Updated October 2026

Medical groups in New York

Medical group directory
New York

Medical groups: 7,300
Multi-specialty: 1,711
Single-specialty: 5,589
More than one site: 3,639
100+ physicians: 184

There are 7,300 medical groups in New York with a Medicare PAC ID. Northwell Health Physician Partners Cardiology at Great Neck is the largest, with 5,741 New York physicians. Northwell Health has the most physicians across its groups, 7,342, and 73% of New York groups are independent.

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Northwell Health Physician Partners Cardiology at Great Neck is the largest medical group in New York, with 5,741 physicians

Ranked by physicians with a New York address linked to each group. NYU Langone Orthopedic Surgery Associates is second with 5,195, and Mount Sinai Institute for Liver Medicine third with 3,317. 184 New York groups have 100 or more physicians.

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Medical groups in New York, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	Northwell Health Physician Partners Cardiology at Great NeckWestbury · 1,085 sites	Parent on file	5,741	10,593	Decision makers
2	NYU Langone Orthopedic Surgery AssociatesNew York · 636 sites	Parent on file	5,195	8,781	Decision makers
3	Mount Sinai Institute for Liver MedicineNew York · 386 sites	Parent on file	3,317	4,751	Decision makers
4	Montefiore Einstein Faculty Practice GroupYonkers · 378 sites	Parent on file	2,720	5,243	Decision makers
5	Weill Cornell PhysiciansNew York · 175 sites	Parent on file	2,164	3,159	Decision makers
6	Physician Affiliate Group of New York (PAGNY)New York · 97 sites	Parent on file	1,424	2,166	Decision makers
7	Rochester General HospitalRochester · 155 sites	Parent on file	1,263	2,515	Decision makers
8	CareMount MedicalMount Kisco · 191 sites	Parent on file	1,143	1,772	Decision makers
9	Westchester Medical Center Advanced Physician ServicesHawthorne · 126 sites	Parent on file	1,086	1,679	Decision makers
10	University of Rochester Medical Faculty Group (URMFG)Rochester · 134 sites	Parent on file	972	1,859	Decision makers
11	NYC Health + HospitalsNew York · 81 sites	Parent on file	938	2,125	Decision makers
12	Albany Med EmUrgentCareMenands · 126 sites	Parent on file	892	1,680	Decision makers
13	Mount Sinai Nuclear Medicine AssociatesNew York · 53 sites	Parent on file	833	1,119	Decision makers
14	Unity Physician ServicesRochester · 110 sites	Parent on file	806	1,614	Decision makers
15	NewYork-Presbyterian Medical Group/WestchesterYorktown Heights · 71 sites	Parent on file	741	1,137	Decision makers
16	Maimonides Medical CenterBrooklyn · 77 sites	Parent on file	716	1,180	Decision makers
17	North Shore-LIJ Anesthesiology, P.C.Chappaqua · 129 sites	Parent on file	707	1,202	Decision makers
18	Mount Sinai Elmhurst Faculty Practice GroupElmhurst · 66 sites	Parent on file	642	720	Decision makers
19	Rochester Regional HealthRochester · 136 sites	Parent on file	597	1,259	Decision makers
20	Cardiac Interventional GroupFresh Meadows · 173 sites	Parent on file	594	1,038	Decision makers
21	Downtown Bronx Medical AssociatesBronx · 87 sites	Parent on file	588	900	Decision makers
22	Bassett Medical CenterCooperstown · 138 sites	Parent on file	583	1,101	Decision makers
23	Brookdale University Hospital and Medical CenterBrooklyn · 30 sites	Parent on file	519	656	Decision makers
24	Clifton Springs Hospital & ClinicClifton Springs · 15 sites	Parent on file	508	877	Decision makers
25	Mount Sinai Doctors Long IslandGreenlawn · 70 sites	Parent on file	503	570	Decision makers
26	BronxCare Health SystemBronx · 21 sites	Parent on file	499	740	Decision makers
27	United Memorial Medical CenterBatavia · 49 sites	Parent on file	490	795	Decision makers
28	CityMDNew York · 234 sites	Parent on file	481	798	Decision makers
29	NewYork-Presbyterian Medical Group QueensFresh Meadows · 66 sites	Parent on file	468	716	Decision makers
30	Harlem Medical AssociatesNew York · 68 sites	Parent on file	458	649	Decision makers
31	NYC Health + Hospitals/South Brooklyn Health, Ruth Bader Ginsburg HospitalBrooklyn · 66 sites	Parent on file	455	708	Decision makers
32	Jamaica Hospital Medical CenterMelville · 30 sites	Parent on file	438	754	Decision makers
33	Interfaith Medical CenterBrooklyn · 29 sites	Parent on file	432	543	Decision makers
34	Highland HospitalRochester · 79 sites	Parent on file	429	751	Decision makers
35	Kaleida HealthBuffalo · 53 sites	Parent on file	428	712	Decision makers
36	AdvantageCare PhysiciansNew York · 62 sites	Parent on file	424	644	Decision makers
37	ColumbiaDoctors (Columbia University Irving Medical Center)New York · 31 sites	Parent on file	418	524	Decision makers
38	TJH Medical Services, PCJamaica · 59 sites	Parent on file	413	440	Decision makers
39	Nassau University Medical Center (NUMC), Department of Psychiatry and Behavioral SciencesEast Meadow · 9 sites	Parent on file	412	502	Decision makers
40	NYC Health + Hospitals/Metropolitan (Metropolitan Hospital Center)New York · 53 sites	Parent on file	410	599	Decision makers
41	Newark-Wayne Community HospitalNewark · 5 sites	Parent on file	404	649	Decision makers
42	St. Peter's Medical AssociatesAlbany · 83 sites	Parent on file	400	793	Decision makers
43	NewYork-Presbyterian Medical Group WestchesterYorktown Heights · 41 sites	Parent on file	393	488	Decision makers
44	Staten Island University HospitalStaten Island · 31 sites	Parent on file	387	503	Decision makers
45	St. Joseph's Physicians Primary Care Center - OB/GYNSyracuse · 60 sites	Parent on file	378	748	Decision makers
46	UHS Wilson Medical CenterJohnson City · 59 sites	Parent on file	376	794	Decision makers
47	Essen Medical AssociatesBronx · 82 sites	Parent on file	375	1,238	Decision makers
48	NYU Langone HealthNew York · 62 sites	Parent on file	373	871	Decision makers
49	Westmed Medical GroupRye Brook · 33 sites	Parent on file	370	492	Decision makers
50	Samaritan HospitalTroy · 33 sites	Parent on file	366	735	Decision makers

