SHANNON DAWN CHAIN MD
NPI 1447575428
Physical Medicine & Rehabilitation in Petaluma, CA
About Shannon Dawn Chain Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SHANNON DAWN CHAIN MD (NPI 1447575428) is an individual physical medicine & rehabilitation provider in Petaluma, California, licensed in Oregon (MD166551) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and maintains a secondary practice location in Medford.
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)
Shannon Dawn Chain Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Shannon Chain reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Chico, CA 95926
- Reassigned Medicare billing, California enrollment
- 17 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 Shannon Chain's NPI number?
The NPI number for Shannon Chain is 1447575428. It was assigned to this individual provider in the NPPES registry on April 1, 2010. The provider is also known as Shannon Dawn Dietzmann MD.
Where is Shannon Chain located?
Shannon Chain practices at 346 Lakeville Cir, Petaluma, CA 94954. The listed phone number is (628) 233-3013.
What is Shannon Chain's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Shannon Chain enrolled in Medicare?
Yes. Shannon Chain is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Shannon Chain's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shannon Chain reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Vallejo, CA) and Enloe Medical Center (Chico, 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 Shannon Chain'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 Shannon Chain was last updated on January 10, 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.