Frederick J. Dumas, M.D.
Internal Medicine Physician · Mendocino, CA
Frederick J. Dumas, M.D. is an internal medicine physician with a practice address in Mendocino, California, and NPI 1639268782, issued on Oct 12, 2006. Check the license (California A32054, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Frederick J. Dumas
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A32054 CA
Self-reported in NPPES; status is on the state search - Practice location
- 940 Ukiah St., Mendocino, CA 95460
- Phone
- (707) 937-4202
- Enumerated
- Oct 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 937-6003
- Entity
- Type 1 · individual
Verify Frederick J. Dumas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A32054Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3 internal medicine physician records list a practice address in Mendocino
They are 3 of the 40 NPPES records with a practice address in Mendocino, and 17,696 internal medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3 in Mendocino → All 17,696 in California → Every provider in Mendocino →
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- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
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- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Frederick J. Dumas, M.D.'s NPI number?
Frederick J. Dumas, M.D.'s National Provider Identifier (NPI) is 1639268782, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick J. Dumas, M.D. located?
The NPPES record lists a practice address at 940 Ukiah St., Mendocino, CA, 95460. Phone: (707) 937-4202. Providers update this record themselves, so call before visiting.
How can I verify Frederick J. Dumas, M.D.'s license?
NPPES lists California license number A32054, 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.