MRS. NANCY ELIZABETH COOK NP
NPI 1639314719
Nurse Practitioner - Adult Health in Walnut Creek, CA
About Mrs. Nancy Elizabeth Cook Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. NANCY ELIZABETH COOK NP (NPI 1639314719) is an individual adult health provider in Walnut Creek, California, licensed in California (15413) and active in the NPI registry since December 2008. She is enrolled in Medicare PECOS and is a graduate of Other (2001).
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
Mrs. Nancy Elizabeth Cook 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 Nancy Cook reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Richmond, CA 94801
- Reassigned Medicare billing, California enrollment
- 20,078 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 94596 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94596
WALNUT CREEK, CA 94596
WALNUT CREEK, CA 94596
WALNUT CREEK, CA 94596
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 Cook's NPI number?
The NPI number for Nancy Cook is 1639314719. It was assigned to this individual provider in the NPPES registry on December 3, 2008.
Where is Nancy Cook located?
Nancy Cook practices at 1656 N California Blvd Suite 300, Walnut Creek, CA 94596. The listed phone number is (502) 417-4344.
What is Nancy Cook's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Nancy Cook enrolled in Medicare?
Yes. Nancy Cook 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 Cook's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Cook reassigns Medicare benefits to Permanente Medical Group Inc (Richmond, 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 Cook'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 Cook was last updated on December 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mrs. Nancy Elizabeth Cook, NP · NPI 1639314719
Adult Health physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since December 3, 2008.
## Identity
- **NPI:** 1639314719 (Entity type: Individual)
- **Enumerated:** December 3, 2008
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 15413 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1656 N CALIFORNIA BLVD, SUITE 300, Walnut Creek, CA 94596
- **Phone:** (502) 417-4344
## 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:** Permanente Medical Group Inc (NPI 1235226531, Richmond, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** December 30, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1639314719) · Data from the CMS NPPES public registry.