NPPES file of Aug 9, 2026

William Christopher Mathews, M.D.

Infectious Disease Physician · San Diego, CA

William Christopher Mathews, M.D. is an infectious disease physician with a practice address in San Diego, California, and NPI 1194773259, issued on May 4, 2006. Check the license (California G32447, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194773259
Name
William Christopher Mathews
Credential
M.D.
Primary taxonomy
Infectious Disease Physician 207RI0200X
License numbers
G32447 CA
APCC19232 CA
G 032447 CA
Self-reported in NPPES; status is on the state search
Practice location
4168 Front St, San Diego, CA 92103
Phone
(619) 543-3995
Enumerated
May 4, 2006
Record last updated
Feb 11, 2026
Fax
(619) 543-7841
Medicaid ID
00G324470 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →

Also registered at 4168 Front St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jorge Alvarado, M.D.Obstetrics & Gynecology Physician1538588561
  2. Paloma Arvizu, NURSE PRACTITIONERFamily Nurse Practitioner1689139396
  3. Julie Aviles, RDRegistered Dietitian1487587275
  4. Beatrix Bartok, M.D.Specialist1639352859
  5. Ori Ben-Yehuda, M.D.Cardiovascular Disease Physician1508912387
  6. Schafer Boeder, M.D.Endocrinology, Diabetes & Metabolism Physician1477808285

Verify William Christopher Mathews in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G32447    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $17.68

1 payment: food and beverage; the largest payer was ViiV Healthcare Company. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Mathews$17.68
  2. Specialty average$4,362.19

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

William Christopher Mathews among 1,119 infectious disease physician records in California

William Christopher Mathews, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% 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 4% of them.

  • NPI issued2006 · 4% of these records are older, 54% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 66% of these records are
  • Record last updated2026 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in California

There are 1,119 infectious disease physician records in California.

All 1,119 in California → Every provider in San Diego → Infectious Disease Physician nationwide →

The 8 infectious disease physician records with the nearest ZIP codes

  1. Saima Aslam, M.D.San Diego, CA 921031477565257
  2. Constance Benson, M.D.San Diego, CA 921031871541664
  3. Ajay Bharti, MDSan Diego, CA 921031902954910
  4. Sara Browne, M.DSan Diego, CA 921031275571176
  5. Joshua Fierer, M.D.San Diego, CA 921031871525584
  6. Theodoros Katsivas, MDSan Diego, CA 921031679526164
  7. Kalpana Natrajan, M.D.San Diego, CA 921031770686834
  8. David Pride, MD, PHDSan Diego, CA 921031194875526

Common questions

What is William Christopher Mathews, M.D.'s NPI number?

William Christopher Mathews, M.D.'s National Provider Identifier (NPI) is 1194773259, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Christopher Mathews, M.D. located?

The NPPES record lists a practice address at 4168 Front St, San Diego, CA, 92103. Phone: (619) 543-3995. Providers update this record themselves, so call before visiting.

How can I verify William Christopher Mathews, M.D.'s license?

NPPES lists California license number G32447, 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.