MARGARETTA EMILY GERGEN DO
NPI 1164984423
Family Medicine in San Diego, CA
About Margaretta Emily Gergen Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARETTA EMILY GERGEN DO (NPI 1164984423) is an individual family medicine provider in San Diego, California, licensed in California (20A23629) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS and is a graduate of Philadelphia College Of Osteopathic Medicine (2019).
NPPES Registry Identity
Specialties & Licenses
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
Margaretta Emily Gergen Do 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
2Medicare enrollment records show Margaretta Gergen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92101
- Reassigned Medicare billing, California enrollment
- 1,100 clinicians in this Medicare group
Washington, DC 20005
- Reassigned Medicare billing, District of Columbia enrollment
- 76 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 92101 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92101
SAN DIEGO, CA 92101
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 Margaretta Gergen's NPI number?
The NPI number for Margaretta Gergen is 1164984423. It was assigned to this individual provider in the NPPES registry on April 4, 2019.
Where is Margaretta Gergen located?
Margaretta Gergen practices at 1250 6th Ave Ste 100, San Diego, CA 92101. The listed phone number is (619) 515-2430.
What is Margaretta Gergen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Margaretta Gergen enrolled in Medicare?
Yes. Margaretta Gergen 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 Margaretta Gergen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaretta Gergen reassigns Medicare benefits to 2 organizations: Family Health Centers Of San Diego Inc (San Diego, CA) and Whitman-Walker Clinic, Inc (Washington, DC). 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 Margaretta Gergen'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 Margaretta Gergen was last updated on January 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Margaretta Emily Gergen, DO · NPI 1164984423
Family Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since April 4, 2019.
## Identity
- **NPI:** 1164984423 (Entity type: Individual)
- **Enumerated:** April 4, 2019
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A23629 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1250 6TH AVE STE 100, San Diego, CA 92101-4368
- **Phone:** (619) 515-2430
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Family Health Centers Of San Diego Inc (NPI 1588901045, San Diego, CA); Whitman-Walker Clinic, Inc (NPI 1184616617, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Philadelphia College Of Osteopathic Medicine, class of 2019
## Record status
- **NPPES last updated:** January 13, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1164984423) · Data from the CMS NPPES public registry.