Robert Marcus, MD
NPI 1700856341 · Diagnostic Radiology Physician · Torrance, CA
Robert Marcus, MD is a Diagnostic Radiology Physician provider in Torrance, CA (NPI 1700856341).
Provider details
- NPI number
- 1700856341
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G44639 (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
20 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
- 2006-01-25
- Last updated
- 2016-11-02
Frequently asked questions
- What is Robert Marcus's NPI number?
- Robert Marcus's National Provider Identifier (NPI) is 1700856341, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Marcus's specialty?
- Robert Marcus is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Marcus located?
- Robert Marcus's practice location on file with NPPES is 4101 Torrance Blvd, Torrance, CA 90503-4607.
- What is Robert Marcus's phone number?
- The practice phone number listed in the NPPES registry for Robert Marcus is (310) 543-6929.
- Is Robert Marcus's NPI active?
- Yes — Robert Marcus's NPI (1700856341) is active in the NPPES registry as of the last update on 2016-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.