Gregory a Robertson MD a Professional Medical Corporation
NPI 1417197443 · Internal Medicine Physician · Newport Beach, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory a Robertson MD a Professional Medical Corporation is a Internal Medicine Physician organization in Newport Beach, CA (NPI 1417197443).
Provider details
- NPI number
- 1417197443
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Gregory Robertson, Ceo(949) 891-1441
- License
- G50555 (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
17 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
- 2009-03-04
- Last updated
- 2016-07-12
Frequently asked questions
- What is Gregory a Robertson MD a Professional Medical Corporation's NPI number?
- Gregory a Robertson MD a Professional Medical Corporation's National Provider Identifier (NPI) is 1417197443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gregory a Robertson MD a Professional Medical Corporation?
- Gregory a Robertson MD a Professional Medical Corporation is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory a Robertson MD a Professional Medical Corporation located?
- Gregory a Robertson MD a Professional Medical Corporation's practice location on file with NPPES is 20311 Sw Acacia St, Newport Beach, CA 92660-1733.
- What is Gregory a Robertson MD a Professional Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Gregory a Robertson MD a Professional Medical Corporation is (949) 891-1441.
- Does Gregory a Robertson MD a Professional Medical Corporation accept Medicare?
- Gregory a Robertson MD a Professional Medical Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Gregory a Robertson MD a Professional Medical Corporation?
- The authorized official listed on Gregory a Robertson MD a Professional Medical Corporation's NPPES record is Gregory Robertson, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gregory a Robertson MD a Professional Medical Corporation's NPI active?
- Yes — Gregory a Robertson MD a Professional Medical Corporation's NPI (1417197443) is active in the NPPES registry as of the last update on 2016-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.