Medical groups in Los Alamitos, CA
- Medical groups
- 41
- Multi-specialty
- 5
- Single-specialty
- 36
- More than one site
- 19
- 100+ physicians
- 1
There are 41 medical groups in Los Alamitos with a Medicare PAC ID. OptumCare Medical Group is the largest, with 194 California physicians, followed by Los Alamitos Radiology Group with 79. 80% of Los Alamitos groups are independent.
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OptumCare Medical Group is the largest medical group in Los Alamitos, with 194 physicians
Ranked by physicians with a California address linked to each group based in Los Alamitos. Los Alamitos Radiology Group is second with 79, and Talbert Anesthesia Group third with 62. 1 Los Alamitos group has 100 or more physicians.
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Sort and filter all 41 Los Alamitos medical groups by specialty, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 41 medical groups in Los Alamitos
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
80% of Los Alamitos 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.
Los Alamitos medical groups by ownership
- Independent33
- Health system or hospital1
- Platform or corporate owner5
- Other organization2
Source: Dmand AI Org Hierarchy Data
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Dmand AI maps the owners, administrators and physician leaders at each of the 41 Los Alamitos medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
7 Los Alamitos 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.
Los Alamitos medical groups by site of care
- Hospitals7
- Ambulatory surgery centers2
- Skilled nursing facilities1
- Therapy and rehab centers1
- Dialysis centers1
- Behavioral health facilities1
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Primary care groups are the most common medical groups in Los Alamitos, with 15
Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 4, and 5 Los Alamitos groups are multi-specialty.
- Primary care15
- Behavioral and mental health4
- Rehabilitation and therapy4
- Anesthesia and pain2
- Eye care2
- Orthopedics and sports medicine2
- Podiatry2
- Urology and nephrology2
- Chiropractic1
- Dermatology1
- Emergency and hospital medicine1
- ENT and audiology1
- Pathology and laboratory1
- Radiology and imaging1
- Rheumatology, allergy and immunology1
- General and specialty surgery1
Source: Dmand AI Professional Profile Data
614 California HCPs work in Los Alamitos medical groups, 430 of them physicians
Each clinician is counted once, across every Los Alamitos group they are linked to. Only clinicians with a California address are counted.
HCPs in Los Alamitos medical groups by type
- Physicians (MD, DO)430
- Nurses and nurse practitioners63
- Physician assistants50
- Therapists (PT and OT)30
- Behavioral health clinicians9
- Other HCPs32
Source: Dmand AI Affiliation Data
Each Los Alamitos 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 Los Alamitos medical group directory
| 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
The directory lists groups based in Los Alamitos with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Los Alamitos
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 Los Alamitos?
There are 41 medical groups based in Los Alamitos with a Medicare PAC ID: 5 multi-specialty and 36 single-specialty. 19 of them have more than one site.
What is the largest medical group in Los Alamitos?
OptumCare Medical Group, with 194 physicians and 286 HCPs with a California address. Los Alamitos Radiology Group is second with 79, and Talbert Anesthesia Group is third with 62.
How many Los Alamitos medical groups are independent?
33, or 80%, have no larger parent organization in the Dmand AI org hierarchy. 1 belong to a health system or hospital and 5 to a physician platform or corporate owner.
How many Los Alamitos medical groups practice at a hospital?
7 Los Alamitos 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.
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