William Watts, M.D.
NPI 1396958559 · Anatomic Pathology & Clinical Pathology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Watts, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in San Diego, CA (NPI 1396958559).
Provider details
- NPI number
- 1396958559
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A82647 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,263 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 437 | $80 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 138 | $38 |
| Surgical Pathology Consultation and Report on Referred Material Requiring Preparation of Slides88323 | 87 | $125 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 83 | $121 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 79 | $84 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 78 | $29 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-07
- Last updated
- 2008-06-20
Frequently asked questions
- What is William Watts's NPI number?
- William Watts's National Provider Identifier (NPI) is 1396958559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Watts's specialty?
- William Watts is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is William Watts located?
- William Watts's practice location on file with NPPES is 7592 Metropolitan Dr, San Diego, CA 92108-4428.
- What is William Watts's phone number?
- The practice phone number listed in the NPPES registry for William Watts is (619) 297-4900.
- Does William Watts accept Medicare?
- William Watts is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Watts's NPI active?
- Yes — William Watts's NPI (1396958559) is active in the NPPES registry as of the last update on 2008-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.