Melissa Rose Nyendak, MD
Infectious Disease Physician · Portland, OR
Melissa Rose Nyendak, MD is an infectious disease physician with a practice address in Portland, Oregon, and NPI 1851506299, issued on May 11, 2007. Check the license (Oregon MD25919, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Melissa Rose Nyendak
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- MD25919 OR
Self-reported in NPPES; status is on the state search - Practice location
- Oregon Health And Science University, Portland, OR 97239
- Phone
- (503) 494-9000
- Enumerated
- May 11, 2007
- Record last updated
- Aug 7, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20060417000135); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 127 in Oregon → Look up another NPI →
Also registered at Oregon Health And Science University
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaclyn ThiessenDiagnostic Radiology Physician1376962068
Verify Melissa Rose Nyendak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD25919Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Multnomah CountyPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melissa Rose Nyendak among 127 infectious disease physician records in Oregon
Melissa Rose Nyendak, MD is one of 127 infectious disease physician records with a practice address in Oregon. 74% 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 46% of them.
- NPI issued2007 · 46% of these records are older, 42% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2002 · median 2007 among the 88 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Oregon
There are 127 infectious disease physician records in Oregon.
All 127 in Oregon → Every provider in Portland → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Richard Bryant, MDPortland, OR 972391285641100
- Sunwen Chou, MDPortland, OR 972391568477073
- Graeme Forrest, M.D.Portland, OR 972391730139114
- Morgan Hakki, MDPortland, OR 972391255441556
- Kieren MarrPortland, OR 972391104916055
- George Mejicano, MDPortland, OR 972391083680979
- Melissa Murphy, MDPortland, OR 972391497763916
- Christopher Pfeiffer, M.D., M.H.S.Portland, OR 972391760440044
Common questions
What is Melissa Rose Nyendak, MD's NPI number?
Melissa Rose Nyendak, MD's National Provider Identifier (NPI) is 1851506299, issued on May 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Melissa Rose Nyendak, MD located?
The NPPES record lists a practice address at Oregon Health And Science University, Portland, OR, 97239. Phone: (503) 494-9000. Providers update this record themselves, so call before visiting.
How can I verify Melissa Rose Nyendak, MD's license?
NPPES lists Oregon license number MD25919, 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.
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.