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Marc Gianzero, M.D.
NPI 1417930975 · Anesthesiology Physician · Costa Mesa, CA
Marc Gianzero, M.D. is a Anesthesiology Physician provider in Costa Mesa, CA (NPI 1417930975).
Provider details
- NPI number
- 1417930975
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A54882 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
1640 Newport Blvd Ste 100
Costa Mesa, CA 92627-3786
Phone: (949) 478-8000
Fax: (949) 478-8001
Street-level locationGet directions
Mailing address
Po Box 1809
Orange, CA 92856-0809
Registry dates
- Enumerated
- 2005-11-29
- Last updated
- 2019-05-14
Frequently asked questions
- What is Marc Gianzero's NPI number?
- Marc Gianzero's National Provider Identifier (NPI) is 1417930975, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Gianzero's specialty?
- Marc Gianzero is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Gianzero located?
- Marc Gianzero's practice location on file with NPPES is 1640 Newport Blvd Ste 100, Costa Mesa, CA 92627-3786.
- What is Marc Gianzero's phone number?
- The practice phone number listed in the NPPES registry for Marc Gianzero is (949) 478-8000.
- Is Marc Gianzero's NPI active?
- Yes — Marc Gianzero's NPI (1417930975) is active in the NPPES registry as of the last update on 2019-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.