA

Last updated 21 October 2026

There are 1,619 endocrinologists in the USA, one in every 39,450 US companies. Most of them are small: two in three have one to four people, and only 22 firms employ 50 people or more. One in eleven endocrinology practices is based in New York, Houston, Miami, Los Angeles and Jacksonville. Below you find the largest endocrinology 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.

1,619 companies indexed · Data counted on 21 October 2026

Companies1,6191 in39,450 US companiesCities747Largest cityNew York 52Sole traders11%Employees1-4 (65%)Revenue$100-500K (73%)Email36%Phone100%Website94%

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A live view of all 1,619 endocrinology practices, sorted by revenue. Narrow it by region, city, employee size, revenue, legal form or founding year, or search a firm by name.

Nuvance Health Medical Practice Ct, INC.Nuvance Health Medical Practice Ct, 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	Nuvance Health Medical Practice Ct, INC.	USA	Danbury	25 Germantown Rd	Ct	06810-5036	*****.org	1985	$423,676,256	300	Corporation	3	0171304
2	Decatur Memorial Hospital	USA	Decatur	2300 N Edward St	Macon	62526-4192	*****.health	2019	$308,690,825	1,311	Corporation	27	08712468
3	Aspirus Clinics, INC.	USA	Wausau	425 Pine Ridge Blvd	Marathon	54401	*****.org	1990	$137,947,293	4	Corporation	72	W 032059
4	Newton Healthcare CORPORATION	USA	Newton	600 Medical Center Dr	Harvey	67114-8780	*****.com	1903	$105,052,120	539	Corporation	N/A	1575125
5	Access Health Care, LLC	USA	Spring Hill	1202 Mariner Blvd	Hernando	34609-5603	*****.com	2000	$24,552,665	33	Corporation	17	L00000013248
6	Rockwood Clinic, P.S.	USA	Spokane	400 E 5th Ave Frnt	Spokane	99202-1336	*****.com	1985	$21,263,180	1,300	Corporation	20	601048563
7	Diabetes And Glandular Disease Clinic, P.A.	USA	San Antonio	5107 Medical Dr	Bexar	78229-4801	*****.com	1979	$8,203,340	95	Corporation	N/A	742146518
8	Center For Wound Healing, INC.	USA	Tarrytown	155 White Plains Rd	Westchester	10591-5523	*****.com	2010	$8,158,432	224	Corporation	10	0600241465
9	Highland Medical, P.C.	USA	Nyack	160 N Midland Ave	Rockland	10960-1912	*****.com	1998	$6,662,995	55	Corporation	104	2292980
10	Endocrine Associates Of Dallas, P.A.	USA	Dallas	10260 N Central Expy Ste 100	Dallas	75231-3428	*****.com	1974	$4,754,810	25	Partnership of unknown type	2	N/A
11	Atlanta Diabetes Associates, P.C.	USA	Atlanta	1800 Howell Mill Rd Nw Ste 450	Fulton	30318-2538	*****.com	1985	$4,516,571	38	Corporation	N/A	J404427
12	Medical Associates Of Brevard, LLC	USA	Melbourne	2200 W Eau Gallie Blvd Ste 202a	Brevard	32935-3166	*****.com	2004	$4,284,301	7	Corporation	2	L04000054279
13	Endosurgical Center Of Central NJ	USA	East Brunswick	800 Ryders Ln	Middlesex	08816	*****.com	2000	$3,644,291	24	Corporation	N/A	0600077862
14	Arizona Endocrinology Center	USA	Phoenix	15640 N 28th Dr	Maricopa	85053-4059	*****.com	2013	$2,491,351	25		N/A	N/A
15	North Atlanta Endocrinology And Diabetes, P.C.	USA	Lawrenceville	771 Old Norcross Rd Ste 200	Gwinnett	30046-4386	*****.com	1989	$2,490,347	25	Corporation	N/A	K328240
16	Sparta Medical Associates, P. A.	USA	Sparta	89 Sparta Ave Ste 100	Sussex	07871-1790	*****.org	1965	$2,481,615	35	Corporation	3	N/A
17	Frederick Internal Medicine And Endocrinology Services	USA	Frederick	65 Thomas Johnson Dr Ste C	Frederick	21702-4371	*****.org	1989	$2,141,157	25	Corporation	N/A	D03459880
18	Personique, INC	USA	Austin	630 W 34th St Ste 201	Travis	78705-1229	*****.com	1966	$2,127,202	25	Corporation	N/A	0801154188
19	Jellinger & Novak, Md, PA	USA	Hollywood	1150 N 35th Ave Ste 590	Broward	33021-5468	*****.com	1976	$2,124,990	28	Corporation	N/A	591681317
20	Ariel Zisman, M.D., P.A.	USA	Miami	2920 Ne 207th St	Miami-dade	33180-1440	*****.com	2005	$1,965,972	9	Corporation	N/A	P05000093184
21	Endocrinology-Nuclear Medicine Associates P.A.	USA	San Antonio	1303 Mccullough Ave Ste 374	Bexar	78212-5609	*****.com	1979	$1,939,699	18	Corporation	N/A	742145952
22	Florence Comite, M.D., P.C.	USA	New York	150 Central Park S Fl 2	New York	10019-1566	*****.com	2007	$1,922,874	25	Corporation	N/A	3480286
23	Hellman & Rosen Endocrine Associates, PC	USA	North Kansas City	2790 Clay Edwards Dr Ste 1250	Clay	64116-3260	*****.com	1981	$1,918,625	15	Corporation	N/A	P00234580
24	Sislen, Eisner, Kaufman, Ramey, Kavalier, Horn & Chang Pllc	USA	Washington	1120 19th St Nw Ste 200	District of Columbia	20036-3615	*****.com	1974	$1,800,271	10	Partnership of unknown type	N/A	520847836
25	Maryland Endocrine, P.A.	USA	Columbia	10710 Charter Dr Ste 410	Howard	21044-3276	*****.com	1997	$1,741,097	24	Corporation	N/A	D02319127

