Matthew Winfred Duncan, M.D.
Legal Medicine · San Jose, CA
Matthew Winfred Duncan, M.D. is a legal medicine with a practice address in San Jose, California, and NPI 1023137916, issued on Mar 29, 2007. Check the license (California C32967, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Winfred Duncan
- Credential
- M.D.
- Primary taxonomy
- Legal Medicine 173000000X
- License number
- C32967 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1101 S Winchester Blvd, San Jose, CA 95128
- Phone
- (408) 248-5665
- Enumerated
- Mar 29, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (408) 248-5224
- Entity
- Type 1 · individual
8 nearest legal medicine records → All 112 in California → Look up another NPI →
Also registered at 1101 S Winchester Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Winfred Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license C32967Check 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: $64.55
3 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 144 providers of this specialty with any payment received $4,618.84 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.
Matthew Winfred Duncan among 112 legal medicine records in California
Matthew Winfred Duncan, M.D. is one of 112 legal medicine records with a practice address in California. 42% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 57% of them.
- NPI issued2007 · 57% of these records are older, 19% newer
- In a Medicare fileYes · 42% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2007 · 86% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 173000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Legal Medicine providers in California
There are 112 legal medicine records in California.
All 112 in California → Every provider in San Jose → Legal Medicine nationwide →
The 8 legal medicine records with the nearest ZIP codes
- Mark Campbell, M.D.San Jose, CA 951281457339988
- Prasanna Krishnamshetty, M.DSan Jose, CA 951161992760763
- Trach Dang, M.D.San Jose, CA 951121215959796
- Paul Quintana, M.D.Saratoga, CA 950701114024130
- Jonathan Cress, M.D.Santa Cruz, CA 950621104857572
- Suzanne Patenaude, PT, MA CIEMorgan Hill, CA 950371750591624
- Daniel Martinez, M.D.Milpitas, CA 950351740200989
- W. Silva, M.D.Los Gatos, CA 950321194744292
Common questions
What is Matthew Winfred Duncan, M.D.'s NPI number?
Matthew Winfred Duncan, M.D.'s National Provider Identifier (NPI) is 1023137916, issued on Mar 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Winfred Duncan, M.D. located?
The NPPES record lists a practice address at 1101 S Winchester Blvd, San Jose, CA, 95128. Phone: (408) 248-5665. Providers update this record themselves, so call before visiting.
How can I verify Matthew Winfred Duncan, M.D.'s license?
NPPES lists California license number C32967, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.