Douglas Barrie Duncan, M.D.
Family Medicine Physician · Santa Barbara, CA
Douglas Barrie Duncan, M.D. is a family medicine physician with a practice address in Santa Barbara, California, and NPI 1932219086, issued on Aug 30, 2006. Check the license (California C39970, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Douglas Barrie Duncan
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- C39970 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 N LA Cumbre RD, Santa Barbara, CA 93110
- Phone
- (805) 682-9232
- Enumerated
- Aug 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (805) 682-0617
- Medicare enrollment
- Enrolled (PECOS I20050408000488); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At San Antonio, 1980
- Entity
- Type 1 · individual
Also registered at 200 N LA Cumbre RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Nunez, D.D.SGeneral Practice Dentistry1396967048
Verify Douglas Barrie Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C39970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average family medicine physician in 2024
2,254 Medicare Part D claims for 153 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 25 claims were for opioids.
Most prescribed
- Atorvastatin Calcium146 claims
- Gabapentin111 claims
- Omeprazole70 claims
- Metoprolol Succinate69 claims
- Trulicity69 claims
- Nifedipine Er66 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Santa Barbara County AuditorSanta Barbara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
90 family medicine physician records list a practice address in Santa Barbara
They are 90 of the 5,328 NPPES records with a practice address in Santa Barbara, and 17,133 family medicine physician records in California.
All 90 in Santa Barbara → All 17,133 in California → Every provider in Santa Barbara →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is Douglas Barrie Duncan, M.D.'s NPI number?
Douglas Barrie Duncan, M.D.'s National Provider Identifier (NPI) is 1932219086, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Barrie Duncan, M.D. located?
The NPPES record lists a practice address at 200 N LA Cumbre RD, Santa Barbara, CA, 93110. Phone: (805) 682-9232. Providers update this record themselves, so call before visiting.
How can I verify Douglas Barrie Duncan, M.D.'s license?
NPPES lists California license number C39970, 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.
How much does Douglas Barrie Duncan, M.D. prescribe under Medicare Part D?
In 2024, Douglas Barrie Duncan, M.D. had 2,254 Medicare Part D claims for 153 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.