Internists in Fairfield, CA
- Internists
- 52
- Linked to a hospital or group
- 43
- Hospitals with an internist
- 19
- Medical groups with an internist
- 23
- Practice at a hospital
- 38
There are 52 internists in Fairfield. NorthBay Medical Center has the most, 32, and NorthBay Medical Center has the most affiliated internists, 35. 15% finished medical school 30 or more years ago.
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Fairfield internists, listed A to Z by last name
Each internist on the list has internal medicine as their primary specialty and a Fairfield practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.
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Showing 1 to 10 of 46 Fairfield internists
The list shows the 46 internists with a public profile. The other 6 are counted in the total and searchable with a free account.
Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data
For health IT teams
Dmand AI has the EHR for 47 of 52 Fairfield internists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.
NorthBay Medical Center has the most internists in Fairfield, with 32
Sound Physicians is second with 17, and NorthBay Health third with 7. Counts are internists with a California address linked to each group.
Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data
NorthBay Medical Center has the most affiliated internists in Fairfield, with 35
Sutter Medical Center, Sacramento is second with 4, and Department of State Hospitals - Napa third with 3. Fairfield internists are affiliated with 19 hospitals in all.
See every hospital and group for each Fairfield internist
Each public profile names one place an internist practices. A free account shows all of them, with the employer, the EHR and validated contacts.
Source: Dmand AI Affiliation Data
Most Fairfield internists practice at a hospital: 38 of the 42 with a mapped site
19 also practice at a medical group site, and 13 at hospices. An internist can practice at several kinds of site, so the shares overlap.
Fairfield internists by site of care
- Hospitals38
- Medical group practices19
- Hospices13
- Home health agencies11
- FQHCs3
Sources: Dmand AI Affiliation Data and Dmand AI Practice Data
15% of Fairfield internists finished medical school 30 or more years ago
6 of the 41 Fairfield internists with a graduation year on file. 11 graduated in the last 10 years.
Physicians by years since medical school
- Under 10 years ago11
- 10 to 19 years ago12
- 20 to 29 years ago12
- 30 to 39 years ago4
- 40 or more years ago2
Source: Dmand AI Professional Profile Data
Every Fairfield internist profile shows current hospitals and groups, Medicare activity and NPI details
- Primary practiceThe main place they practice, with its type and cityOn every profile
- Every site of careEach hospital, clinic and group where they practice nowWith a free account
- EmployerThe organization they work for, when one is on fileWith a free account
- Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
- Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
- Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
- Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
- Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
- NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
- Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
- EHR in useThe EHR at each site where they practiceWith a free account
- Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account
Free account: 30 days free, self-serve, no credit card.
Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data
Sources for the Fairfield internist directory
| Data on this page | Source |
|---|---|
| HCPs, types and specialties | NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data |
| Sites of care, hospitals and medical groups | Dmand AI Affiliation Data |
| Medical school graduation year | Dmand AI Professional Profile Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
Internists are HCPs whose primary specialty is internal medicine (taxonomy code 207R00000X), with an active NPI and a Fairfield practice address.
FAQ
Frequently asked questions about internists in Fairfield
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
How many internists are in Fairfield?
52 internists have an active NPI, a Fairfield practice address and internal medicine (taxonomy code 207R00000X) as their primary specialty. 43 of them are linked to a hospital or medical group.
Which Fairfield medical groups have the most internists?
NorthBay Medical Center, with 32, followed by Sound Physicians with 17 and NorthBay Health with 7.
Which Fairfield hospitals have the most internists?
NorthBay Medical Center, with 35 affiliated internists, followed by Sutter Medical Center, Sacramento with 4 and Department of State Hospitals - Napa with 3.
What share of Fairfield internists practice at a hospital?
38 of the 42 Fairfield internists with a mapped site of care, or 90%, have a current hospital affiliation.
What is the taxonomy code for internal medicine?
207R00000X is the NPPES taxonomy code for internal medicine. Sub-specialties with their own code are counted on their own lists.
How can I contact internists in Fairfield?
Dmand AI finds validated work emails, mobile numbers and practice phone numbers for internists in Fairfield through healthcare waterfall enrichment, matched to the site where each one practices now. They are available with a free Dmand AI account: 30 days free, self-serve, no credit card.
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