Tony Yen, MD
Internal Medicine Physician · Kirkland, WA
Tony Yen, MD is an internal medicine physician with a practice address in Kirkland, Washington, and NPI 1225012735, issued on Nov 30, 2005. Check the license (Washington MD00033921, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Tony Yen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00033921 WA
Self-reported in NPPES; status is on the state search - Practice location
- 12040 NE 128TH St, Kirkland, WA 98034
- Phone
- (425) 899-2560
- Enumerated
- Nov 30, 2005
- Record last updated
- Dec 14, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (425) 899-2079
- Medicaid ID
- 8205536 WA
- Medicare enrollment
- Enrolled (PECOS I20101208000733); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 12040 NE 128TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ziad Alsoufi, MDHospitalist Physician1760652648
- Kathleen AmbielliPharmacist1407612526
- Kevin AntoineOccupational Therapist1528896586
- Warren Appleton, M.D.Emergency Medicine Physician1700831591
- Seth Arlow, MDAnesthesiology Physician1891749586
Verify Tony Yen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00033921Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
40 Medicare Part D claims for 18 beneficiaries, against an average of 3,176 among the 108,855 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.
Bills Medicare through one group practice
- King County Public Hospital District NO 2Kirkland, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tony Yen among 3,079 internal medicine physician records in Washington
Tony Yen, MD is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1994 · median 2006 among the 1,852 with a school on file
- Record last updated2010 · 63% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
70 internal medicine physician records list a practice address in Kirkland
They are 70 of the 3,404 NPPES records with a practice address in Kirkland, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Kirkland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Colquhoun, MDKirkland, WA 980341962484865
- Erin Edwards, M.D.Kirkland, WA 980341306837463
- Eric Hansen, MDKirkland, WA 980341447249206
- David Likosky, MDKirkland, WA 980341992787352
- Johnson Loh, MDKirkland, WA 980341114909090
- James Lund, M.D.Kirkland, WA 980341033108709
- Nancy Marshall, MDKirkland, WA 980341548242456
- Victoria Marxen, MDKirkland, WA 980341578545356
Common questions
What is Tony Yen, MD's NPI number?
Tony Yen, MD's National Provider Identifier (NPI) is 1225012735, issued on Nov 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tony Yen, MD located?
The NPPES record lists a practice address at 12040 NE 128TH St, Kirkland, WA, 98034. Phone: (425) 899-2560. Providers update this record themselves, so call before visiting.
How can I verify Tony Yen, MD's license?
NPPES lists Washington license number MD00033921, 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 Tony Yen, MD prescribe under Medicare Part D?
In 2024, Tony Yen, MD had 40 Medicare Part D claims for 18 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.