KA YING CHUI NP
NPI 1659007060
Nurse Practitioner - Family in Walnut Creek, CA
About Ka Ying Chui Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KA YING CHUI NP (NPI 1659007060) is an individual family provider in Walnut Creek, California, licensed in California (95021880) and active in the NPI registry since July 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2022).
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
Ka Ying Chui Np 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 Ka Ying Chui reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 650 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 3
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 94597 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
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 Ka Ying Chui's NPI number?
The NPI number for Ka Ying Chui is 1659007060. It was assigned to this individual provider in the NPPES registry on July 27, 2022.
Where is Ka Ying Chui located?
Ka Ying Chui practices at 1450 Treat Blvd # 120, Walnut Creek, CA 94597. The listed phone number is (925) 296-9720.
What is Ka Ying Chui's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Ka Ying Chui enrolled in Medicare?
Yes. Ka Ying Chui 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 Ka Ying Chui's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ka Ying Chui reassigns Medicare benefits to John Muir Physician Network (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 Ka Ying Chui'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 Ka Ying Chui was last updated on March 13, 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.
# Ka Ying Chui, NP · NPI 1659007060
Family physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since July 27, 2022.
## Identity
- **NPI:** 1659007060 (Entity type: Individual)
- **Enumerated:** July 27, 2022
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 95021880 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1450 TREAT BLVD # 120, Walnut Creek, CA 94597-2168
- **Phone:** (925) 296-9720
## 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:** John Muir Physician Network (NPI 1841407665, Walnut Creek, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** March 13, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1659007060) · Data from the CMS NPPES public registry.