Winifred S. Wong, D.D.S.
Endodontics · Fremont, CA
Winifred S. Wong, D.D.S. is an endodontics with a practice address in Fremont, California, and NPI 1497846430, issued on Sep 27, 2006. Check the license (California 39578, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Winifred S. Wong
- Credential
- D.D.S.
- Primary taxonomy
- Endodontics 1223E0200X
- License number
- 39578 CA
Self-reported in NPPES; status is on the state search - Practice location
- 39835 Paseo Padre Pkwy, Fremont, CA 94538
- Phone
- (510) 683-8900
- Enumerated
- Sep 27, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (510) 683-9139
- Entity
- Type 1 · individual
8 nearest endodontics records → All 1,018 in California → Look up another NPI →
Also registered at 39835 Paseo Padre Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victoria Lo, DDSEndodontics1558970426
Verify Winifred S. Wong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 39578Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average endodontics in 2024
46 Medicare Part D claims for 39 beneficiaries, against an average of 121 among the 4,119 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Penicillin V Potassium22 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.
Winifred S. Wong among 1,018 endodontics records in California
Winifred S. Wong, D.D.S. is one of 1,018 endodontics records with a practice address in California. 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223E0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endodontics providers in California
There are 1,018 endodontics records in California.
All 1,018 in California → Every provider in Fremont → Endodontics nationwide →
The 8 endodontics records with the nearest ZIP codes
- Salvia Javidan-Nejad, DDSFremont, CA 945381780790121
- Victoria Lo, DDSFremont, CA 945381558970426
- Antonio Vera, DDSFremont, CA 945381811053960
- William Cliff, DDS, MSDFremont, CA 945391588763155
- Terry Han, DDSFremont, CA 945391427157916
- G-Hong Hsu, DDS, MSFremont, CA 945391275632853
- Mark Charnley, D.M.D.Hayward, CA 945411932239415
- Brian Feiger, DDSHayward, CA 945411356493753
Common questions
What is Winifred S. Wong, D.D.S.'s NPI number?
Winifred S. Wong, D.D.S.'s National Provider Identifier (NPI) is 1497846430, issued on Sep 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Winifred S. Wong, D.D.S. located?
The NPPES record lists a practice address at 39835 Paseo Padre Pkwy, Fremont, CA, 94538. Phone: (510) 683-8900. Providers update this record themselves, so call before visiting.
How can I verify Winifred S. Wong, D.D.S.'s license?
NPPES lists California license number 39578, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Winifred S. Wong, D.D.S. prescribe under Medicare Part D?
In 2024, Winifred S. Wong, D.D.S. had 46 Medicare Part D claims for 39 beneficiaries; the average among endodontics prescribers was 121. 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.