Medical groups in Simi Valley, CA
- Medical groups
- 31
- Multi-specialty
- 5
- Single-specialty
- 26
- More than one site
- 11
There are 31 medical groups in Simi Valley with a Medicare PAC ID. Simi Valley Anesthesia Medical Group is the largest, with 33 California physicians, followed by Adventist Health Simi Valley Medical Center with 23. 87% of Simi Valley groups are independent.
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Simi Valley Anesthesia Medical Group is the largest medical group in Simi Valley, with 33 physicians
Ranked by physicians with a California address linked to each group based in Simi Valley. Adventist Health Simi Valley Medical Center is second with 23, and Allied Emergency Physicians third with 22.
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Showing 1 to 10 of 31 medical groups in Simi Valley
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
87% of Simi Valley 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.
Simi Valley medical groups by ownership
- Independent27
- Health system or hospital2
- Platform or corporate owner1
- Other organization1
Source: Dmand AI Org Hierarchy Data
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Dmand AI maps the owners, administrators and physician leaders at each of the 31 Simi Valley medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
6 Simi Valley 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.
Simi Valley medical groups by site of care
- Hospitals6
- Ambulatory surgery centers1
- Therapy and rehab centers1
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Primary care groups are the most common medical groups in Simi Valley, with 13
Each group is counted once, under its main specialty. Emergency and hospital medicine groups are second, with 3, and 5 Simi Valley groups are multi-specialty.
- Primary care13
- Emergency and hospital medicine3
- ENT and audiology3
- Eye care2
- Rehabilitation and therapy2
- Anesthesia and pain1
- Behavioral and mental health1
- Chiropractic1
- Dental and oral surgery1
- Dermatology1
- OB/GYN and women's health1
- Pathology and laboratory1
- Radiology and imaging1
Source: Dmand AI Professional Profile Data
257 California HCPs work in Simi Valley medical groups, 142 of them physicians
Each clinician is counted once, across every Simi Valley group they are linked to. Only clinicians with a California address are counted.
HCPs in Simi Valley medical groups by type
- Physicians (MD, DO)142
- Nurses and nurse practitioners39
- Physician assistants36
- Speech therapists and audiologists13
- Therapists (PT and OT)11
- Other HCPs16
Source: Dmand AI Affiliation Data
Each Simi Valley 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 Simi Valley 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 Simi Valley with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Simi Valley
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 Simi Valley?
There are 31 medical groups based in Simi Valley with a Medicare PAC ID: 5 multi-specialty and 26 single-specialty. 11 of them have more than one site.
What is the largest medical group in Simi Valley?
Simi Valley Anesthesia Medical Group, with 33 physicians and 35 HCPs with a California address. Adventist Health Simi Valley Medical Center is second with 23, and Allied Emergency Physicians is third with 22.
How many Simi Valley medical groups are independent?
27, or 87%, have no larger parent organization in the Dmand AI org hierarchy. 2 belong to a health system or hospital and 1 to a physician platform or corporate owner.
How many Simi Valley medical groups practice at a hospital?
6 Simi Valley 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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