MAMDOUH HANNA MD
NPI 1043742455
Psychiatry & Neurology - Psychiatry in Brea, CA
About Mamdouh Hanna Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAMDOUH HANNA MD (NPI 1043742455) is an individual psychiatry provider in Brea, California, licensed in California (A157174) and active in the NPI registry since April 2017. He 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)
Mamdouh Hanna Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mamdouh Hanna reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 755 clinicians in this Medicare group
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 149 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92821 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BREA, CA 92821
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 Mamdouh Hanna's NPI number?
The NPI number for Mamdouh Hanna is 1043742455. It was assigned to this individual provider in the NPPES registry on April 3, 2017.
Where is Mamdouh Hanna located?
Mamdouh Hanna practices at 265 S Randolph Ave Ste 160, Brea, CA 92821. The listed phone number is (909) 558-9532.
What is Mamdouh Hanna's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Mamdouh Hanna enrolled in Medicare?
Yes. Mamdouh Hanna is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mamdouh Hanna's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mamdouh Hanna reassigns Medicare benefits to 2 organizations: Department Of State Hospitals (Norwalk, CA) and Comprehensive Psychiatric Services, A Medical Group (Walnut Creek, 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 Mamdouh Hanna'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 Mamdouh Hanna was last updated on October 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days 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.
# Mamdouh Hanna, MD · NPI 1043742455
Psychiatry physician in Brea, California. Individual provider, active in the CMS NPPES registry since April 3, 2017.
## Identity
- **NPI:** 1043742455 (Entity type: Individual)
- **Enumerated:** April 3, 2017
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** A157174 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 265 S RANDOLPH AVE STE 160, Brea, CA 92821-5785
- **Phone:** (909) 558-9532
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Department Of State Hospitals (NPI 1265406565, Norwalk, CA); Comprehensive Psychiatric Services, A Medical Group (NPI 1184785834, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1043742455) · Data from the CMS NPPES public registry.