MS. NANCY SINGER FNP-C
NPI 1891282448
Nurse Practitioner - Family in San Rafael, CA
About Ms. Nancy Singer Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. NANCY SINGER FNP-C (NPI 1891282448) is an individual family provider in San Rafael, California, licensed in California (95012068) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2017).
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
Ms. Nancy Singer Fnp-c 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 Reassignment
Medicare enrollment records show Nancy Singer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Francisco, CA 94111
- Reassigned Medicare billing, California enrollment
- 291 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 5
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 94903 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 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN RAFAEL, CA 94903
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 Nancy Singer's NPI number?
The NPI number for Nancy Singer is 1891282448. It was assigned to this individual provider in the NPPES registry on April 19, 2018.
Where is Nancy Singer located?
Nancy Singer practices at 1004 Northgate Dr, San Rafael, CA 94903. The listed phone number is (415) 590-6150.
What is Nancy Singer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Nancy Singer enrolled in Medicare?
Yes. Nancy Singer 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 organization bills Medicare for Nancy Singer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Singer reassigns Medicare benefits to One Medical Group, Inc. (San Francisco, 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 Nancy Singer'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 Nancy Singer was last updated on October 8, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.