DR. SUSAN J NATHAN PH.D.
NPI 1144227513
Psychologist in Laguna Woods, CA
About Dr. Susan J Nathan Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SUSAN J NATHAN PH.D. (NPI 1144227513) is an individual psychologist in Laguna Woods, California, licensed in California (PSY18217) and active in the NPI registry since June 2005. She is enrolled in Medicare PECOS and is a graduate of Other (1978).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Susan J Nathan Ph.d. 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 Susan Nathan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chino, CA 91710
- Reassigned Medicare billing, California enrollment
- 52 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 Susan Nathan's NPI number?
The NPI number for Susan Nathan is 1144227513. It was assigned to this individual provider in the NPPES registry on June 30, 2005.
Where is Susan Nathan located?
Susan Nathan practices at 428 Avenida Sevilla Unit C, Laguna Woods, CA 92637. The listed phone number is (949) 690-0171.
What is Susan Nathan's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Susan Nathan enrolled in Medicare?
Yes. Susan Nathan 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 Susan Nathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Susan Nathan reassigns Medicare benefits to Quest Health Management Psychological Corporation (Chino, 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 Susan Nathan'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 Susan Nathan was last updated on February 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.