Updated October 2026

Medical groups in Connecticut

Medical group directory
Connecticut

Medical groups: 1,291
Multi-specialty: 201
Single-specialty: 1,090
More than one site: 634
100+ physicians: 34

There are 1,291 medical groups in Connecticut with a Medicare PAC ID. Yale Health is the largest, with 2,233 Connecticut physicians. Hartford HealthCare has the most physicians across its groups, 2,668, and 71% of Connecticut groups are independent.

Find the decision makers at all 1,291 Connecticut medical groups

Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.

View contacts for free

Yale Health is the largest medical group in Connecticut, with 2,233 physicians

Ranked by physicians with a Connecticut address linked to each group. Hartford HealthCare Medical Group Specialists is second with 1,128, and Northeast Medical Group third with 1,047. 34 Connecticut groups have 100 or more physicians.

Filter this list with a free account

Sort and filter all 1,291 Connecticut medical groups by specialty, city, parent organization, group size, EHR in use and decision makers in Dmand AI.

Filter in Dmand AI

Medical groups in Connecticut, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	Yale HealthNew Haven · 211 sites	Parent on file	2,233	3,737	Decision makers
2	Hartford HealthCare Medical Group SpecialistsWethersfield · 233 sites	Parent on file	1,128	2,224	Decision makers
3	Northeast Medical GroupBridgeport · 195 sites	Parent on file	1,047	1,929	Decision makers
4	Hartford HospitalHartford · 87 sites	Parent on file	730	1,783	Decision makers
5	Trinity Health Of New England Medical GroupHartford · 121 sites	Parent on file	678	1,139	Decision makers
6	Danbury Medical GroupDanbury · 79 sites	Parent on file	495	844	Decision makers
7	UConn Medical GroupFarmington · 42 sites	Parent on file	492	790	Decision makers
8	Hartford HealthCare Medical GroupWethersfield · 119 sites	Parent on file	472	879	Decision makers
9	The Hospital of Central ConnecticutNew Britain · 29 sites	Parent on file	462	827	Decision makers
10	Stamford Health Medical GroupStamford · 52 sites	Parent on file	381	569	Decision makers
11	Connecticut Children'sHartford · 42 sites	Parent on file	377	670	Decision makers
12	Rehabilitation Associates, Inc.Fairfield · 60 sites	-	331	548	Decision makers
13	MidState Medical CenterMeriden · 7 sites	Parent on file	313	590	Decision makers
14	ProHealth PhysiciansFarmington · 98 sites	Parent on file	300	537	Decision makers
15	Starling PhysiciansRocky Hill · 48 sites	Parent on file	286	478	Decision makers
16	Connecticut Valley HospitalMiddletown · 53 sites	Parent on file	268	746	Decision makers
17	Physicians for WomenRocky Hill · 93 sites	Parent on file	261	400	Decision makers
18	The William W. Backus HospitalNorwich · 20 sites	Parent on file	260	519	Decision makers
19	Integrated Anesthesia AssociatesShelton · 45 sites	-	245	602	Decision makers
20	Manchester Memorial HospitalManchester · 65 sites	Parent on file	240	498	Decision makers
21	Middlesex HealthMiddletown · 22 sites	Parent on file	232	388	Decision makers
22	Charlotte Hungerford HospitalTorrington · 17 sites	Parent on file	224	422	Decision makers
23	Hartford HealthCare Medical GroupTorrington · 35 sites	Parent on file	190	311	Decision makers
24	Connecticut GIHartford · 66 sites	Parent on file	180	394	Decision makers
25	Windham HospitalWillimantic · 5 sites	Parent on file	176	323	Decision makers
26	Cornell Scott-Hill Health CenterNew Haven · 31 sites	Parent on file	168	449	Decision makers
27	Greenwich HospitalGreenwich · 11 sites	Parent on file	162	253	Decision makers
28	Bridgeport HospitalBridgeport · 13 sites	Parent on file	156	263	Decision makers
29	Bristol Health Medical GroupBristol · 19 sites	Parent on file	135	231	Decision makers
30	Danbury HospitalDanbury · 17 sites	Parent on file	116	182	Decision makers
31	Griffin Faculty PhysiciansDerby · 22 sites	Parent on file	111	235	Decision makers
32	Danbury Medical GroupDanbury · 112 sites	Parent on file	111	155	Decision makers
33	Jefferson RadiologyWethersfield · 88 sites	Parent on file	111	124	Decision makers
34	Jefferson RadiologyWethersfield · 78 sites	Parent on file	103	119	Decision makers
35	Jefferson Radiology (Farmington Imaging Center)Farmington · 45 sites	Parent on file	98	110	Decision makers
36	Tolland Imaging CenterTolland · 36 sites	Parent on file	96	107	Decision makers
37	Natchaug HospitalMansfield Center · 2 sites	Parent on file	95	183	Decision makers
38	Orthopedic Associates of HartfordHartford · 33 sites	-	90	304	Decision makers
39	Middlesex HealthMiddletown · 31 sites	Parent on file	87	236	Decision makers
40	Northeast Emergency Medicine SpecialistsWillimantic · 13 sites	Parent on file	83	142	Decision makers
41	Day Kimball Medical GroupPutnam · 16 sites	Parent on file	83	138	Decision makers
42	Norwalk HospitalNorwalk · 5 sites	Parent on file	83	130	Decision makers
43	Northeast Emergency Medicine Specialists (NEMS)Meriden · 16 sites	Parent on file	78	135	Decision makers
44	McLeanSimsbury · 14 sites	Parent on file	76	101	Decision makers
45	Physicians Alliance of Connecticut (PACT)Branford · 21 sites	-	75	171	Decision makers
46	Optimus Health CareBridgeport · 15 sites	Parent on file	72	156	Decision makers
47	Emergency Physicians of ConnecticutWaterbury · 12 sites	-	70	124	Decision makers
48	Midstate Radiology Associates, LLCWallingford · 19 sites	-	68	81	Decision makers
49	Connecticut OrthopaedicsWallingford · 23 sites	-	65	201	Decision makers
50	Midstate Radiology AssociatesWallingford · 9 sites	-	65	79	Decision makers

