Ellen P. Duplain, MD
Internal Medicine Physician · Portland, OR
Ellen P. Duplain, MD is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1225066301, issued on Jun 29, 2006. Check the license (Oregon MD24340, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ellen P. Duplain
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD24340 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 29, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (503) 261-6790
- Medicare enrollment
- Enrolled (PECOS I20040723000204); 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.
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Verify Ellen P. Duplain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD24340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 86 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Legacy Clinics LLCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen P. Duplain among 2,116 internal medicine physician records in Oregon
Ellen P. Duplain, 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
- Graduated2000 · median 2008 among the 1,232 with a school on file
- Record last updated2007 · 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
- 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
- Ngan-Lien Nguyen, MDPortland, OR 972161487618724
Common questions
What is Ellen P. Duplain, MD's NPI number?
Ellen P. Duplain, MD's National Provider Identifier (NPI) is 1225066301, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ellen P. Duplain, 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 Ellen P. Duplain, MD's license?
NPPES lists Oregon license number MD24340, 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.
What is Ellen P. Duplain, MD's MIPS final score?
The 2023 MIPS final score is 86 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.