SAMER ALKASSIS
NPI 1124681515
Internal Medicine - Hematology & Oncology in Irvine, CA
About Samer Alkassis NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SAMER ALKASSIS (NPI 1124681515) is an individual hematology & oncology provider in Irvine, California, licensed in California (A178143) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in Detroit, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Samer Alkassis 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 Samer Alkassis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 1,766 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 92604 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.
IRVINE, CA 92604
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 Samer Alkassis's NPI number?
The NPI number for Samer Alkassis is 1124681515. It was assigned to this individual provider in the NPPES registry on April 21, 2019.
Where is Samer Alkassis located?
Samer Alkassis practices at 4746 Barranca Pkwy, Irvine, CA 92604. The listed phone number is (949) 653-2959.
What is Samer Alkassis's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Samer Alkassis enrolled in Medicare?
Yes. Samer Alkassis 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 Samer Alkassis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Samer Alkassis reassigns Medicare benefits to The Regents Of The University Of California (Los Angeles, 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 Samer Alkassis'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 Samer Alkassis was last updated on August 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Samer Alkassis · NPI 1124681515
Hematology & Oncology physician in Irvine, California. Individual provider, active in the CMS NPPES registry since April 21, 2019.
## Identity
- **NPI:** 1124681515 (Entity type: Individual)
- **Enumerated:** April 21, 2019
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A178143 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4746 BARRANCA PKWY, Irvine, CA 92604-4728
- **Phone:** (949) 653-2959
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The Regents Of The University Of California (NPI 1235107566, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** August 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1124681515) · Data from the CMS NPPES public registry.