Robert Larsen
NPI 1285789958 · Infectious Disease Physician · Los Angeles, CA
Enrolled with Medicare as Order and Referring Only - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Larsen is a Infectious Disease Physician provider in Los Angeles, CA (NPI 1285789958).
Provider details
- NPI number
- 1285789958
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- G42332 (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
- 2007-01-24
- Last updated
- 2007-07-08
Frequently asked questions
- What is Robert Larsen's NPI number?
- Robert Larsen's National Provider Identifier (NPI) is 1285789958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Larsen's specialty?
- Robert Larsen is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Larsen located?
- Robert Larsen's practice location on file with NPPES is 1200 N State St, Los Angeles, CA 90033-1029.
- What is Robert Larsen's phone number?
- The practice phone number listed in the NPPES registry for Robert Larsen is (323) 226-2170.
- Does Robert Larsen accept Medicare?
- Robert Larsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Larsen's NPI active?
- Yes — Robert Larsen's NPI (1285789958) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.