NATHAN J ROBISON MD
NPI 1235391996
Pediatrics - Pediatric Hematology-Oncology in Los Angeles, CA
About Nathan J Robison Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NATHAN J ROBISON MD (NPI 1235391996) is an individual pediatric hematology-oncology provider in Los Angeles, California, licensed in Massachusetts (238951) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses 2
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
Nathan J Robison Md 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 Nathan Robison reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Childrens Hospital Los Angeles Medical Group Inc
- 1,281 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 Nathan Robison's NPI number?
The NPI number for Nathan Robison is 1235391996. It was assigned to this individual provider in the NPPES registry on June 25, 2008.
Where is Nathan Robison located?
Nathan Robison practices at 4650 W Sunset Blvd, Los Angeles, CA 90027. The listed phone number is (323) 361-3550.
What is Nathan Robison's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Nathan Robison enrolled in Medicare?
Yes. Nathan Robison 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 Nathan Robison's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathan Robison reassigns Medicare benefits to Children's Hospital Los Angeles Medical Group, Inc. (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 Nathan Robison'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 Nathan Robison was last updated on March 29, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Nathan J Robison, MD · NPI 1235391996
Pediatric Hematology-Oncology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since June 25, 2008.
## Identity
- **NPI:** 1235391996 (Entity type: Individual)
- **Enumerated:** June 25, 2008
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** 238951 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 4650 W SUNSET BLVD, Los Angeles, CA 90027-6062
- **Phone:** (323) 361-3550 · **Fax:** (323) 361-8052
## 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:** Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** March 29, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1235391996) · Data from the CMS NPPES public registry.