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

Individual provider Anesthesiology Physician · NPI 1538740394

Giancarlo Andres Diaz, MD is an Anesthesiology in San Antonio, Texas. Qualified in 2021, 5 years ago. Practices with Lone Star Anesthesia Partners PLLC, a 61-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
5
Licensed in
TX
In the registry since
2021
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

4502 Medical Dr
San Antonio, TX 78229-4492
Phone: (210) 358-4000
Fax: (210) 358-4775
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1310 McCullough Ave, San Antonio, TX 78212-5601 — (210) 757-2200
  • 5106 W Loop 1604 N, San Antonio, TX 78251-4408 — (726) 243-2000

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence W1774 (TX)

Record details

NPI number1538740394
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2021
Last updated in NPPESMarch 4, 2026
Certification dateMarch 4, 2026

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Lone Star Anesthesia Partners Pllc — 61 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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