DR. ABRAHAM ROSENBAUM MD
NPI 1871543785
Anesthesiology in Orange, CA
About Dr. Abraham Rosenbaum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ABRAHAM ROSENBAUM MD (NPI 1871543785) is an individual anesthesiology provider in Orange, California, licensed in California (A95276) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Dr. Abraham Rosenbaum 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 Abraham Rosenbaum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 420 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.
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.
ORANGE, CA 92868
ORANGE, CA 92868
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 Abraham Rosenbaum's NPI number?
The NPI number for Abraham Rosenbaum is 1871543785. It was assigned to this individual provider in the NPPES registry on May 11, 2006.
Where is Abraham Rosenbaum located?
Abraham Rosenbaum practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8068.
What is Abraham Rosenbaum's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Abraham Rosenbaum enrolled in Medicare?
Yes. Abraham Rosenbaum 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 Abraham Rosenbaum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abraham Rosenbaum reassigns Medicare benefits to Regents Of The University Of (Orange, 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 Abraham Rosenbaum'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 Abraham Rosenbaum was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Abraham Rosenbaum, MD · NPI 1871543785
Anesthesiology physician in Orange, California. Individual provider, active in the CMS NPPES registry since May 11, 2006.
## Identity
- **NPI:** 1871543785 (Entity type: Individual)
- **Enumerated:** May 11, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A95276 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-8068 · **Fax:** (714) 456-3765
## 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:** Regents Of The University Of (NPI 1487602546, Orange, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Other 000F52000 (CA); Medicare ID-Type Unspecified WF5200A (CA); Medicare UPIN I26873 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1871543785) · Data from the CMS NPPES public registry.