Brian Chan, M.D.
Internal Medicine Physician · Portland, OR
Brian Chan, M.D. is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1588981625, issued on Apr 29, 2010. Check the license (Oregon PG159342, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Brian Chan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- PG159342 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD, Portland, OR 97239
- Phone
- (503) 494-8211
- Enumerated
- Apr 29, 2010
- Record last updated
- May 27, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150729008845); 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 3181 SW Sam Jackson Park RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alex AamodtCritical Care Medicine Registered Nurse1154257590
- Jefferson Abaricia, MD, PHDStudent in an Organized Health Care Education/Training Program1073215711
- Kenneth Abbey, MDAnesthesiology Physician1588779342
- Matthew Abbott, PA-CMedical Physician Assistant1154738003
- Ayah Abdelsalam Megahed, MD, MSCVascular & Interventional Radiology Physician1023503596
- Obada Abdulrazzak, MDStudent in an Organized Health Care Education/Training Program1598567430
Verify Brian Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license PG159342Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,356 Medicare Part D claims for 109 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 87 claims were for opioids.
Most prescribed
- Atorvastatin Calcium149 claims
- Omeprazole117 claims
- Tamsulosin Hcl100 claims
- Gabapentin83 claims
- Lisinopril66 claims
- Amlodipine Besylate61 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
- University Professional ServicesPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Chan among 2,116 internal medicine physician records in Oregon
Brian Chan, M.D. 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 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2010 · median 2008 among the 1,232 with a school on file
- Record last updated2015 · 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
- Thomas Anderson, M.D.Portland, OR 972391497786081
- Katherine Bensching, M.D.Portland, OR 972391407823867
- Clarisa Borrego, MDPortland, OR 972391912934514
- Ella BowmanPortland, OR 972391467436873
- Geoffery Clover, M.D.Portland, OR 972391972504314
- Paul Gorman, M.D.Portland, OR 972391326083742
- Joseph Hardman, M.D.Portland, OR 972391821044306
- Alan Hendin, MDPortland, OR 972391437127644
Common questions
What is Brian Chan, M.D.'s NPI number?
Brian Chan, M.D.'s National Provider Identifier (NPI) is 1588981625, issued on Apr 29, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Brian Chan, M.D. located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD, Portland, OR, 97239. Phone: (503) 494-8211. Providers update this record themselves, so call before visiting.
How can I verify Brian Chan, M.D.'s license?
NPPES lists Oregon license number PG159342, 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 Brian Chan, M.D. prescribe under Medicare Part D?
In 2024, Brian Chan, M.D. had 2,356 Medicare Part D claims for 109 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.