Duncan James York, MD
Internal Medicine Physician · Portland, OR
Duncan James York, MD is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1184666471, issued on Jun 12, 2006. Check the license (Oregon MD26551, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Duncan James York
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD26551 OR
Self-reported in NPPES; status is on the state search - Practice location
- 10000 SE Main St, Portland, OR 97216
- Phone
- (503) 261-6985
- Enumerated
- Jun 12, 2006
- Record last updated
- Feb 4, 2022
- Fax
- (503) 261-6790
- Medicaid IDs
- 8456451 WA
247330 OR - Medicare enrollment
- Enrolled (PECOS I20061102000385); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 10000 SE Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Benjamin Balme, MDOrthopaedic Surgery Physician1013903905
- Jon Benson, PSY DPsychologist1952477424
- Alexis Bonfiglio, PA-CPhysician Assistant1912303504
- Peter Carty, MDInternal Medicine Physician1326004250
- Aaron Case, MDEmergency Medicine Physician1134495567
- Leon Colburn, PAPhysician Assistant1578565339
Verify Duncan James York in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD26551Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average internal medicine physician in 2024
465 Medicare Part D claims for 134 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 11 claims were for opioids.
Most prescribed
- Potassium Chloride30 claims
- Carvedilol22 claims
- Pantoprazole Sodium21 claims
- Atorvastatin Calcium19 claims
- Furosemide16 claims
- Losartan Potassium16 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
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Duncan James York among 2,116 internal medicine physician records in Oregon
Duncan James York, MD is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2003 · median 2008 among the 1,232 with a school on file
- Record last updated2022 · 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 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Peter Carty, MDPortland, OR 972161326004250
- Ellen Duplain, MDPortland, OR 972161225066301
- Elizabeth Ehrlich, MDPortland, OR 972161609069681
- Craig Foss, MDPortland, OR 972161720044654
- Jill Hansen, MDPortland, OR 972161518050459
- Philip McDaniel, M.D.Portland, OR 972161851327753
- Richard Mishler, MDPortland, OR 972161609832161
- Marc Moroye, MDPortland, OR 972161285698514
Common questions
What is Duncan James York, MD's NPI number?
Duncan James York, MD's National Provider Identifier (NPI) is 1184666471, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Duncan James York, MD located?
The NPPES record lists a practice address at 10000 SE Main St, Portland, OR, 97216. Phone: (503) 261-6985. Providers update this record themselves, so call before visiting.
How can I verify Duncan James York, MD's license?
NPPES lists Oregon license number MD26551, 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 Duncan James York, MD prescribe under Medicare Part D?
In 2024, Duncan James York, MD had 465 Medicare Part D claims for 134 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.