CAROL JEAN TREINEN MD
NPI 1396817136
Physical Medicine & Rehabilitation in Redwood City, CA
About Carol Jean Treinen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAROL JEAN TREINEN MD (NPI 1396817136) is an individual physical medicine & rehabilitation provider in Redwood City, California, licensed in California (A63328) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
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
Carol Jean Treinen Md 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 Carol Treinen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Redwood City, CA 94063
- Reassigned Medicare billing, California enrollment
- 20,078 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.
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
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 Carol Treinen's NPI number?
The NPI number for Carol Treinen is 1396817136. It was assigned to this individual provider in the NPPES registry on November 15, 2006. The provider is also known as Carol Treinen Huang MD.
Where is Carol Treinen located?
Carol Treinen practices at 1150 Veterans Blvd, Redwood City, CA 94063. The listed phone number is (650) 299-2000.
What is Carol Treinen's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Carol Treinen enrolled in Medicare?
Yes. Carol Treinen 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 Carol Treinen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carol Treinen reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, 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 Carol Treinen'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 Carol Treinen 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.