Joy Y. Wang, M.D. D.M.D.
Specialist · Sunnyvale, CA
Joy Y. Wang, M.D. D.M.D. is a specialist with a practice address in Sunnyvale, California, and NPI 1427110410, issued on Dec 15, 2006. Check the license (California A73671, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joy Y. Wang
- Credential
- M.D. D.M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A73671 CA
Self-reported in NPPES; status is on the state search - Practice location
- 660 S Bernardo Ave Ste 4, Sunnyvale, CA 94087
- Phone
- (408) 716-9300
- Enumerated
- Dec 15, 2006
- Record last updated
- Nov 25, 2025
- Fax
- (408) 716-9305
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Verify Joy Y. Wang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A73671Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average specialist in 2024
141 Medicare Part D claims for 85 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Ibuprofen39 claims
- Amoxicillin38 claims
- Amoxicillin-Clavulanate Potass29 claims
- Clindamycin Hcl14 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.
Industry payments in 2024: $2,047.60
4 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. The 5,844 providers of this specialty with any payment received $4,760.79 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.
Joy Y. Wang among 5,749 specialist records in California
Joy Y. Wang, M.D. D.M.D. is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2025 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Sunnyvale → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Galia Bitterman, M.S.Sunnyvale, CA 940871376896340
- Art Chakman, BS, CHTSunnyvale, CA 940871447507678
- Lawrence Chan, M.D.Sunnyvale, CA 940871669437380
- Enkuan Hu, CERTIFIED THERAPISTSunnyvale, CA 940871447660477
- Seymour Rapaport, M.D.Sunnyvale, CA 940871043297930
- Anne Sinha, OTR/L, MOTSunnyvale, CA 940871235307059
- Joselin Ayala PachecoSunnyvale, CA 940861912652702
- Noel Hernandez, R.P.T.Sunnyvale, CA 940861679899819
Common questions
What is Joy Y. Wang, M.D. D.M.D.'s NPI number?
Joy Y. Wang, M.D. D.M.D.'s National Provider Identifier (NPI) is 1427110410, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joy Y. Wang, M.D. D.M.D. located?
The NPPES record lists a practice address at 660 S Bernardo Ave Ste 4, Sunnyvale, CA, 94087. Phone: (408) 716-9300. Providers update this record themselves, so call before visiting.
How can I verify Joy Y. Wang, M.D. D.M.D.'s license?
NPPES lists California license number A73671, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Joy Y. Wang, M.D. D.M.D. prescribe under Medicare Part D?
In 2024, Joy Y. Wang, M.D. D.M.D. had 141 Medicare Part D claims for 85 beneficiaries; the average among specialist prescribers was 1,380. 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.