Quick answers
- Which hospitals does Omar R. Diaz work at?
- Medicare's official clinician data lists Omar R. Diaz at 3 hospitals: Laredo Medical Center, Methodist Hospital and Methodist Hospital Stone Oak. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Omar R. Diaz see patients?
- Medicare's clinician data lists 4 practice locations, including Laredo, TX and San Antonio, TX. Call before your visit to confirm the address.
- What is Omar R. Diaz's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Omar R. Diaz accept Medicare assignment?
- Yes. Medicare's clinician data says Omar R. Diaz accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Omar R. Diaz?
- (956) 796-5000, as listed in official Medicare / NPI Registry data.
- What is Omar R. Diaz's NPI number?
- 1548765845. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Omar R. Diaz works
Medicare's Facility Affiliation Data lists Omar R. Diaz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Laredo Medical CenterLaredo, TX · Acute Care Hospital · CCN 450029
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · CCN 450388
- Methodist Hospital Stone OakSan Antonio, TX · Acute Care Hospital · CCN 670055
Practice locations
Addresses where Omar R. Diaz is enrolled with Medicare (CMS data updated 2026-10-02).
- 1700 E Saunders StLaredo, TX 78041 (956) 796‑5000
- 3402 E Del Mar Blvd, Suite 184Laredo, TX 78041 (956) 267‑4667
- 6700 W Ih, 10 Methodist Hospital TexsanSan Antonio, TX 78201 (210) 736‑6700
- 9811 McPherson RdLaredo, TX 78045 (956) 796‑3900
Group practices
Medicare enrollment lists Omar R. Diaz as a member of these groups (CMS data updated 2026-10-02).
- Emergency Medicine Services of TX, PLLC400 clinicians in the group
- Laredo Emergency Medicine Associates PA46 clinicians in the group
- Wellness Whisper PLLC2 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Laredo
Clinicians with the same Medicare primary specialty in Laredo, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548765845 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians