DR. ANDRE GREGORY ATOIAN MD
NPI 1942592746
Anesthesiology in Los Angeles, CA
About Dr. Andre Gregory Atoian Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDRE GREGORY ATOIAN MD (NPI 1942592746) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A107342) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2007).
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 and accepts Medicare assignment
Dr. Andre Gregory Atoian 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 Reassignments
6Medicare enrollment records show Andre Atoian reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendale, CA 91205
- Reassigned Medicare billing, California enrollment
- 14 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 24 clinicians in this Medicare group
Thousand Oaks, CA 91360
- Reassigned Medicare billing, California enrollment
- 53 clinicians in this Medicare group
Irvine, CA 92618
- Reassigned Medicare billing, California enrollment
- 21 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 270 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 6
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.
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 Andre Atoian's NPI number?
The NPI number for Andre Atoian is 1942592746. It was assigned to this individual provider in the NPPES registry on May 11, 2011.
Where is Andre Atoian located?
Andre Atoian practices at 1559 Winona Blvd Apt 3B, Los Angeles, CA 90027. The listed phone number is (310) 951-8400.
What is Andre Atoian's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Andre Atoian enrolled in Medicare?
Yes. Andre Atoian 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 organizations bill Medicare for Andre Atoian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andre Atoian reassigns Medicare benefits to 6 organizations: Brookside Anesthesia Group (Glendale, CA), Perioperative Partners (Los Angeles, CA), Huntington Orthopedic Surgical Group (Pasadena, CA), Conejo Los Robles Anesthesiology Medical Group, Inc. (Thousand Oaks, CA), Dream Anesthesia, A Professional Medical Corporation (Irvine, CA) and 1 more organization, listed in the Medicare section above. 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 Andre Atoian'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 Andre Atoian was last updated on April 30, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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. Andre Gregory Atoian, MD · NPI 1942592746
Anesthesiology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 11, 2011.
## Identity
- **NPI:** 1942592746 (Entity type: Individual)
- **Enumerated:** May 11, 2011
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A107342 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1559 WINONA BLVD APT 3B, Los Angeles, CA 90027-5031
- **Phone:** (310) 951-8400
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Brookside Anesthesia Group (NPI 1669927810, Glendale, CA); Perioperative Partners (NPI 1710714944, Los Angeles, CA); Huntington Orthopedic Surgical Group (NPI 1851465603, Pasadena, CA); Conejo Los Robles Anesthesiology Medical Group, Inc. (NPI 1821171729, Thousand Oaks, CA); Dream Anesthesia, A Professional Medical Corporation (NPI 1912369414, Irvine, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2007
## Record status
- **NPPES last updated:** April 30, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1942592746) · Data from the CMS NPPES public registry.