GONZALO A DIAZ
NPI 1326261249
Internal Medicine - Sleep Medicine in El Paso, TX
About Gonzalo A Diaz NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GONZALO A DIAZ (NPI 1326261249), doing business as El Paso Sleep Disorders Center, is a healthcare organization registered as a sleep medicine in El Paso, Texas and active in the NPI registry since April 2007. The organization maintains 6 additional practice locations and lists Gonzalo A Diaz, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 6
Other Identifiers 4
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Gonzalo A Diaz is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
15Medicare enrollment records show 15 clinicians reassign Medicare billing to Gonzalo A Diaz, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 6 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 4
Clinicians, nearest first (15)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Gonzalo A Diaz's NPI number?
The NPI number for Gonzalo A Diaz is 1326261249. It was assigned to this organization in the NPPES registry on April 10, 2007. The provider is doing business as El Paso Sleep Disorders Center.
Where is Gonzalo A Diaz located?
Gonzalo A Diaz is located at 4305 N Mesa St Ste B, El Paso, TX 79902. The listed phone number is (915) 779-7378.
What is Gonzalo A Diaz's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.
Is Gonzalo A Diaz enrolled in Medicare?
Yes. Gonzalo A Diaz is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Gonzalo A Diaz?
According to the CMS Revalidation Reassignment List (October 2026 release), 15 clinicians in 4 Medicare specialties reassign their Medicare billing to Gonzalo A Diaz. A 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 the clinician's services. The largest specialties are Nurse Practitioner (10), Sleep Medicine (3) and Internal Medicine (1). Of these, 2 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Gonzalo A Diaz accept?
Health plans from Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc. and WellPoint list Gonzalo A Diaz as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gonzalo A Diaz was last updated on March 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Gonzalo A Diaz · NPI 1326261249
Sleep Medicine organization in El Paso, Texas. Organization record, active in the CMS NPPES registry since April 10, 2007.
## Identity
- **NPI:** 1326261249 (Entity type: Organization)
- **Enumerated:** April 10, 2007
- **Primary specialty:** Internal Medicine - Sleep Medicine · taxonomy 207RS0012X
- **Also known as:** EL PASO SLEEP DISORDERS CENTER (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Gonzalo Diaz, OWNER
## Practice location
- **Address:** 4305 N MESA ST STE B, El Paso, TX 79902-1124
- **Phone:** (915) 779-7378 · **Fax:** (915) 779-2822
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 15 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (10), Sleep Medicine (3), Internal Medicine (1); 2 practice at this address and 6 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 19, 2026
- **Other identifiers:** Medicaid 138134507 (TX); Medicaid 000U9973 (NM); Medicaid 79570054 (NM); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1326261249) · Data from the CMS NPPES public registry.