BENZION ISA PEREZ
NPI 1023137304
Marriage & Family Therapist in Montclair, CA
About Benzion Isa Perez NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BENZION ISA PEREZ (NPI 1023137304) is an individual marriage & family therapist in Montclair, California, licensed in California (LMFT49919) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Benzion Isa Perez is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Benzion Perez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chino Hills, CA 91709
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1770515280 (California)
- 5,228 clinicians in this Medicare group
Santa Clara, CA 95054
- Reassigned Medicare billing, California enrollment
- 1,607 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MONTCLAIR, CA 91763
MONTCLAIR, CA 91763
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 Benzion Perez's NPI number?
The NPI number for Benzion Perez is 1023137304. It was assigned to this individual provider in the NPPES registry on March 28, 2007.
Where is Benzion Perez located?
Benzion Perez practices at 5330 San Bernardino St, Montclair, CA 91763. The listed phone number is (626) 425-6875.
What is Benzion Perez's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Benzion Perez enrolled in Medicare?
Yes. Benzion Perez is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Benzion Perez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Benzion Perez reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Chino Hills, CA) and Sud Specialty Group - Ca (Santa Clara, 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 Benzion Perez'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 Benzion Perez was last updated on November 23, 2021. 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.
# Benzion Isa Perez · NPI 1023137304
Marriage & Family Therapist provider in Montclair, California. Individual provider, active in the CMS NPPES registry since March 28, 2007.
## Identity
- **NPI:** 1023137304 (Entity type: Individual)
- **Enumerated:** March 28, 2007
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **State license:** LMFT49919 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5330 SAN BERNARDINO ST, Montclair, CA 91763-2952
- **Phone:** (626) 425-6875
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1396287082, Chino Hills, CA); Sud Specialty Group - Ca (NPI 1972138238, Santa Clara, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 23, 2021
- **Other identifiers:** Other 7564A (CA); Other 7817A (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1023137304) · Data from the CMS NPPES public registry.