Evan Ong, M.D.
Surgical Oncology Physician · Seattle, WA
Evan Ong, M.D. is a surgical oncology physician with a practice address in Seattle, Washington, and NPI 1073541959, issued on Jun 29, 2006. Check the license (Washington 60454602, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Evan Ong
- Credential
- M.D.
- Primary taxonomy
- Surgical Oncology Physician 2086X0206X
- License number
- 60454602 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Madison St Ste 1411, Seattle, WA 98104
- Phone
- (206) 386-6700
- Enumerated
- Jun 29, 2006
- Record last updated
- Jun 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (206) 386-6706
- Medicare enrollment
- Enrolled (PECOS I20140715001798); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgical oncology physician records → All 35 in Washington → Look up another NPI →
Also registered at 1221 Madison St Ste 1411
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Hart, MDSurgery Physician1720161755
- Weston Kroes, MDStudent in an Organized Health Care Education/Training Program1548011216
Verify Evan Ong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license 60454602Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average surgical oncology physician in 2024
40 Medicare Part D claims for 14 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D.
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 MIPS final score for 2023 (Medicare payment program): 83.8 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).
Industry payments in 2024: $11,240.00
3 payments; by number, the most common kind was consulting fee; the largest payer was Histosonics, Inc. The 1,132 providers of this specialty with any payment received $4,224.74 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Evan Ong among 35 surgical oncology physician records in Washington
Evan Ong, M.D. is one of 35 surgical oncology physician records with a practice address in Washington. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 57% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1999 · median 2009 among the 27 with a school on file
- Record last updated2021 · 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 2086X0206X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Oncology Physician providers in Washington
There are 35 surgical oncology physician records in Washington.
All 35 in Washington → Every provider in Seattle → Surgical Oncology Physician nationwide →
The 8 surgical oncology physician records with the nearest ZIP codes
- Mohamed Alassas, MDSeattle, WA 981041871609933
- Laura Lazarus, MDSeattle, WA 981041598792590
- Colin Rog, MDSeattle, WA 981041689170243
- Flavio Rocha, MDSeattle, WA 981011609938778
- Peter Wu, M.D.Seattle, WA 981081134239981
- Benjamin AndersonSeattle, WA 981091942367487
- Meghan Flanagan, MDSeattle, WA 981091962726521
- Walter Holder, M.D.Seattle, WA 981221073580536
Common questions
What is Evan Ong, M.D.'s NPI number?
Evan Ong, M.D.'s National Provider Identifier (NPI) is 1073541959, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Evan Ong, M.D. located?
The NPPES record lists a practice address at 1221 Madison St Ste 1411, Seattle, WA, 98104. Phone: (206) 386-6700. Providers update this record themselves, so call before visiting.
How can I verify Evan Ong, M.D.'s license?
NPPES lists Washington license number 60454602, 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.
How much does Evan Ong, M.D. prescribe under Medicare Part D?
In 2024, Evan Ong, M.D. had 40 Medicare Part D claims for 14 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.
What is Evan Ong, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.8 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.