Largest cardiology groups in California
- Groups
- 25
- Thoracic Surgery (Cardiothoracic Vascular Surgery) groups
- 25
- Thoracic surgery (cardiothoracic vascular surgery) specialists
- 78
- Physicians
- 101
- More than one site
- 11
There are 25 cardiology groups in California with a Medicare PAC ID. Synergy Cardiothoracic (CT) Surgery Partnership is the largest, with 17 physicians.
Find the decision makers at all 25 California cardiology groups
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Synergy Cardiothoracic (CT) Surgery Partnership is the largest cardiology group in California, with 17 physicians
Ranked by physicians with a California address linked to each group. UCLA Cardiothoracic Surgery Associates is second with 13, and Orange County Thoracic and Cardiovascular Surgeons third with 11.
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Sort and filter all 25 California cardiology groups by city, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 25 cardiology groups in California
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
University of California Health has the most physicians in California cardiology groups, with 20 across 2 groups
Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 1 parent organizations have two or more California cardiology groups. Each clinician counts once per parent organization.
- University of California Health
- UCLA Cardiothoracic Surgery Associates
- UCLA Health
See every medical group, site and clinician under University of California Health
Org Hierarchy Explorer maps every group, site of care and clinician under the parent, with the leaders at each group.
Source: Dmand AI Org Hierarchy Data
For sales teams
Dmand AI maps the owners, administrators and physician leaders at each of the 25 California cardiology groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
72% of California cardiology 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.
California cardiology groups by ownership
- Independent18
- Health system or hospital5
- Platform or corporate owner1
- Other organization1
Sites of care beyond their own offices
See the parent organization above every California group
Dmand AI maps each group to the health system, physician platform or management company above it, so you can sell to the owner, not one site.
Source: Dmand AI Org Hierarchy Data
4 California cardiology groups practice at a hospital site
Sites of care linked to each group in the org hierarchy, beyond its own offices. A group can practice at several kinds of site.
California cardiology groups by site of care
- Hospitals4
Clinicians in California cardiology groups
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Los Angeles has the most cardiology groups in California, with 4
More California cities with cardiology groups
- Glendale1
- Huntington Beach1
- Irvine1
- Lakewood1
- North Hollywood1
- Northridge1
- Oakland1
- Orange1
- Pismo Beach1
- Rancho Cucamonga1
- San Diego1
- Santa Rosa1
- Upland1
- Ventura1
- Winnetka1
Source: Doctors and Clinicians National Downloadable File (CMS)
Each California cardiology 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 California cardiology group list
| 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 inaccuracyRemove my information
Groups whose main specialty is cardiology and that have a Medicare PAC ID.
FAQ
Frequently asked questions about cardiology groups in California
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
How many cardiology groups are in California?
There are 25 cardiology groups in California with a Medicare PAC ID. Between them they have 78 thoracic surgery (cardiothoracic vascular surgery) specialists.
How many California cardiology groups are independent?
18, or 72%, have no larger parent organization in the Dmand AI org hierarchy. 5 belong to a health system or hospital and 1 to a physician platform or corporate owner.
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