Showing 25 of 1,619 companies

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Firm sizes in the USA

Of the 1,619 US endocrinology practices with a known headcount, 1,055 (65%) have one to four people, 443 have five to nine, 99 have ten to 49 and 22 have 50 or more. Most firms turn over between $100,000 and $500,000 a year (1,118, 73%).

EU size bands · the grey line shows all US companies

Micro under 101,498 93%
Small 10 to 4999 6%
Medium 50 to 24920 1%
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; 6 more than $10 million.

firms were entered in 2026.

Endocrinology practices in New York

New York has 52 endocrinologists and endocrinology practices, <0.1% of all 732,093 New York companies and 180% above the national share. Three in four New York firms have fewer than five people; 1 has 50 or more. 0 new firms were entered in 2026, 5 date from before 1990.

Size

1-4 staff: 39 · 75%
5-9: 10 · 19%
10-19: 1 · 2%
20-49: 1 · 2%
50+: 1 · 2%

Legal form

Sole traders: 9 · 17%
Partnerships: 0 · 0%
Corporations and LLCs: 17 · 33%
Other or none: 26 · 50%

Of the US total: 3.2%
Of all New York companies: <0.1%
Against the national share: 2.8×

New

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

Old

Before 1990: 5 · 10%
1990 or later: 47 · 90%
Of USA's pre-1990 firms: 3.1%

Reachable

Email: 19 · 37%
Phone: 52 · 100%
Website: 42 · 81%

Revenue (USD)

Under $100K: 4 · 8%
$100K-$500K: 43 · 84%
$500K-$1M: 3 · 6%
$1M and more: 1 · 2%

Largest

1241
225
318
48
56

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How many endocrinologists are there in the USA?

Endocrinologists and endocrinology practices in the USA

1,619

21 October 2026

There are 1,619 endocrinologists and endocrinology practices in the USA in our data (21 October 2026). That is one in every 39,450 US companies. None was entered in the register so far in 2026.

Structure

Single-site firms: 1,496 92%
Head offices: 39
Branch offices: 84

Classification

Our platform filter is SIC 8011, 8062.

392 of the 1,619 are corporations and LLCs (24%); 181 are sole traders. They come from the state business registers and our US register data, through the Company Data API.

Where in the USA?

New York has the most endocrinologists in the USA (52), ahead of Houston (25), Miami (23), Los Angeles (23) and Jacksonville (19). Together the five hold one in eleven of them.