Showing 1 to 10 of 1,291 medical groups in Connecticut

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

Hartford HealthCare has the most physicians in Connecticut medical groups, with 2,668 across 36 groups

Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 47 parent organizations have two or more Connecticut medical groups. Each clinician counts once per parent organization.

Parent organizations with the most Connecticut medical groups
#	Parent organization	Connecticut groups	Physicians	HCPs
1	Hartford HealthCareHealth system	36	2,668	5,909
2	Yale New Haven Health SystemAcademic health system	14	1,388	2,653
3	UnitedHealth GroupDiversified health company	6	843	1,639
4	Trinity HealthHealth system	17	753	1,263
5	State of ConnecticutState government	6	730	1,493
6	Stamford HealthHealth system	8	422	652
7	Middlesex Health SystemHealth system	5	307	595
8	Unified Women's HealthcarePhysician practice platform	2	261	400
9	Northwell HealthHealth system	3	151	248
10	Griffin HospitalHealth system	4	145	323

Top 10 of 47 parent organizations with two or more Connecticut groups

Hartford HealthCareHealth system · 36 Connecticut medical groups
Hartford HealthCare Medical Group SpecialistsMulti-specialty group · Wethersfield
Hartford HospitalMulti-specialty group · Hartford
34 more Connecticut groups and their practice sites

See every medical group, site and clinician under Hartford HealthCare

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

Try for free

Source: Dmand AI Org Hierarchy Data

For sales teams

Find the decision makers at Connecticut medical groups

Dmand AI maps the owners, administrators and physician leaders at each of the 1,291 Connecticut medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.

Try for free Book a meeting

71% of Connecticut 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.

Connecticut medical groups by ownership

Independent92271%
Health system or hospital1068%
Platform or corporate owner1229%
Community or government796%
Other organization625%

Source: Dmand AI Org Hierarchy Data

186 Connecticut 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 Connecticut, with 344

Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 328, and 201 Connecticut groups are multi-specialty.

Source: Dmand AI Professional Profile Data

26,685 Connecticut HCPs work in Connecticut medical groups, 11,051 of them physicians

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

HCPs in Connecticut medical groups by type

Physicians (MD, DO)11,05141%
Nurses and nurse practitioners5,07719%
Behavioral health clinicians4,66417%
Physician assistants3,08412%
Therapists (PT and OT)1,2105%
Other HCPs1,5996%

Source: Dmand AI Affiliation Data

Waterbury has the most medical groups in Connecticut, with 42

42medical groups in Waterbury 40medical groups in Hartford 40medical groups in West Hartford 39medical groups in Stamford 38medical groups in Wallingford 37medical groups in Bridgeport

More Connecticut cities with medical groups

Source: Doctors and Clinicians National Downloadable File (CMS)

Each Connecticut 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

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

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

Sources for the Connecticut 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 Connecticut

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 Connecticut?

There are 1,291 medical groups in Connecticut with a Medicare PAC ID: 201 multi-specialty and 1,090 single-specialty.

What is the largest medical group in Connecticut?

Yale Health in New Haven, with 2,233 physicians and 3,737 HCPs with a Connecticut address. Hartford HealthCare Medical Group Specialists is second with 1,128, and Northeast Medical Group is third with 1,047.

Which health system has the most medical groups in Connecticut?

By physicians, Hartford HealthCare, with 2,668 across 36 groups, followed by Yale New Haven Health System with 1,388 and UnitedHealth Group with 843.

How many Connecticut medical groups are independent?

922, or 71%, have no larger parent organization in the Dmand AI org hierarchy. 106 belong to a health system or hospital and 122 to a physician platform or corporate owner.

How many Connecticut medical groups practice at a hospital?

186 Connecticut 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 Connecticut 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.

Dmand AI

Find the right contacts at every Connecticut medical group

Search 1,291 groups by specialty, size and parent organization, with the physicians and leaders at each one.

Start free trial Book a demo

30 days free
Self-serve
No credit card