William F. Tong, M.D.
General Practice Physician · Watsonville, CA
William F. Tong, M.D. is a general practice physician with a practice address in Watsonville, California, and NPI 1457354110, issued on May 24, 2005. Check the license (California G43285, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William F. Tong
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- G43285 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1505 Main St, Watsonville, CA 95076
- Phone
- (831) 722-1444
- Enumerated
- May 24, 2005
- Record last updated
- Feb 8, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (831) 722-4414
- Medicare enrollment
- Enrolled (PECOS I20060131000767); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Also registered at 1505 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alejandro Alvarez-BautistaPhysician Assistant1164181848
- Tye Depena, M.D.Family Medicine Physician1467459735
- Emma EcclesPhysician Assistant1750189650
- Daniel Johnson, PA-C, L.AC.Medical Physician Assistant1508151572
- Mark Luoto, MDEmergency Medicine Physician1932158854
- Mercy Rose, NP-CPrimary Care Nurse Practitioner1992980742
Verify William F. Tong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G43285Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 84.6 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
- Doctors ON Duty Medical Group, IncWatsonville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William F. Tong among 1,956 general practice physician records in California
William F. Tong, M.D. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1979 · median 1994 among the 520 with a school on file
- Record last updated2010 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in Watsonville → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Michele Violich, MDWatsonville, CA 950761831191477
- Sheri Bortz, M.D.Saratoga, CA 950701245364397
- Charles Goodman, M.D.Saratoga, CA 950701396016465
- Mike Nichols, M.D.Saratoga, CA 950701285896373
- David Wetterholt, M.D.Saratoga, CA 950701932484987
- William Sperling, M.D.Santa Cruz, CA 950651114156577
- Rima Lieben, M.D.Santa Cruz, CA 950621487901591
- Lester Reichek, M.D.Santa Cruz, CA 950621194072181
Common questions
What is William F. Tong, M.D.'s NPI number?
William F. Tong, M.D.'s National Provider Identifier (NPI) is 1457354110, issued on May 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William F. Tong, M.D. located?
The NPPES record lists a practice address at 1505 Main St, Watsonville, CA, 95076. Phone: (831) 722-1444. Providers update this record themselves, so call before visiting.
How can I verify William F. Tong, M.D.'s license?
NPPES lists California license number G43285, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is William F. Tong, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.6 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.