STEPHANIE MARTHA CHIU NP
NPI 1043091663
Nurse Practitioner in Walnut Creek, CA
About Stephanie Martha Chiu Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHANIE MARTHA CHIU NP (NPI 1043091663) is an individual nurse practitioner in Walnut Creek, California, licensed in California (95027633) and active in the NPI registry since October 2023. 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)
Stephanie Martha Chiu Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Stephanie Chiu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 60 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 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.
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.
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 Chiu's NPI number?
The NPI number for Stephanie Chiu is 1043091663. It was assigned to this individual provider in the NPPES registry on October 10, 2023.
Where is Stephanie Chiu located?
Stephanie Chiu practices at 500 Lennon Ln, Walnut Creek, CA 94598. The listed phone number is (925) 939-9610.
What is Stephanie Chiu's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Stephanie Chiu enrolled in Medicare?
Yes. Stephanie Chiu is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Stephanie Chiu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephanie Chiu reassigns Medicare benefits to Michael P Sherman MD Phd, A Medical Corporation (Walnut Creek, 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 Stephanie Chiu'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 Chiu was last updated on October 10, 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.
# Stephanie Martha Chiu, NP · NPI 1043091663
Nurse Practitioner physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since October 10, 2023.
## Identity
- **NPI:** 1043091663 (Entity type: Individual)
- **Enumerated:** October 10, 2023
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 95027633 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 500 LENNON LN, Walnut Creek, CA 94598-2415
- **Phone:** (925) 939-9610
## 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:** Michael P Sherman MD Phd, A Medical Corporation (NPI 1831201912, Walnut Creek, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 10, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1043091663) · Data from the CMS NPPES public registry.