MARGARET LONG
NPI 1487029476
Psychologist in Walnut Creek, CA
About Margaret Long NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET LONG (NPI 1487029476) is an individual psychologist in Walnut Creek, California, licensed in California (27854) and active in the NPI registry since December 2015. She is enrolled in Medicare PECOS.
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 (PECOS)
Margaret Long is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Margaret Long reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 22 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94595
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 Margaret Long's NPI number?
The NPI number for Margaret Long is 1487029476. It was assigned to this individual provider in the NPPES registry on December 2, 2015.
Where is Margaret Long located?
Margaret Long practices at 1940 Tice Valley Blvd Suite C, Walnut Creek, CA 94595. The listed phone number is (925) 988-0569.
What is Margaret Long's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Margaret Long enrolled in Medicare?
Yes. Margaret Long is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Margaret Long's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Long reassigns Medicare benefits to Help Administrative Services Inc (San Diego, 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 Margaret Long'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 Margaret Long was last updated on December 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.