Showing 1 to 10 of 7,300 medical groups in New York

Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data

Northwell Health has the most physicians in New York medical groups, with 7,342 across 60 groups

Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 223 parent organizations have two or more New York medical groups. Among health systems, University of Rochester Medical Center has the most groups, 76. Each clinician counts once per parent organization.

Parent organizations with the most New York medical groups
#	Parent organization	New York groups	Physicians	HCPs
1	Northwell HealthHealth system	60	7,342	14,162
2	NYUAcademic health system	14	5,424	9,427
3	Mount Sinai Health SystemHealth system	28	5,015	7,076
4	Montefiore EinsteinHealth system	27	3,437	6,303
5	University of Rochester Medical CenterAcademic health system	76	2,191	4,387
6	Cornell UniversityAcademic health system	3	2,188	3,228
7	NewYork-Presbyterian HospitalHealth system	17	1,991	2,954
8	NYCLocal government	5	1,875	3,539
9	Rochester Regional HealthHealth system	19	1,794	3,699
10	Physician Affiliate Group of New York (PAGNY)Physician staffing company	3	1,713	2,638

Top 10 of 223 parent organizations with two or more New York groups

Northwell HealthHealth system · 60 New York medical groups
Northwell Health Physician Partners Cardiology at Great NeckMulti-specialty group · Westbury
North Shore-LIJ Anesthesiology, P.C.Medical group · Chappaqua
58 more New York groups and their practice sites

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Org Hierarchy Explorer maps every group, site of care and clinician under the parent, with the leaders at each group.

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Source: Dmand AI Org Hierarchy Data

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Dmand AI maps the owners, administrators and physician leaders at each of the 7,300 New York medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.

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73% of New York medical groups are independent, with no larger parent organization

A group counts as independent when no health system, platform or other organization sits above it in the org hierarchy. Every other group belongs to a larger organization.

