PETER ADAMCZYK, MD, INC.
NPI 1427481522
Psychiatry & Neurology - Neurology in Castro Valley, CA
About Peter Adamczyk, Md, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PETER ADAMCZYK, MD, INC. (NPI 1427481522) is a healthcare organization registered as a neurology in Castro Valley, California and active in the NPI registry since August 2013. The organization lists Peter R. Adamczyk, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Peter Adamczyk, Md, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Peter Adamczyk, MD, Inc., which bills Medicare for the services this clinician delivers.
Clinician (1)
Castro Valley, CA 94546
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 Peter Adamczyk, MD, Inc.'s NPI number?
The NPI number for Peter Adamczyk, MD, Inc. is 1427481522. It was assigned to this organization in the NPPES registry on August 13, 2013.
Where is Peter Adamczyk, MD, Inc. located?
Peter Adamczyk, MD, Inc. is located at 20055 Lake Chabot Rd Suite 300, Castro Valley, CA 94546. The listed phone number is (510) 538-7738.
What is Peter Adamczyk, MD, Inc.'s specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Peter Adamczyk, MD, Inc. enrolled in Medicare?
Yes. Peter Adamczyk, MD, Inc. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Peter Adamczyk, MD, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Neurology) reassigns their Medicare billing to Peter Adamczyk, MD, Inc.. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Peter Adamczyk, MD, Inc. was last updated on August 28, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Peter Adamczyk, Md, Inc. · NPI 1427481522
Neurology organization in Castro Valley, California. Organization record, active in the CMS NPPES registry since August 13, 2013.
## Identity
- **NPI:** 1427481522 (Entity type: Organization)
- **Enumerated:** August 13, 2013
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **Organization subpart:** No
- **Authorized official:** Peter Adamczyk, PRESIDENT
## Practice location
- **Address:** 20055 LAKE CHABOT RD, SUITE 300, Castro Valley, CA 94546-5331
- **Phone:** (510) 538-7738 · **Fax:** (510) 538-7777
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Neurology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 28, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1427481522) · Data from the CMS NPPES public registry.