DR. ALEXANDER JOHN CONSTAS M.D.
NPI 1841602349
Pediatrics - Pediatric Critical Care Medicine in Los Angeles, CA
About Dr. Alexander John Constas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDER JOHN CONSTAS M.D. (NPI 1841602349) is an individual pediatric critical care medicine provider in Los Angeles, California, licensed in California (A191485) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS and maintains a secondary practice location in Oak Lawn.
NPPES Registry Identity
Specialties & Licenses 2
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 (PECOS)
Dr. Alexander John Constas M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Alexander Constas 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 Alexander Constas's NPI number?
The NPI number for Alexander Constas is 1841602349. It was assigned to this individual provider in the NPPES registry on June 2, 2014.
Where is Alexander Constas located?
Alexander Constas practices at 4650 W Sunset Blvd, Los Angeles, CA 90027. The listed phone number is (323) 660-2450.
What is Alexander Constas's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.
Is Alexander Constas enrolled in Medicare?
Yes. Alexander Constas is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Alexander Constas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Constas 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 Alexander Constas'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 Alexander Constas was last updated on April 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Alexander John Constas, M.D. · NPI 1841602349
Pediatric Critical Care Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since June 2, 2014.
## Identity
- **NPI:** 1841602349 (Entity type: Individual)
- **Enumerated:** June 2, 2014
- **Primary specialty:** Pediatrics - Pediatric Critical Care Medicine · taxonomy 2080P0203X
- **State license:** A191485 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4650 W SUNSET BLVD, Los Angeles, CA 90027-6062
- **Phone:** (323) 660-2450
## 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:** 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
## Record status
- **NPPES last updated:** April 17, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1841602349) · Data from the CMS NPPES public registry.