John Mantis, MD
NPI 1083763312 · Obstetrics & Gynecology Physician · Harbor City, CA
John Mantis, MD is a Obstetrics & Gynecology Physician provider in Harbor City, CA (NPI 1083763312).
Provider details
- NPI number
- 1083763312
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G39199 (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
- 2007-01-09
- Last updated
- 2008-09-23
Frequently asked questions
- What is John Mantis's NPI number?
- John Mantis's National Provider Identifier (NPI) is 1083763312, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mantis's specialty?
- John Mantis is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is John Mantis located?
- John Mantis's practice location on file with NPPES is 25825 Vermont Ave, Harbor City, CA 90710-3518.
- What is John Mantis's phone number?
- The practice phone number listed in the NPPES registry for John Mantis is (310) 325-5111.
- Is John Mantis's NPI active?
- Yes — John Mantis's NPI (1083763312) is active in the NPPES registry as of the last update on 2008-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.