David Alan Duncan, D.O.
Family Medicine Physician · Dublin, CA
David Alan Duncan, D.O. is a family medicine physician with a practice address in Dublin, California, and NPI 1710967922, issued on Jan 23, 2006. Check the license (California 20A15980, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Alan Duncan
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 20A15980 CA
02002571A IN
Self-reported in NPPES; status is on the state search - Practice location
- Fci Dublin, Dublin, CA 94568
- Phone
- (925) 833-7500
- Enumerated
- Jan 23, 2006
- Record last updated
- Sep 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20250919002791); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify David Alan Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15980Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $34.11
2 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- American Current Care OF California A Medical CorporationSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Alan Duncan among 17,133 family medicine physician records in California
David Alan Duncan, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2011 · median 2005 among the 10,652 with a school on file
- Record last updated2020 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 family medicine physician records list a practice address in Dublin
They are 19 of the 2,148 NPPES records with a practice address in Dublin, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Dublin → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- George Besser, D.O.Dublin, CA 945681962581454
- William DavisDublin, CA 945681043360860
- Brea Fisher, MDDublin, CA 945681851570360
- Palliyath Neethi Gangadharan, MDDublin, CA 945681588812978
- Veena Jayaram-Chou, D.O.Dublin, CA 945681659320463
- Edmund Kemprud, M.D.Dublin, CA 945681659421469
- Jessica Kemprud, FN.P.Dublin, CA 945681225170244
- Paul Kim, MDDublin, CA 945681891936753
Common questions
What is David Alan Duncan, D.O.'s NPI number?
David Alan Duncan, D.O.'s National Provider Identifier (NPI) is 1710967922, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Alan Duncan, D.O. located?
The NPPES record lists a practice address at Fci Dublin, Dublin, CA, 94568. Phone: (925) 833-7500. Providers update this record themselves, so call before visiting.
How can I verify David Alan Duncan, D.O.'s license?
NPPES lists California license number 20A15980, 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. 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.