Joyce N. Gunawan, D.D.S
General Practice Dentistry · Hayward, CA
Joyce N. Gunawan, D.D.S is a general practice dentistry with a practice address in Hayward, California, and NPI 1588732648, issued on Nov 30, 2006. Check the license (California 54885, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joyce N. Gunawan
- Credential
- D.D.S
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 54885 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22331 Mission Blvd, Hayward, CA 94541
- Phone
- (510) 471-5880
- Enumerated
- Nov 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 22331 Mission Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yamilet Abaunza, MSW, ASWClinical Social Worker1144605429
- Jia Qi Abdon, FNPFamily Nurse Practitioner1326773441
- Jose AguirreCounselor1235822677
- Elaine Ahn, NPFamily Nurse Practitioner1639901739
- Ziba Amed, ODOptometrist1457623266
- Lauren AndersonFamily Nurse Practitioner1952942955
Verify Joyce N. Gunawan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 54885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average general practice dentistry in 2024
28 Medicare Part D claims for 14 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin11 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.
Joyce N. Gunawan among 17,852 general practice dentistry records in California
Joyce N. Gunawan, D.D.S is one of 17,852 general practice dentistry records with a practice address in California. 57% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
66 general practice dentistry records list a practice address in Hayward
They are 66 of the 3,993 NPPES records with a practice address in Hayward, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Hayward → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Arlene Cotas, D.M.D.Hayward, CA 945411770521767
- David Crockett, DDSHayward, CA 945411356367502
- Brian Han, D.M.DHayward, CA 945411639264484
- Wilson Leung, DDSHayward, CA 945411013033109
- Truong Nguyen, D.D.S.Hayward, CA 945411710192299
- Jocelyn Riel, DMDHayward, CA 945411336364603
- Isabella Soloveychik, D.D.S.Hayward, CA 945411255463154
- Gerald Soohoo, DDSHayward, CA 945411477557700
Common questions
What is Joyce N. Gunawan, D.D.S's NPI number?
Joyce N. Gunawan, D.D.S's National Provider Identifier (NPI) is 1588732648, issued on Nov 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joyce N. Gunawan, D.D.S located?
The NPPES record lists a practice address at 22331 Mission Blvd, Hayward, CA, 94541. Phone: (510) 471-5880. Providers update this record themselves, so call before visiting.
How can I verify Joyce N. Gunawan, D.D.S's license?
NPPES lists California license number 54885, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Joyce N. Gunawan, D.D.S prescribe under Medicare Part D?
In 2024, Joyce N. Gunawan, D.D.S had 28 Medicare Part D claims for 14 beneficiaries; the average among general practice dentistry prescribers was 83. 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.