DR. GRAY L ALLEN MD
NPI 1336258342
Anesthesiology in Albuquerque, NM
About Dr. Gray L Allen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRAY L ALLEN MD (NPI 1336258342) is an individual anesthesiology provider in Albuquerque, New Mexico, licensed in New Mexico (MD2005-0146) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Gray L Allen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Gray Allen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Albuquerque, NM 87106
- Reassigned Medicare billing, New Mexico enrollment
- 2,105 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.
ALBUQUERQUE, NM 87108
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 Gray Allen's NPI number?
The NPI number for Gray Allen is 1336258342. It was assigned to this individual provider in the NPPES registry on August 30, 2006.
Where is Gray Allen located?
Gray Allen practices at 1501 San Pedro Dr SE, Albuquerque, NM 87108. The listed phone number is (505) 265-1711.
What is Gray Allen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gray Allen enrolled in Medicare?
Yes. Gray Allen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Gray Allen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gray Allen reassigns Medicare benefits to Unm Medical Group Inc (Albuquerque, NM). 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 Gray Allen'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 Gray Allen was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Gray L Allen, MD · NPI 1336258342
Anesthesiology physician in Albuquerque, New Mexico. Individual provider, active in the CMS NPPES registry since August 30, 2006.
## Identity
- **NPI:** 1336258342 (Entity type: Individual)
- **Enumerated:** August 30, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD2005-0146 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** 1501 SAN PEDRO DR SE, Albuquerque, NM 87108-5153
- **Phone:** (505) 265-1711
## 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:** Unm Medical Group Inc (NPI 1831218627, Albuquerque, NM), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1336258342) · Data from the CMS NPPES public registry.