Thomas Mattimore, MD
NPI 1447285507 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Mattimore, MD is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1447285507).
Provider details
- NPI number
- 1447285507
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G61869 (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
19 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
- 2006-07-11
- Last updated
- 2010-07-13
Frequently asked questions
- What is Thomas Mattimore's NPI number?
- Thomas Mattimore's National Provider Identifier (NPI) is 1447285507, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Mattimore's specialty?
- Thomas Mattimore is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Mattimore located?
- Thomas Mattimore's practice location on file with NPPES is 200 Medical Plz, Los Angeles, CA 90095-0001.
- What is Thomas Mattimore's phone number?
- The practice phone number listed in the NPPES registry for Thomas Mattimore is (310) 319-4377.
- Does Thomas Mattimore accept Medicare?
- Thomas Mattimore is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Mattimore's NPI active?
- Yes — Thomas Mattimore's NPI (1447285507) is active in the NPPES registry as of the last update on 2010-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.