Nicholas An, MD
Anesthesiology Physician · Portland, OR
Nicholas An, MD is an anesthesiology physician with a practice address in Portland, Oregon, and NPI 1306228853, issued on Jun 22, 2015. Check the license (Oregon MD197425, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nicholas An
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- MD197425 OR
A162035 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD # 2, Portland, OR 97239
- Phone
- (503) 494-7641
- Enumerated
- Jun 22, 2015
- Record last updated
- Jul 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (503) 494-8368
- Medicare enrollment
- Enrolled (PECOS I20211012002330); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical Branch At Galveston, 2015
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 969 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD # 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Salameh Obeidat, MBBS, MHQSAnesthesiology Physician1235617549
Verify Nicholas An in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD197425Check 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
- Matrix Anesthesia, PSBellevue, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas An among 969 anesthesiology physician records in Oregon
Nicholas An, MD is one of 969 anesthesiology physician records with a practice address in Oregon. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.
- NPI issued2015 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2015 · median 2009 among the 627 with a school on file
- Record last updated2020 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
578 anesthesiology physician records list a practice address in Portland
They are 578 of the 42,088 NPPES records with a practice address in Portland, and 969 anesthesiology physician records in Oregon.
All 969 in Oregon → Every provider in Portland → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Patrick Bakke, M.D.Portland, OR 972391154366656
- Norman Cohen, MDPortland, OR 972391093780769
- Adam Collins, MDPortland, OR 972391043278344
- Ryan Crowley, MDPortland, OR 972391477592434
- Izumi Harukuni, M.D.Portland, OR 972391699724120
- Scott Hein, M.D.Portland, OR 972391477593424
- Gerald Holguin, M.D.Portland, OR 972391932176245
- Matthias Merkel, M.D.Portland, OR 972391568407021
Common questions
What is Nicholas An, MD's NPI number?
Nicholas An, MD's National Provider Identifier (NPI) is 1306228853, issued on Jun 22, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas An, MD located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD # 2, Portland, OR, 97239. Phone: (503) 494-7641. Providers update this record themselves, so call before visiting.
How can I verify Nicholas An, MD's license?
NPPES lists Oregon license number MD197425, 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.