DR. DEVIN COLIN OLIVER WALKER DO
NPI 1801384599
Psychiatry & Neurology - Child & Adolescent Psychiatry in Fontana, CA
About Dr. Devin Colin Oliver Walker Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DEVIN COLIN OLIVER WALKER DO (NPI 1801384599) is an individual child & adolescent psychiatry provider in Fontana, California, licensed in California (20A17649) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2018).
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
Dr. Devin Colin Oliver Walker Do 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 Devin Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1952333460 (California)
- 5,228 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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FONTANA, CA 92335
FONTANA, CA 92335
FONTANA, CA 92335
FONTANA, CA 92335
FONTANA, CA 92335
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 Devin Walker's NPI number?
The NPI number for Devin Walker is 1801384599. It was assigned to this individual provider in the NPPES registry on April 27, 2018.
Where is Devin Walker located?
Devin Walker practices at 17234 Valley Blvd, Fontana, CA 92335. The listed phone number is (909) 427-5603.
What is Devin Walker's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.
Is Devin Walker enrolled in Medicare?
Yes. Devin Walker 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 Devin Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Devin Walker reassigns Medicare benefits to Southern California Permanente Medical Group (Fontana, 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 Devin 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 Devin Walker was last updated on May 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Devin Colin Oliver Walker, DO · NPI 1801384599
Child & Adolescent Psychiatry physician in Fontana, California. Individual provider, active in the CMS NPPES registry since April 27, 2018.
## Identity
- **NPI:** 1801384599 (Entity type: Individual)
- **Enumerated:** April 27, 2018
- **Primary specialty:** Psychiatry & Neurology - Child & Adolescent Psychiatry · taxonomy 2084P0804X
- **State license:** 20A17649 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 17234 VALLEY BLVD, Fontana, CA 92335
- **Phone:** (909) 427-5603
## 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:** Southern California Permanente Medical Group (NPI 1689606196, Fontana, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** May 1, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1801384599) · Data from the CMS NPPES public registry.