Cities by number of firms

747 US cities have at least one endocrinology practice; 16 have ten or more; 439 have exactly one.

Largest endocrinology practices in the USA

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

Decatur Memorial Hospital is the largest endocrinology practice in the USA by headcount. 22 firms employ 50 people or more; 13 employ 100 or more.

1Decatur1,311 staff
2Spokane1,300 staff
3Newton539 staff
4Hauppauge345 staff
5Sheboygan332 staff
6Morgantown328 staff
7Tarrytown224 staff
8Staten Island213 staff
9Little Rock170 staff
10Medford118 staff

By employee size · 1,619 firms with a known headcount

Employees	Firms	%
1-4	1,055	65%
5-9	443	27%
10-19	65	4%
20-49	34	2%
50-99	9	0.6%
100-199	5	0.3%
200-499	6	0.4%
500-999	1	<0.1%
1,000+	1	<0.1%

65% have 1 to 4 people; 34 have 20 to 49; 22 have 50 or more.

By yearly revenue (USD)

Revenue	Firms	%
< $100K	298	19%
$100K-$500K	1,118	73%
$500K-$1M	79	5%
$1M-$5M	31	2%
$5M-$10M	3	0.2%
$10M-$50M	2	0.1%
$100M-$500M	4	0.3%

73% between $100,000 and $500,000; 31 between $1M and $5M; 9 above $5M.

How reachable are they?

Endocrinology practices are easier to reach than the average US company: 100% list a phone number and 94% a website.

Email589 36%
Phone1,618 100%
Website1,519 94%

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 0 US endocrinology practices from before 1900, 4 from before 1950 and 160 from before 1990.

1903
1. Newton
1949
1. Seattle
1958
1. New York
1961
1. Little Rock
1965
1. Lakewood
1965
1. Sparta

Fewer than five firms date from before 1950, so the timeline starts with the oldest firms before 1990.

Older than you

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Move the slider to a year. Two live counts, scoped to this industry.

1990

160

US endocrinology practices date from before 1990

were entered in 1990

Sole traders or corporations: how they are organised

One in nine US endocrinology practices work as sole traders, against 5% of all US companies. Only one firm in four is a corporations or LLCs.

Sole traders18111%
Partnerships171%
Corporations and LLCs39224%
No form on record or other1,02964%

Single-site: 92%
Head offices: 39
Branches: 84

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

How they compare

Next to related industries

There are 26 general practitioners for every endocrinology practice in the USA.

Industry	Firms	Website	1-4 staff
General Practitioners	41,594	85%	67%
General Surgeons	6,961	92%	68%
Gastroenterologists	5,161	95%	59%
Endocrinologists	1,619	94%	65%
Geriatricians	989	85%	65%
Hematologists	674	95%	64%

Free sample: endocrinology practices in North America

Frequently asked questions

How many endocrinologists are there in the USA?

There are 1,619 endocrinologists and endocrinology practices in the USA in our data, counted on 21 October 2026. That is one in every 39,450 US companies.

Which is the largest endocrinology practice in the USA?

Decatur Memorial Hospital in Decatur, with 1,311 staff. By revenue Nuvance Health Medical Practice CT in Danbury leads with $423.7 million a year.

Which US city has the most endocrinologists?

New York, with 52, ahead of Houston (25), Miami (23), Los Angeles (23) and Jacksonville (19).

How many endocrinology practices are there in New York?

52, which is <0.1% of all 732,093 New York companies and 180% above the national share.

How big is a typical endocrinology practice?

Small. 65% of the 1,619 firms with a known headcount have one to four people; 22 have 50 or more. Most turn over between $100,000 and $500,000 a year.

Are US endocrinologists sole traders or companies?

One in nine (181) are sole traders, 1% are partnerships and 24% (392) are corporations and LLCs.

How many endocrinology practices started in 2026?

0 were entered in the US register so far in 2026, after 9 in 2025.

What is the oldest endocrinology practice in the USA?

Newton Healthcare in Newton, 1903, followed by Seattle Women's Clinic in Seattle (1949) and Robert L Segal MD in New York (1958). 0 firms date from before 1900.

Which industry code covers endocrinologists?

Our platform filters them on SIC 8011 (offices and clinics of doctors of medicine) and 8062 (general medical and surgical hospitals).

Can I download the full list?

Yes. All 1,619 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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