Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gonzalo A Diaz, MD

Individual provider Sleep Medicine (Internal Medicine) Physician · NPI 1134129240

Gonzalo A Diaz, MD practises Sleep Medicine in El Paso, Texas. Qualified in 1975, 51 years ago. Practices with Gonzalo a Diaz, a 7-clinician group, works from 6 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
51
Licensed in
TX
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4305 N Mesa St Ste B
El Paso, TX 79902-1124
Phone: (915) 779-7378
Fax: (915) 779-2822
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (5)

  • 1155 Commerce Dr Ste G, Las Cruces, NM 88011-8257 — (575) 647-5337
  • 1204 Main St Ne Ste A, Los Lunas, NM 87031-7423 — (505) 388-2015
  • 1009 Golf Course Rd Se Ste 109, Rio Rancho, NM 87124-4705 — (505) 891-3344
  • 1651 Galisteo St, Santa Fe, NM 87505-4752 — (505) 395-5315
  • 4305 N Mesa St, El Paso, TX 79902-1123 — (915) 532-2477

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence G4109 (TX)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence G4109 (TX)

Record details

NPI number1134129240
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 29, 2005
Last updated in NPPESJanuary 30, 2025
Certification dateJanuary 30, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtySLEEP MEDICINE
Medical schoolOTHER
Graduated 1975 (51 years in practice)
Group practice Gonzalo A Diaz — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations10 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,335
Services billed 4,456 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,712 58 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Gonzalo a Diaz

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 7 clinicians in the practice; 5 are shown here.

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