DR. MARY ELIZABETH PATTERSON M.D.
NPI 1912112020
Pediatrics - Pediatric Endocrinology in San Diego, CA
About Dr. Mary Elizabeth Patterson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY ELIZABETH PATTERSON M.D. (NPI 1912112020) is an individual pediatric endocrinology provider in San Diego, California, licensed in California (A104058) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Telford.
NPPES Registry Identity
Specialties & Licenses 2
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 (PECOS)
Dr. Mary Elizabeth Patterson M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Patterson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 562 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 92123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92123
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 Patterson's NPI number?
The NPI number for Mary Patterson is 1912112020. It was assigned to this individual provider in the NPPES registry on May 11, 2007.
Where is Mary Patterson located?
Mary Patterson practices at 7910 Frost St Ste 200, San Diego, CA 92123. The listed phone number is (858) 966-4032.
What is Mary Patterson's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Endocrinology, with taxonomy code 2080P0205X.
Is Mary Patterson enrolled in Medicare?
Yes. Mary Patterson is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Patterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Patterson reassigns Medicare benefits to Rady Children's Hospital San Diego (San Diego, CA). The 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 Patterson'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 Patterson was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Mary Elizabeth Patterson, M.D. · NPI 1912112020
Pediatric Endocrinology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since May 11, 2007.
## Identity
- **NPI:** 1912112020 (Entity type: Individual)
- **Enumerated:** May 11, 2007
- **Primary specialty:** Pediatrics - Pediatric Endocrinology · taxonomy 2080P0205X
- **State license:** A104058 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 7910 FROST ST STE 200, San Diego, CA 92123-2776
- **Phone:** (858) 966-4032
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Rady Children's Hospital San Diego (NPI 1669617197, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1912112020) · Data from the CMS NPPES public registry.