MRS. MYHANH PHAM NGUYEN N.P.
NPI 1124206453
Nurse Practitioner - Family in Walnut Creek, CA
About Mrs. Myhanh Pham Nguyen N.p. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MYHANH PHAM NGUYEN N.P. (NPI 1124206453) is an individual family provider in Walnut Creek, California, licensed in California (16473) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS and maintains a secondary practice location in Hayward.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mrs. Myhanh Pham Nguyen N.p. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Myhanh Nguyen reassigns Medicare billing to 3 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
Richmond, CA 94801
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Fremont, CA 94538
- Reassigned Medicare billing, California enrollment
- 103 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Myhanh Nguyen's NPI number?
The NPI number for Myhanh Nguyen is 1124206453. It was assigned to this individual provider in the NPPES registry on February 8, 2008. The provider is also known as Hanh Thi Pham.
Where is Myhanh Nguyen located?
Myhanh Nguyen practices at 122 La Casa Via Ste 120, Walnut Creek, CA 94598. The listed phone number is (925) 941-4049.
What is Myhanh Nguyen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Myhanh Nguyen enrolled in Medicare?
Yes. Myhanh Nguyen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Myhanh Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Myhanh Nguyen reassigns Medicare benefits to 3 organizations: John Muir Physician Network (Walnut Creek, CA), Permanente Medical Group Inc (Richmond, CA) and Emergency Physicians Associates Fremont PC (Fremont, 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 Myhanh Nguyen'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 Myhanh Nguyen was last updated on January 11, 2022. 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. Myhanh Pham Nguyen, N.P. · NPI 1124206453
Family physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since February 8, 2008.
## Identity
- **NPI:** 1124206453 (Entity type: Individual)
- **Enumerated:** February 8, 2008
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 16473 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 122 LA CASA VIA STE 120, Walnut Creek, CA 94598-3019
- **Phone:** (925) 941-4049
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): John Muir Physician Network (NPI 1841407665, Walnut Creek, CA); Permanente Medical Group Inc (NPI 1235226531, Richmond, CA); Emergency Physicians Associates Fremont PC (NPI 1790250967, Fremont, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 11, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1124206453) · Data from the CMS NPPES public registry.