William Mathews, M.D.
NPI 1194773259 · Infectious Disease Physician · San Diego, CA
William Mathews, M.D. is a Infectious Disease Physician provider in San Diego, CA (NPI 1194773259).
Provider details
- NPI number
- 1194773259
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G32447 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Behavioral Health & Social Service Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-04
- Last updated
- 2026-02-11
- Certified
- 2026-02-11
Frequently asked questions
- What is William Mathews's NPI number?
- William Mathews's National Provider Identifier (NPI) is 1194773259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mathews's specialty?
- William Mathews is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Mathews located?
- William Mathews's practice location on file with NPPES is 4168 Front St, San Diego, CA 92103-2030.
- What is William Mathews's phone number?
- The practice phone number listed in the NPPES registry for William Mathews is (619) 543-3995.
- Is William Mathews's NPI active?
- Yes — William Mathews's NPI (1194773259) is active in the NPPES registry as of the last update on 2026-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.