MARY LORAINE SULLIVAN MD
NPI 1588893564
Obstetrics & Gynecology in El Cajon, CA
About Mary Loraine Sullivan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY LORAINE SULLIVAN MD (NPI 1588893564) is an individual obstetrics & gynecology provider in El Cajon, California, licensed in California (132556) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in La Mesa, and is a graduate of Texas Tech University Health Science Center School Of Medicine (2009).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary Loraine Sullivan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Mary Sullivan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
El Cajon, CA 92020
- Reassigned Medicare billing, California enrollment
- 1,100 clinicians in this Medicare group
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Escondido, CA 92025
- Reassigned Medicare billing, California enrollment
- 332 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92020 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Sullivan's NPI number?
The NPI number for Mary Sullivan is 1588893564. It was assigned to this individual provider in the NPPES registry on July 10, 2009.
Where is Mary Sullivan located?
Mary Sullivan practices at 133 W Main St # 240, El Cajon, CA 92020. The listed phone number is (619) 401-0404.
What is Mary Sullivan's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Mary Sullivan enrolled in Medicare?
Yes. Mary Sullivan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mary Sullivan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Sullivan reassigns Medicare benefits to 3 organizations: Family Health Centers Of San Diego, Inc. (El Cajon, CA), Southern California Permanente Medical Group (San Diego, CA) and Neighborhood Healthcare (Escondido, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Sullivan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary Sullivan was last updated on April 2, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mary Loraine Sullivan, MD · NPI 1588893564
Obstetrics & Gynecology physician in El Cajon, California. Individual provider, active in the CMS NPPES registry since July 10, 2009.
## Identity
- **NPI:** 1588893564 (Entity type: Individual)
- **Enumerated:** July 10, 2009
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 132556 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 133 W MAIN ST # 240, El Cajon, CA 92020-3315
- **Phone:** (619) 401-0404
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Family Health Centers Of San Diego, Inc. (NPI 1932561198, El Cajon, CA); Southern California Permanente Medical Group (NPI 1225060742, San Diego, CA); Neighborhood Healthcare (NPI 1598703647, Escondido, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Texas Tech University Health Science Center School Of Medicine, class of 2009
## Record status
- **NPPES last updated:** April 2, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1588893564) · Data from the CMS NPPES public registry.