Joy Kai-Yang Zia, M.D.
Obstetrics & Gynecology Physician · Seattle, WA
Joy Kai-Yang Zia, M.D. is an obstetrics & gynecology physician with a practice address in Seattle, Washington, and NPI 1356559462, issued on May 21, 2007. Check the license (Washington MD60167307, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Joy Kai-Yang Zia
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MD60167307 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1455 NW Leary Way Ste 250, Seattle, WA 98107
- Phone
- (206) 520-5000
- Enumerated
- May 21, 2007
- Record last updated
- Feb 6, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 1356559462 WA
- Medicare enrollment
- Enrolled (PECOS I20110310001065); accepts Medicare assignment
- Medical or professional school
- University Of Hawaii John A. Burns School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,038 in Washington → Look up another NPI →
Also registered at 1455 NW Leary Way Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Quratul Cheema, MDFamily Medicine Physician1720180219
- Jason CircelliClinical Social Worker1356790331
- Eduardo Garza, PAPhysician Assistant1861808669
- Anthony Mistretta, DOFamily Medicine Physician1720577877
- Melissa Mossar, ARNP, DNPFamily Nurse Practitioner1790158376
- Jeremy Oulton, MDGeriatric Medicine (Family Medicine) Physician1801327366
Verify Joy Kai-Yang Zia in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60167307Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
21 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol11 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 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).
Joy Kai-Yang Zia among 1,038 obstetrics & gynecology physician records in Washington
Joy Kai-Yang Zia, M.D. is one of 1,038 obstetrics & gynecology physician records with a practice address in Washington. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 42% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2006 · median 2007 among the 582 with a school on file
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Washington
There are 1,038 obstetrics & gynecology physician records in Washington.
All 1,038 in Washington → Every provider in Seattle → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rebecca Dehority, MDSeattle, WA 981071134654577
- Romina Dunnam, DOSeattle, WA 981071780704023
- Teresa Goepfert, D. O.Seattle, WA 981071225354152
- Heidi Knickerbocker, MDSeattle, WA 981071700945037
- Leslie Miller, M.D.Seattle, WA 981071932289931
- Ashwini Pandit, MDSeattle, WA 981071306086210
- Clara Savage, MDSeattle, WA 981071467748947
- Stephen Slack, M.D.Seattle, WA 981071619080835
Common questions
What is Joy Kai-Yang Zia, M.D.'s NPI number?
Joy Kai-Yang Zia, M.D.'s National Provider Identifier (NPI) is 1356559462, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joy Kai-Yang Zia, M.D. located?
The NPPES record lists a practice address at 1455 NW Leary Way Ste 250, Seattle, WA, 98107. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Joy Kai-Yang Zia, M.D.'s license?
NPPES lists Washington license number MD60167307, 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 Joy Kai-Yang Zia, M.D. prescribe under Medicare Part D?
In 2024, Joy Kai-Yang Zia, M.D. had 21 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Joy Kai-Yang Zia, 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.