GIANCARLO ANDRES DIAZ MD
NPI 1538740394
Anesthesiology in San Antonio, TX

Q: What is Giancarlo Diaz's NPI number?

The NPI number for Giancarlo Diaz is 1538740394. It was assigned to this individual provider in the NPPES registry on April 14, 2021.

Q: What is Giancarlo Diaz's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Q: When was this NPI record last updated?

The NPPES record for Giancarlo Diaz was last updated on March 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since April 14, 2021PECOS EnrolledAccepts Medicare Assignment

4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000(210) 358-4775 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 4, 2026, Dec 23, 2025, Dec 18, 2025 and 2 more (5 updates tracked since 2021).

On this page

About Giancarlo Andres Diaz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GIANCARLO ANDRES DIAZ MD (NPI 1538740394) is an individual anesthesiology provider in San Antonio, Texas, licensed in Texas (W1774) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with Crouse Hospital, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1538740394

Entity TypeIndividualMale

Primary Taxonomy207L00000X

Provider Legal NameGIANCARLO ANDRES DIAZCredential: MD

Location Address4502 MEDICAL DRSan Antonio, TX 78229-4492

Mailing Address4502 Medical DrSan Antonio, TX 78229-4402 · (210) 358-4000 · Fax (210) 358-4775

Phone(210) 358-4000

Fax(210) 358-4775

Sole ProprietorNo

Medical School CMSOtherGraduated 2021

Enumeration DateApril 14, 2021

Last NPPES UpdateMarch 4, 20265 updates tracked since enumeration

NPPES CertifiedMarch 4, 2026

✔ NPI 1538740394 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians

Taxonomy Code207L00000X

License✔ Licensed in TX · W1774

Definition

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

4502 MEDICAL DR, San Antonio, TX 78229

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Giancarlo Andres Diaz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557878519

PECOS Enrollment IDI20250725001859, I20251230003906

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Crouse Hospital

Acute Care Hospitals · Syracuse, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330203

Location736 Irving AvenueSyracuse, NY 13210 · Onondaga County

Emergency services Birthing friendly

Methodist Hospital

Acute Care Hospitals · San Antonio, TX

4/5 CMS rating

OwnershipProprietary

CMS Certification Number450388

Location7700 Floyd Curl DrSan Antonio, TX 78229 · Bexar County

Emergency services Birthing friendly

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.

EDUARDO N. POLLONO MD

Internal Medicine (Cardiovascular Disease)