Aaron J. Chan, MD
Hospitalist Physician · Oregon City, OR
Aaron J. Chan, MD is a hospitalist physician with a practice address in Oregon City, Oregon, and NPI 1750607594, issued on Apr 19, 2010. Check the license (Oregon MD163409, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Aaron J. Chan
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- MD163409 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Division St, Oregon City, OR 97045
- Phone
- (503) 650-6270
- Enumerated
- Apr 19, 2010
- Record last updated
- Mar 30, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 500658174 OR
- Medicare enrollment
- Enrolled (PECOS I20130709000753); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 471 in Oregon → Look up another NPI →
Also registered at 1500 Division St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Allen, MDEmergency Medicine Physician1467915843
- Zachary Amos, DOInternal Medicine Physician1831776582
- Yo Atteberry, MDEmergency Medicine Physician1548217193
- Amit Barve, MDHospitalist Physician1760667059
- Hannah Beachwood, DOEmergency Medicine Physician1497498711
- Diane Brace, FNP-BCFamily Nurse Practitioner1598427296
Verify Aaron J. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD163409Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average hospitalist physician in 2024
191 Medicare Part D claims for 86 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Oxycodone Hcl17 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 93.1 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 2 group practices
- Providence Health And Services - OregonPortland, OR
- Providence Health And Services OregonPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron J. Chan among 471 hospitalist physician records in Oregon
Aaron J. Chan, MD is one of 471 hospitalist physician records with a practice address in Oregon. 92% 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 49% of them.
- NPI issued2010 · 49% of these records are older, 46% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 85% of these records are
- Graduated2010 · median 2009 among the 400 with a school on file
- Record last updated2017 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Oregon
There are 471 hospitalist physician records in Oregon.
All 471 in Oregon → Every provider in Oregon City → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Amit Barve, MDOregon City, OR 970451760667059
- Danielle Cataxinos, DOOregon City, OR 970451295964310
- Tian Davis, D.O.Oregon City, OR 970451285970343
- James Hinckley, M.D.Oregon City, OR 970451336175157
- Mary Hoye, MDOregon City, OR 970451821664897
- Jesus Moreno, M.D.Oregon City, OR 970451710113386
- Amber Cardinalli, D.O.Hood River, OR 970311912344078
- Ryan Kealy, M.D.Hood River, OR 970311033325758
Common questions
What is Aaron J. Chan, MD's NPI number?
Aaron J. Chan, MD's National Provider Identifier (NPI) is 1750607594, issued on Apr 19, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Aaron J. Chan, MD located?
The NPPES record lists a practice address at 1500 Division St, Oregon City, OR, 97045. Phone: (503) 650-6270. Providers update this record themselves, so call before visiting.
How can I verify Aaron J. Chan, MD's license?
NPPES lists Oregon license number MD163409, 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 Aaron J. Chan, MD prescribe under Medicare Part D?
In 2024, Aaron J. Chan, MD had 191 Medicare Part D claims for 86 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Aaron J. Chan, MD's MIPS final score?
The 2023 MIPS final score is 93.1 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.