Medical groups in Lancaster, CA
- Medical groups
- 48
- Multi-specialty
- 14
- Single-specialty
- 34
- More than one site
- 24
There are 48 medical groups in Lancaster with a Medicare PAC ID. High Desert Medical Group is the largest, with 61 California physicians, followed by Bartz-Altadonna Community Health Center with 43. 75% of Lancaster groups are independent.
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Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.
High Desert Medical Group is the largest medical group in Lancaster, with 61 physicians
Ranked by physicians with a California address linked to each group based in Lancaster. Bartz-Altadonna Community Health Center is second with 43, and Antelope Valley Emergency Medical Associates third with 29.
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Sort and filter all 48 Lancaster medical groups by specialty, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 48 medical groups in Lancaster
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Heritage Physician Networks has the most physicians in Lancaster medical groups, with 75 across 3 groups
Dmand AI maps every Lancaster medical group to its parent organization, up to the health system or platform at the top. 2 parent organizations have two or more Lancaster medical groups. Among health systems, Antelope Valley Healthcare District has the most groups, 2. Each clinician counts once per parent organization.
- Heritage Physician Networks
- High Desert Medical Group
- Sierra Medical Group
- 1 more Lancaster groups and their practice sites
See every medical group, site and clinician under Heritage Physician Networks
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
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Dmand AI maps the owners, administrators and physician leaders at each of the 48 Lancaster medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
75% of Lancaster 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.
Lancaster medical groups by ownership
- Independent36
- Health system or hospital2
- Platform or corporate owner2
- Community or government2
- Other organization6
Source: Dmand AI Org Hierarchy Data
7 Lancaster 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.
Lancaster medical groups by site of care
- Hospitals7
- Ambulatory surgery centers3
- Therapy and rehab centers2
- Skilled nursing facilities1
- FQHCs1
- 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 Lancaster, with 21
Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 5, and 14 Lancaster groups are multi-specialty.
- Primary care21
- Behavioral and mental health5
- Rehabilitation and therapy5
- Chiropractic4
- Anesthesia and pain2
- Emergency and hospital medicine2
- Eye care2
- Pediatrics2
- Dermatology1
- Neurology and neurosurgery1
- Orthopedics and sports medicine1
- Pathology and laboratory1
- Radiology and imaging1
Source: Dmand AI Professional Profile Data
577 California HCPs work in Lancaster medical groups, 288 of them physicians
Each clinician is counted once, across every Lancaster group they are linked to. Only clinicians with a California address are counted.
HCPs in Lancaster medical groups by type
- Physicians (MD, DO)288
- Nurses and nurse practitioners102
- Physician assistants53
- Behavioral health clinicians40
- Non-clinical and support staff21
- Other HCPs73
Source: Dmand AI Affiliation Data
Each Lancaster 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 Lancaster 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 Lancaster with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Lancaster
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 Lancaster?
There are 48 medical groups based in Lancaster with a Medicare PAC ID: 14 multi-specialty and 34 single-specialty. 24 of them have more than one site.
What is the largest medical group in Lancaster?
High Desert Medical Group, with 61 physicians and 128 HCPs with a California address. Bartz-Altadonna Community Health Center is second with 43, and Antelope Valley Emergency Medical Associates is third with 29.
Which health system has the most medical groups in Lancaster?
By physicians, Heritage Physician Networks, with 75 across 3 groups, followed by Antelope Valley Healthcare District with 25.
How many Lancaster medical groups are independent?
36, or 75%, have no larger parent organization in the Dmand AI org hierarchy. 2 belong to a health system or hospital and 2 to a physician platform or corporate owner.
How many Lancaster medical groups practice at a hospital?
7 Lancaster 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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