MS. MIREILLE C CASTAN PSY.D.
NPI 1710087770
Psychologist - Clinical in Patton, CA
About Ms. Mireille C Castan Psy.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MIREILLE C CASTAN PSY.D. (NPI 1710087770) is an individual clinical provider in Patton, California, licensed in California (PSY 20951) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2004).
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 and accepts Medicare assignment
Ms. Mireille C Castan Psy.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 Reassignments
2Medicare enrollment records show Mireille Castan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rancho Cucamonga, CA 91730
- Reassigned Medicare billing, California enrollment
- 4 clinicians in this Medicare group
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 755 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92369 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
PATTON, CA 92369
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 Mireille Castan's NPI number?
The NPI number for Mireille Castan is 1710087770. It was assigned to this individual provider in the NPPES registry on September 22, 2006.
Where is Mireille Castan located?
Mireille Castan practices at 3102 E. Highland Avenue Medical Staff Office, Patton, CA 92369. The listed phone number is (909) 425-7679.
What is Mireille Castan's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Mireille Castan enrolled in Medicare?
Yes. Mireille Castan 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 organizations bill Medicare for Mireille Castan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mireille Castan reassigns Medicare benefits to 2 organizations: Gregor Medical Corporation (Rancho Cucamonga, CA) and Department Of State Hospitals (Norwalk, 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 Mireille Castan'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 Mireille Castan was last updated on November 7, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.