Largest OB/GYN and women's health groups in California
- Groups
- 186
- Obstetrics and Gynecology groups
- 179
- Advanced Practice Midwife groups
- 7
- OB-GYNs
- 773
- Advanced practice midwife specialists
- 17
There are 186 OB/GYN and women's health groups in California with a Medicare PAC ID: 179 obstetrics and gynecology and 7 advanced practice midwife. OB/GYN University Associates is the largest obstetrics and gynecology group, with 112 OB-GYNs, and MCHC Health Centers the largest advanced practice midwife group, with 10 advanced practice midwife specialists.
Find the decision makers at all 186 California OB/GYN and women's health groups
Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.
UCI Health Family Health Center, Anaheim is the largest OB/GYN and women's health group in California, with 214 physicians
Ranked by physicians with a California address linked to each group. OB/GYN University Associates is second with 115, and UCLA Health Westwood OBGYN third with 82. 2 California groups have 100 or more physicians.
Filter this list with a free account
Sort and filter all 186 California OB/GYN and women's health groups by city, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 50 of 186 OB/GYN and women's health groups in California
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
OB/GYN University Associates is the largest obstetrics and gynecology group in California, with 112 OB-GYNs
Ranked by OB-GYNs with a California address linked to each group whose main sub-specialty is obstetrics and gynecology. UCLA Health Westwood OBGYN is second with 78, and UCI Health Family Health Center, Anaheim third with 73.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
MCHC Health Centers is the largest advanced practice midwife group in California, with 10 advanced practice midwife specialists
Ranked by advanced practice midwife specialists with a California address linked to each group whose main sub-specialty is advanced practice midwife. Redwood Women's Center is second with 4, and Caring for Women third with 2. Four of the five are independent.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
UC Irvine has the most physicians in California OB/GYN and women's health groups, with 256 across 2 groups
Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 4 parent organizations have two or more California OB/GYN and women's health groups. Each clinician counts once per parent organization.
See every medical group, site and clinician under UC Irvine
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 186 California OB/GYN and women's health groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
82% of California OB/GYN and women's health 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 OB/GYN and women's health groups by ownership
- Independent152
- Health system or hospital11
- Platform or corporate owner9
- Community or government7
- Other organization7
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
20 California OB/GYN and women's health groups practice at a hospital site, and 11 at an FQHC
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 OB/GYN and women's health groups by site of care
- Hospitals20
- FQHCs11
- Ambulatory surgery centers6
- Rural health clinics4
- Skilled nursing facilities2
- Behavioral health facilities1
Clinicians in California OB/GYN and women's health groups
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Los Angeles has the most OB/GYN and women's health groups in California, with 17
More California cities with OB/GYN and women's health groups
- Anaheim3
- Apple Valley3
- Beverly Hills3
- Chula Vista3
- Corona3
- Downey3
- Fountain Valley3
- Murrieta3
- Riverside3
- Upland3
- Arcadia2
- Bakersfield2
- Barstow2
- Colton2
- Garden Grove2
Source: Doctors and Clinicians National Downloadable File (CMS)
Each California OB/GYN and women's health 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 OB/GYN and women's health 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 OB/GYN and women's health and that have a Medicare PAC ID.
FAQ
Frequently asked questions about OB/GYN and women's health 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.
What is the largest obstetrics and gynecology group in California?
OB/GYN University Associates, based in Orange, with 112 OB-GYNs and 145 HCPs. UCLA Health Westwood OBGYN is second with 78.
What is the largest advanced practice midwife group in California?
MCHC Health Centers, based in Ukiah, with 10 advanced practice midwife specialists and 121 HCPs. Redwood Women's Center is second with 4.
How many OB/GYN and women's health groups are in California?
There are 186 OB/GYN and women's health groups in California with a Medicare PAC ID: 179 obstetrics and gynecology and 7 advanced practice midwife. Between them they have 773 OB-GYNs and 17 advanced practice midwife specialists.
Which companies own the most OB/GYN and women's health groups?
By physicians, UC Irvine, with 256 across 2 groups, followed by University of California Health with 83 and Planned Parenthood Federation of America with 59.
How many California OB/GYN and women's health groups are independent?
152, or 82%, have no larger parent organization in the Dmand AI org hierarchy. 11 belong to a health system or hospital and 9 to a physician platform or corporate owner.
Why are ob/gyn and women's health listed together?
They share one specialty category in the Dmand AI medical group data. This page also ranks each sub-specialty on its own, by its own specialists.
Dmand AI
Find the right contacts at every California OB/GYN and women's health group
Search 186 groups by size and parent organization, with the physicians and leaders at each one.
- 30 days free
- Self-serve
- No credit card