William Fenerty
Family Medicine Physician · Diamond Bar, CA
William Fenerty is a family medicine physician with a practice address in Diamond Bar, California, and NPI 1184625915, issued on Aug 2, 2005. Check the license (California 20A4089, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Fenerty
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A4089 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1514 Valley Vista Dr, Diamond Bar, CA 91765
- Phone
- (714) 449-4842
- Enumerated
- Aug 2, 2005
- Record last updated
- Nov 23, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (714) 449-4816
- Entity
- Type 1 · individual
Also registered at 1514 Valley Vista Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wilfredo Alejo, M.D.Pediatrics Physician1114990785
- Silvia Alonzo, MS, PA-CMedical Physician Assistant1942586623
- Jing Chen, M.D.Pediatrics Physician1699208942
- Brian Koffman, MDFamily Medicine Physician1326049164
- Keli Layton-Cunnigan, PAPhysician Assistant1063613958
- Eric Lee, DOFamily Medicine Physician1801208707
Verify William Fenerty in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A4089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25 family medicine physician records list a practice address in Diamond Bar
They are 25 of the 598 NPPES records with a practice address in Diamond Bar, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 25 in Diamond Bar → All 17,133 in California → Every provider in Diamond Bar →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is William Fenerty's NPI number?
William Fenerty's National Provider Identifier (NPI) is 1184625915, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Fenerty located?
The NPPES record lists a practice address at 1514 Valley Vista Dr, Diamond Bar, CA, 91765. Phone: (714) 449-4842. Providers update this record themselves, so call before visiting.
How can I verify William Fenerty's license?
NPPES lists California license number 20A4089, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.