DR. WILLIAM CHRISTOPHER MATHEWS M.D.
NPI 1194773259
Internal Medicine - Infectious Disease in San Diego, CA

Q: What is William Mathews's NPI number?

The NPI number for William Mathews is 1194773259. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Q: What is William Mathews's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for William Mathews was last updated on February 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 04, 2006PECOS Enrolled

4168 FRONT ST, SAN DIEGO, CA 92103(619) 543-3995(619) 543-7841 Get Directions Write a Review

NPPES record last updated: February 11, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. William Christopher Mathews M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM CHRISTOPHER MATHEWS M.D. (NPI 1194773259) is an individual infectious disease provider in San Diego, California, licensed in California (G32447) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194773259

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameDR. WILLIAM CHRISTOPHER MATHEWSCredential: M.D.

Location Address4168 FRONT STSan Diego, CA 92103-2030

Mailing AddressPo Box 232410San Diego, CA 92193-2410

Phone(619) 543-3995

Fax(619) 543-7841

Sole ProprietorNo

Enumeration DateMay 4, 2006

Last NPPES UpdateFebruary 11, 2026

NPPES CertifiedFebruary 11, 2026

✔ NPI 1194773259 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in CA · G32447

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License APCC19232 (CA)

Also ListedInternal MedicineTaxonomy 207R00000X · License G 032447 (CA)

4168 FRONT ST, San Diego, CA 92103

Open in Google Maps ↗

Other Identifiers 1

Medicaid00G324470CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Christopher Mathews M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KARLA FERNANDA TORRES MSN-FNP

Nurse Practitioner (Family)