DR. GERALDINA TERESA LIONETTI M.D.
NPI 1336387299
Pediatrics - Pediatric Rheumatology in San Francisco, CA
About Dr. Geraldina Teresa Lionetti M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GERALDINA TERESA LIONETTI M.D. (NPI 1336387299) is an individual pediatric rheumatology provider in San Francisco, California, licensed in California (A103471) and active in the NPI registry since January 2009. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Geraldina Teresa Lionetti M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Geraldina Lionetti reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 1,159 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 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.
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 FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
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 Geraldina Lionetti's NPI number?
The NPI number for Geraldina Lionetti is 1336387299. It was assigned to this individual provider in the NPPES registry on January 30, 2009.
Where is Geraldina Lionetti located?
Geraldina Lionetti practices at 533 Parnassus Ave Room U127, Box 0133, San Francisco, CA 94143. The listed phone number is (415) 514-3207.
What is Geraldina Lionetti's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Rheumatology, with taxonomy code 2080P0216X.
Is Geraldina Lionetti enrolled in Medicare?
Yes. Geraldina Lionetti is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Geraldina Lionetti's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Geraldina Lionetti reassigns Medicare benefits to 3 organizations: Ucsf Pediatrics Associates (San Francisco, CA), University Of California San Francisco (San Francisco, CA) and Ucsf Medical Group Business Services (San Francisco, 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 Geraldina Lionetti'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 Geraldina Lionetti was last updated on August 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Geraldina Teresa Lionetti, M.D. · NPI 1336387299
Pediatric Rheumatology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since January 30, 2009.
## Identity
- **NPI:** 1336387299 (Entity type: Individual)
- **Enumerated:** January 30, 2009
- **Primary specialty:** Pediatrics - Pediatric Rheumatology · taxonomy 2080P0216X
- **State license:** A103471 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 533 PARNASSUS AVE, ROOM U127, BOX 0133, San Francisco, CA 94143-2208
- **Phone:** (415) 514-3207 · **Fax:** (415) 476-3466
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Ucsf Pediatrics Associates (NPI 1376614016, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 4, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1336387299) · Data from the CMS NPPES public registry.