New York medical groups by ownership

Independent5,31573%
Health system or hospital6539%
Platform or corporate owner5668%
Community or government3655%
Other organization4015%

Source: Dmand AI Org Hierarchy Data

1,054 New York medical groups practice at a hospital site

Beyond their own offices, groups practice at the sites of care linked to them in the org hierarchy. A group can practice at several kinds of site, so the shares overlap.

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

Primary care groups are the most common medical groups in New York, with 2,279

Each group is counted once, under its main specialty. Rehabilitation and therapy groups are second, with 1,205, and 1,711 New York groups are multi-specialty.

Source: Dmand AI Professional Profile Data

134,932 New York HCPs work in New York medical groups, 56,287 of them physicians

Each clinician is counted once, across every New York group they are linked to. Only clinicians with a New York address are counted.

HCPs in New York medical groups by type

Physicians (MD, DO)56,28742%
Nurses and nurse practitioners22,38817%
Behavioral health clinicians19,81215%
Physician assistants14,53811%
Therapists (PT and OT)10,1087%
Other HCPs11,7999%

Source: Dmand AI Affiliation Data

New York has the most medical groups in New York, with 1,048

1,048medical groups in New York 1,035medical groups in Brooklyn 250medical groups in Bronx 219medical groups in Rochester 170medical groups in Staten Island 161medical groups in Flushing

More New York cities with medical groups

Source: Doctors and Clinicians National Downloadable File (CMS)

Each New York medical group profile shows the parent, sites, clinicians and identifiers

Clinicians and specialtiesA count by specialty and a sample of the group's cliniciansOn every profile
Practice locationsMain site and a sample of practice locations, with a count of the restOn every profile
Medicare Part B paymentsMedicare payments to the group, from CMSOn every profile
Group NPI and Medicare PAC IDIdentifiers for matching records across sourcesOn every profile
Parent organizationThe health system, platform or owner above the groupOn every profile
Every clinician and siteThe full roster and every practice locationWith a free account
Leader and clinician contactsWork emails and mobile numbers, found on request and then validatedWith a free account
EHR used by the group's cliniciansThe EHR in use at the group's sitesWith a free account

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Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data

Sources for the New York medical group directory

Sources for the data on this page
Data on this page	Source
Medical groups, specialties and sites	Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Professional Profile Data
Parent organizations and independence	Dmand AI Org Hierarchy Data
Physicians and HCPs	Dmand AI Affiliation Data
Group NPI and PAC ID	NPPES NPI Registry (CMS) and Doctors and Clinicians National Downloadable File (CMS)

Data last refreshed October 2026Report an inaccuracy Remove my information

The directory lists groups with a Medicare PAC ID.

FAQ

Frequently asked questions about medical groups in New York

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

How many medical groups are in New York?

There are 7,300 medical groups in New York with a Medicare PAC ID: 1,711 multi-specialty and 5,589 single-specialty.

What is the largest medical group in New York?

Northwell Health Physician Partners Cardiology at Great Neck in Westbury, with 5,741 physicians and 10,593 HCPs with a New York address. NYU Langone Orthopedic Surgery Associates is second with 5,195, and Mount Sinai Institute for Liver Medicine is third with 3,317.

Which health system has the most medical groups in New York?

By physicians, Northwell Health, with 7,342 across 60 groups, followed by NYU with 5,424 and Mount Sinai Health System with 5,015.

How many New York medical groups are independent?

5,315, or 73%, have no larger parent organization in the Dmand AI org hierarchy. 653 belong to a health system or hospital and 566 to a physician platform or corporate owner.

How many New York medical groups practice at a hospital?

1,054 New York groups practice at a hospital site linked to them in the Dmand AI org hierarchy.

How do I find a medical group's NPI or PAC ID?

Each medical group profile lists the group NPI and Medicare PAC ID at the top, with the main address and phone number. The NPI comes from the NPPES NPI Registry and the PAC ID from CMS Medicare enrollment.

How do I find decision makers at New York medical groups?

Open a group's profile for its parent organization and leaders, then get work emails and mobile numbers through Dmand AI's healthcare waterfall enrichment. 30 days free, self-serve, no credit card.

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