Masumi Ueda Oshima, M.D.
Hematology & Oncology Physician · Seattle, WA
Masumi Ueda Oshima, M.D. is a hematology & oncology physician with a practice address in Seattle, Washington, and NPI 1235454786, issued on Mar 28, 2010. Check the license (Washington MD60298964, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Masumi Ueda Oshima
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD60298964 WA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Eastlake Ave E, Seattle, WA 98109
- Phone
- (206) 288-1000
- Enumerated
- Mar 28, 2010
- Record last updated
- Oct 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 1235454786 WA
- Medicare enrollment
- Enrolled (PECOS I20160923000396); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 476 in Washington → Look up another NPI →
Also registered at 825 Eastlake Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Farnoush Abar, M.D.Hematology & Oncology Physician1558560342
- Francis Achacoso, MBA, MSN, RN, NE-BCRegistered Nurse1215604061
- Bamidele Adebayo, MDNeurological Surgery Physician1255176194
- Oyebimpe Adesina, MDHematology & Oncology Physician1184934770
- Shirali AgarwalHematology & Oncology Physician1972093052
- Ali AlgiraigriSpecialist1467880260
Verify Masumi Ueda Oshima in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60298964Check 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 MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Masumi Ueda Oshima among 476 hematology & oncology physician records in Washington
Masumi Ueda Oshima, M.D. is one of 476 hematology & oncology physician records with a practice address in Washington. 71% 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 56% of them.
- NPI issued2010 · 56% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2010 · median 2006 among the 294 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Washington
There are 476 hematology & oncology physician records in Washington.
All 476 in Washington → Every provider in Seattle → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Nicholas Burwick, M.D.Seattle, WA 981091942234695
- Rekha Chandran, MDSeattle, WA 981091457393878
- Elena Chiorean, M.D.Seattle, WA 981091891750808
- Eric Collisson, MDSeattle, WA 981091093731143
- Jason Comer, M.D.Seattle, WA 981091396719910
- Ying Cui, MD PHDSeattle, WA 981091639191448
- Lawrence Fong, MDSeattle, WA 981091316901630
- Boglarka Gyurkocza, M.D.Seattle, WA 981091366474892
Common questions
What is Masumi Ueda Oshima, M.D.'s NPI number?
Masumi Ueda Oshima, M.D.'s National Provider Identifier (NPI) is 1235454786, issued on Mar 28, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Masumi Ueda Oshima, M.D. located?
The NPPES record lists a practice address at 825 Eastlake Ave E, Seattle, WA, 98109. Phone: (206) 288-1000. Providers update this record themselves, so call before visiting.
How can I verify Masumi Ueda Oshima, M.D.'s license?
NPPES lists Washington license number MD60298964, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Masumi Ueda Oshima, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.1 of 100. 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.