William Martin
NPI 1881913689 · Clinical Pathology/Laboratory Medicine Physician · Los Angeles, CA
William Martin is a Clinical Pathology/Laboratory Medicine Physician provider in Los Angeles, CA (NPI 1881913689).
Provider details
- NPI number
- 1881913689
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- A42019 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-19
- Last updated
- 2013-11-15
Frequently asked questions
- What is William Martin's NPI number?
- William Martin's National Provider Identifier (NPI) is 1881913689, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Martin's specialty?
- William Martin is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Martin located?
- William Martin's practice location on file with NPPES is 2011 Zonal Ave, Los Angeles, CA 90033.
- What is William Martin's phone number?
- The practice phone number listed in the NPPES registry for William Martin is (626) 799-1700.
- Is William Martin's NPI active?
- Yes — William Martin's NPI (1881913689) is active in the NPPES registry as of the last update on 2013-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.