Thomas Scott Duncan, MD
Family Medicine Physician · Astoria, OR
Thomas Scott Duncan, MD is a family medicine physician with a practice address in Astoria, Oregon, and NPI 1093770893, issued on Apr 18, 2006. Check the license (Oregon MD09168, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Scott Duncan
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD09168 OR
Self-reported in NPPES; status is on the state search - Practice location
- 595 18TH St, Astoria, OR 97103
- Phone
- (503) 325-9131
- Enumerated
- Apr 18, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (503) 325-8797
- Medicaid ID
- 048140 OR
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 595 18TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Skinner, CNM CFNPNurse Practitioner1093779928
Verify Thomas Scott Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD09168Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family medicine physician in 2024
332 Medicare Part D claims for 22 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Potassium Chloride29 claims
- Eliquis26 claims
- Atorvastatin Calcium25 claims
- Levothyroxine Sodium24 claims
- Gabapentin18 claims
- Ropinirole Hcl16 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.
Thomas Scott Duncan among 2,847 family medicine physician records in Oregon
Thomas Scott Duncan, MD is one of 2,847 family medicine physician records with a practice address in Oregon. 75% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 53% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2026 · 57% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 family medicine physician records list a practice address in Astoria
They are 9 of the 492 NPPES records with a practice address in Astoria, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Astoria → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Scott Ashley, MDAstoria, OR 971031912076431
- Kevin Baxter, D.O.Astoria, OR 971031780681080
- Alix Cooper, MDAstoria, OR 971031588292445
- Keith Klatt, MDAstoria, OR 971031518980044
- Mihaela LeboAstoria, OR 971031104786193
- Roy Little, M.D.Astoria, OR 971031316979446
- Angela Nairn, MDAstoria, OR 971031417909094
- Patience Pine, MDAstoria, OR 971031508360934
Common questions
What is Thomas Scott Duncan, MD's NPI number?
Thomas Scott Duncan, MD's National Provider Identifier (NPI) is 1093770893, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Scott Duncan, MD located?
The NPPES record lists a practice address at 595 18TH St, Astoria, OR, 97103. Phone: (503) 325-9131. Providers update this record themselves, so call before visiting.
How can I verify Thomas Scott Duncan, MD's license?
NPPES lists Oregon license number MD09168, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas Scott Duncan, MD prescribe under Medicare Part D?
In 2024, Thomas Scott Duncan, MD had 332 Medicare Part D claims for 22 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.