STEPHANIE CHAN FNP-BC
NPI 1477280030
Nurse Practitioner in Walnut Creek, CA
About Stephanie Chan Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHANIE CHAN FNP-BC (NPI 1477280030) is an individual nurse practitioner in Walnut Creek, California, licensed in California (NP95033145) and active in the NPI registry since August 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2020).
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
Stephanie Chan Fnp-bc 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 Reassignments
2Medicare enrollment records show Stephanie Chan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 650 clinicians in this Medicare group
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Optum Medical Care PC
- 1,601 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 13
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 94598 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
WALNUT CREEK, CA 94598
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 Stephanie Chan's NPI number?
The NPI number for Stephanie Chan is 1477280030. It was assigned to this individual provider in the NPPES registry on August 4, 2022.
Where is Stephanie Chan located?
Stephanie Chan practices at 1479 Ygnacio Valley Rd Ste 150, Walnut Creek, CA 94598. The listed phone number is (925) 296-7340.
What is Stephanie Chan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Stephanie Chan enrolled in Medicare?
Yes. Stephanie Chan 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 organizations bill Medicare for Stephanie Chan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Chan reassigns Medicare benefits to 2 organizations: John Muir Physician Network (Walnut Creek, CA) and Optum Medical Care, P.C. (Mount Kisco, NY). 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 Stephanie Chan'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 Stephanie Chan was last updated on December 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.
# Stephanie Chan, FNP-BC · NPI 1477280030
Nurse Practitioner physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since August 4, 2022.
## Identity
- **NPI:** 1477280030 (Entity type: Individual)
- **Enumerated:** August 4, 2022
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** NP95033145 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1479 YGNACIO VALLEY RD STE 150, Walnut Creek, CA 94598-2954
- **Phone:** (925) 296-7340
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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): John Muir Physician Network (NPI 1841407665, Walnut Creek, CA); Optum Medical Care, P.C. (NPI 1982643003, Mount Kisco, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** December 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1477280030) · Data from the CMS NPPES public registry.