Largest rheumatology, allergy and immunology groups in California
- Groups
- 39
- Allergy and Immunology groups
- 39
- Allergists
- 122
- Physicians
- 158
- More than one site
- 23
There are 39 rheumatology, allergy and immunology groups in California with a Medicare PAC ID. Baz Allergy, Asthma & Sinus Center is the largest, with 19 physicians.
Find the decision makers at all 39 California rheumatology, allergy and immunology groups
Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.
Baz Allergy, Asthma & Sinus Center is the largest rheumatology, allergy and immunology group in California, with 19 physicians
Ranked by physicians with a California address linked to each group. Allergy & Asthma Medical Group of the Bay Area is second with 18, and OSO Home Care, Inc. third with 15.
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Sort and filter all 39 California rheumatology, allergy and immunology groups by city, parent organization, group size, EHR in use and decision makers in Dmand AI.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Modena Allergy + Asthma has the most physicians in California rheumatology, allergy and immunology groups, with 14 across 3 groups
Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 2 parent organizations have two or more California rheumatology, allergy and immunology groups. Each clinician counts once per parent organization.
See every medical group, site and clinician under Modena Allergy + Asthma
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 39 California rheumatology, allergy and immunology groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
74% of California rheumatology, allergy and immunology 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 rheumatology, allergy and immunology groups by ownership
- Independent29
- Health system or hospital2
- Platform or corporate owner6
- Other organization2
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
1 California rheumatology, allergy and immunology groups practice at an FQHC 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 rheumatology, allergy and immunology groups by site of care
- FQHCs1
Clinicians in California rheumatology, allergy and immunology groups
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Glendale has the most rheumatology, allergy and immunology groups in California, with 2
More California cities with rheumatology, allergy and immunology groups
- Torrance2
- Vista2
- Bakersfield1
- Fresno1
- Greenbrae1
- Irvine1
- La Jolla1
- La Mirada1
- Laguna Niguel1
- Los Alamitos1
- Manhattan Beach1
- Napa1
- Norwalk1
- Orange1
- Pasadena1
Source: Doctors and Clinicians National Downloadable File (CMS)
Each California rheumatology, allergy and immunology 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 rheumatology, allergy and immunology 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 rheumatology, allergy and immunology and that have a Medicare PAC ID.
FAQ
Frequently asked questions about rheumatology, allergy and immunology 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 rheumatology, allergy and immunology groups are in California?
There are 39 rheumatology, allergy and immunology groups in California with a Medicare PAC ID. Between them they have 122 allergists.
Which companies own the most rheumatology, allergy and immunology groups?
By physicians, Modena Allergy + Asthma, with 14 across 3 groups, followed by Allergy Partners with 11.
How many California rheumatology, allergy and immunology groups are independent?
29, or 74%, have no larger parent organization in the Dmand AI org hierarchy. 2 belong to a health system or hospital and 6 to a physician platform or corporate owner.
Why are rheumatology, allergy and immunology listed together?
They share one specialty category in the Dmand AI medical group data. Each group is listed under its main specialty.
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