Mary Sullivan, MD
NPI 1588893564 · Obstetrics & Gynecology Physician · El Cajon, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Sullivan, MD is a Obstetrics & Gynecology Physician provider in El Cajon, CA (NPI 1588893564).
Provider details
- NPI number
- 1588893564
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 132556 (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
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 8851 Center Dr Ste 210La Mesa, CA 91942-3045Phone: (619) 463-7775
Registry dates
- Enumerated
- 2009-07-10
- Last updated
- 2018-04-02
Frequently asked questions
- What is Mary Sullivan's NPI number?
- Mary Sullivan's National Provider Identifier (NPI) is 1588893564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Sullivan's specialty?
- Mary Sullivan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Sullivan located?
- Mary Sullivan's practice location on file with NPPES is 133 W Main St # 240, El Cajon, CA 92020-3315.
- What is Mary Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Mary Sullivan is (619) 401-0404.
- Does Mary Sullivan accept Medicare?
- Mary Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Sullivan's NPI active?
- Yes — Mary Sullivan's NPI (1588893564) is active in the NPPES registry as of the last update on 2018-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.