Vincent B. Siy, MD
Family Medicine Physician · Bellevue, WA
Vincent B. Siy, MD is a family medicine physician with a practice address in Bellevue, Washington, and NPI 1144509423, issued on Aug 4, 2011. Check the license (Washington MD61095140, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Vincent B. Siy
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD61095140 WA
MD166137 OR
Self-reported in NPPES; status is on the state search - Practice location
- 400 108TH Ave NE, Bellevue, WA 98004
- Phone
- (425) 635-6350
- Enumerated
- Aug 4, 2011
- Record last updated
- Mar 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (425) 635-6351
- Medicare enrollment
- Enrolled (PECOS I20210126003280); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 400 108TH Ave NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amanda Meyer, MSW, LICSWClinical Social Worker1275876237
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Verify Vincent B. Siy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61095140Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average family medicine physician in 2024
1,228 Medicare Part D claims for 153 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium121 claims
- Amlodipine Besylate88 claims
- Lisinopril74 claims
- Levothyroxine Sodium61 claims
- Losartan Potassium59 claims
- Metoprolol Succinate36 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): 79.2 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 one group practice
- Overlake Medical Clinics LLCBellevue, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vincent B. Siy among 5,534 family medicine physician records in Washington
Vincent B. Siy, MD is one of 5,534 family medicine physician records with a practice address in Washington. 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 2011, is newer than 62% of them.
- NPI issued2011 · 62% of these records are older, 36% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2006 · median 2009 among the 3,294 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
129 family medicine physician records list a practice address in Bellevue
They are 129 of the 6,738 NPPES records with a practice address in Bellevue, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Bellevue → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kerstin Beijer, MDBellevue, WA 980041912944836
- Julie Chuan, M.DBellevue, WA 980041174553184
- Janine Cooley, MDBellevue, WA 980041013905009
- Alexis David, M.D.Bellevue, WA 980041336175033
- Antony Egnal, MDBellevue, WA 980041821086810
- Elizabeth Herseth, MDBellevue, WA 980041174507602
- Denise Kraft, MDBellevue, WA 980041033109855
- Guozhen Liu, M.D.Bellevue, WA 980041053354613
Common questions
What is Vincent B. Siy, MD's NPI number?
Vincent B. Siy, MD's National Provider Identifier (NPI) is 1144509423, issued on Aug 4, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Vincent B. Siy, MD located?
The NPPES record lists a practice address at 400 108TH Ave NE, Bellevue, WA, 98004. Phone: (425) 635-6350. Providers update this record themselves, so call before visiting.
How can I verify Vincent B. Siy, MD's license?
NPPES lists Washington license number MD61095140, 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 Vincent B. Siy, MD prescribe under Medicare Part D?
In 2024, Vincent B. Siy, MD had 1,228 Medicare Part D claims for 153 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Vincent B. Siy, MD's MIPS final score?
The 2023 MIPS final score is 79.2 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.