MR. MICHAEL WALKER
NPI 1821801739
Counselor - Mental Health in Pasadena, CA
About Mr. Michael Walker NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. MICHAEL WALKER (NPI 1821801739) is an individual mental health provider in Pasadena, California and active in the NPI registry since January 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2021).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mr. Michael Walker is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michael Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95113
- Reassigned Medicare billing, California enrollment
- 3,139 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.
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 Michael Walker's NPI number?
The NPI number for Michael Walker is 1821801739. It was assigned to this individual provider in the NPPES registry on January 27, 2025.
Where is Michael Walker located?
Michael Walker practices at 691 Zanja St, Pasadena, CA 91103. The listed phone number is (626) 664-4302.
What is Michael Walker's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.
Is Michael Walker enrolled in Medicare?
Yes. Michael Walker is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michael Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Walker reassigns Medicare benefits to Grow Healthcare Group PC (San Jose, 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 Michael Walker'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 Michael Walker was last updated on June 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Mr. Michael Walker · NPI 1821801739
Mental Health provider in Pasadena, California. Individual provider, active in the CMS NPPES registry since January 27, 2025.
## Identity
- **NPI:** 1821801739 (Entity type: Individual)
- **Enumerated:** January 27, 2025
- **Primary specialty:** Counselor - Mental Health · taxonomy 101YM0800X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 691 ZANJA ST, Pasadena, CA 91103-2462
- **Phone:** (626) 664-4302
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Grow Healthcare Group PC (NPI 1154994846, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2021
## Record status
- **NPPES last updated:** June 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1821801739) · Data from the CMS NPPES public registry.