Frederick Fung, M.D.
Medical Toxicology (Preventive Medicine) Physician · San Diego, CA
Frederick Fung, M.D. is a medical toxicology (preventive medicine) physician with a practice address in San Diego, California, and NPI 1033129127, issued on Aug 9, 2006. Check the license (California A40644, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Frederick Fung
- Credential
- M.D.
- Primary taxonomy
- Medical Toxicology (Preventive Medicine) Physician 2083T0002X
- License number
- A40644 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Fir St, San Diego, CA 92101
- Phone
- (619) 446-1510
- Enumerated
- Aug 9, 2006
- Entity
- Type 1 · individual
Also registered at 300 Fir St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Ashley, DO, MPH, MSInternal Medicine Physician1578251328
- Corrie Broudy, MDRheumatology Physician1558467514
- Grace Buenaventura, O.D.Optometrist1225047541
- Colleen Buono, MDEmergency Medicine Physician1467494179
- Ulysses Carino, M.D.Emergency Medicine Physician1265441596
- Mahshid ChehrehraziPhysical Therapist1073231510
Verify Frederick Fung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A40644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Medical Toxicology (Preventive Medicine) Physician providers in California
There are 6 medical toxicology (preventive medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other medical toxicology (preventive medicine) physician records in California
- Robin Bernhoft, MDOjai, CA1598981623
- Thanjira Jiranantakan, MDSan Francisco, CA1841528437
- Natalie RodriguezStockton, CA1831020569
- Rais Vohra, MDFresno, CA1790740140
- Janet Weiss, MDBerkeley, CA1861414534
Common questions
What is Frederick Fung, M.D.'s NPI number?
Frederick Fung, M.D.'s National Provider Identifier (NPI) is 1033129127, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick Fung, M.D. located?
The NPPES record lists a practice address at 300 Fir St, San Diego, CA, 92101. Phone: (619) 446-1510. Providers update this record themselves, so call before visiting.
How can I verify Frederick Fung, M.D.'s license?
NPPES lists California license number A40644, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.