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Emergency Medicine

Aaron A. Guess, DO

Works at hospitals in Rockwall, TX · Denison, TX · Texas

Summary

Aaron A. Guess, DO (Emergency Medicine) is listed by Medicare at 2 hospitals in Rockwall, TX and Denison, TX. NPI 1881915254. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Aaron A. Guess, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
20Years since medical school (graduated 2006)
University Of North Texas Hsc, College Of Osteopathic MedMedical school
MaleGender (as listed)
Ies Central Texas PLLCGroup practice (+1 more)

Quick answers

Which hospitals does Aaron A. Guess work at?
Medicare's official clinician data lists Aaron A. Guess at 2 hospitals: Texas Health Presbyterian Hospital Rockwall and Texoma Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Aaron A. Guess see patients?
Medicare's clinician data lists 3 practice locations, including Anna, TX, Sherman, TX and Denison, TX. Call before your visit to confirm the address.
What is Aaron A. Guess's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Aaron A. Guess accept Medicare assignment?
Yes. Medicare's clinician data says Aaron A. Guess 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 Aaron A. Guess?
(214) 831-2600, as listed in official Medicare / NPI Registry data.
What is Aaron A. Guess's NPI number?
1881915254. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Aaron A. Guess works

Medicare's Facility Affiliation Data lists Aaron A. Guess at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Aaron A. Guess is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Aaron A. Guess as a member of these groups (CMS data updated 2026-10-02).

  • Ies Central Texas PLLC34 clinicians in the group
  • Level One Emergency Physicians LLC29 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Texas →

Other emergency medicine doctors in Anna

Clinicians with the same Medicare primary specialty in Anna, TX — not a recommendation.

All emergency medicine doctors in Anna →

Clinician information

CredentialDO
Medical schoolUniversity Of North Texas Hsc, College Of Osteopathic Med
Graduation year2006
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1881915254
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians