ANN PAN NP-C
NPI 1891266839
Nurse Practitioner in Stanford, CA
About Ann Pan Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN PAN NP-C (NPI 1891266839) is an individual nurse practitioner in Stanford, California, licensed in California (95010595) and active in the NPI registry since December 2018. She is enrolled in Medicare PECOS.
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 (PECOS)
Ann Pan Np-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ann Pan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
San Francisco, CA 94124
- Reassigned Medicare billing, California enrollment
- 1,573 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 94305 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Ann Pan's NPI number?
The NPI number for Ann Pan is 1891266839. It was assigned to this individual provider in the NPPES registry on December 17, 2018.
Where is Ann Pan located?
Ann Pan practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 498-3333.
What is Ann Pan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Ann Pan enrolled in Medicare?
Yes. Ann Pan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ann Pan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Pan reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and City & County Of San Francisco (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 Ann Pan'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 Ann Pan was last updated on March 26, 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.
# Ann Pan, NP-C · NPI 1891266839
Nurse Practitioner physician in Stanford, California. Individual provider, active in the CMS NPPES registry since December 17, 2018.
## Identity
- **NPI:** 1891266839 (Entity type: Individual)
- **Enumerated:** December 17, 2018
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 95010595 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 498-3333
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); City & County Of San Francisco (NPI 1184351082, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 26, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1891266839) · Data from the CMS NPPES public registry.