NPPES file of Aug 9, 2026

Farrell C. Barnett, M.D.

Internal Medicine Physician · Oakland, CA

Farrell C. Barnett, M.D. is an internal medicine physician with a practice address in Oakland, California, and NPI 1639391170, issued on May 3, 2007. Check the license (California C050042, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639391170
Name
Farrell C. Barnett
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
C050042 CA
Self-reported in NPPES; status is on the state search
Practice location
6955 Foothill Blvd, Oakland, CA 94605
Phone
(510) 304-6045
Enumerated
May 3, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(510) 839-7918
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 6955 Foothill Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jan Attia, RNCommunity Health Registered Nurse1881907244
  2. Allison Austin, FNPFamily Nurse Practitioner1245368570
  3. Elizabeth BrighinaSocial Worker1720790272
  4. Maria Clara Calayag, M.D.Pediatrics Physician1538295076
  5. Cherie Campbell-FrenchSocial Worker1568647600
  6. Harjeet Chauhan, RN, PHNRegistered Nurse1306723481

Verify Farrell C. Barnett in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C050042
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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432 internal medicine physician records list a practice address in Oakland

They are 432 of the 18,558 NPPES records with a practice address in Oakland, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other internal medicine physician records in California

  1. Jacob Aaron, MDSan Francisco, CA1407202518
  2. Alistair Aaronson, MDStanford, CA1457628760
  3. Jose Abad., MDSacramento, CA1144607219
  4. Donna Abare, MDOakland, CA1386722155
  5. Marce AbareScotts Valley, CA1457744708
  6. Samuel Abarte, M.D.Chula Vista, CA1578535498
  7. Alexander Abary, MDLong Beach, CA1104995919
  8. Luba Abascal, MDSan Francisco, CA1023180874
  9. Michael Abate, MDSacramento, CA1548248131
  10. Wali Abawi, D.O.Joshua Tree, CA1104362268

Common questions

What is Farrell C. Barnett, M.D.'s NPI number?

Farrell C. Barnett, M.D.'s National Provider Identifier (NPI) is 1639391170, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Farrell C. Barnett, M.D. located?

The NPPES record lists a practice address at 6955 Foothill Blvd, Oakland, CA, 94605. Phone: (510) 304-6045. Providers update this record themselves, so call before visiting.

How can I verify Farrell C. Barnett, M.D.'s license?

NPPES lists California license number C050042, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.