MRS. DESIREE S LEITHEM NURSE PRACTITIONER
NPI 1952564320
Nurse Practitioner - Family in San Diego, CA
About Mrs. Desiree S Leithem Nurse Practitioner NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. DESIREE S LEITHEM NURSE PRACTITIONER (NPI 1952564320) is an individual family provider in San Diego, California, licensed in California (18324) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mrs. Desiree S Leithem Nurse Practitioner is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Desiree Leithem reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1003934803 (California)
- 1,051 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 221 clinicians in this Medicare group
San Diego, CA 92127
- Reassigned Medicare billing, California enrollment
- 271 clinicians in this Medicare group
Laguna Beach, CA 92651
- Reassigned Medicare billing, California enrollment
- 110 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
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 Desiree Leithem's NPI number?
The NPI number for Desiree Leithem is 1952564320. It was assigned to this individual provider in the NPPES registry on July 7, 2008. The provider is also known as Miss Desiree S Marzwell Np.
Where is Desiree Leithem located?
Desiree Leithem practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (619) 543-3114.
What is Desiree Leithem's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Desiree Leithem enrolled in Medicare?
Yes. Desiree Leithem is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Desiree Leithem's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Desiree Leithem reassigns Medicare benefits to 4 organizations: Regents Of The University Of California (San Diego, CA), Regents Of The University Of California (San Diego, CA), Uc San Diego Health Community Group (San Diego, CA) and Mission Viejo Emergency Medical Associates, Inc. (Laguna Beach, 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 Desiree Leithem'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 Desiree Leithem was last updated on October 12, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Mrs. Desiree S Leithem, NURSE PRACTITIONER · NPI 1952564320
Family physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 7, 2008.
## Identity
- **NPI:** 1952564320 (Entity type: Individual)
- **Enumerated:** July 7, 2008
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 18324 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, San Diego, CA 92103-9000
- **Phone:** (619) 543-3114
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1487772380, San Diego, CA); Regents Of The University Of California (NPI 1780870899, San Diego, CA); Uc San Diego Health Community Group (NPI 1659864247, San Diego, CA); Mission Viejo Emergency Medical Associates, Inc. (NPI 1134355597, Laguna Beach, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 12, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1952564320) · Data from the CMS NPPES public registry.