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Allergy/Immunology

Stephen M. Olmstead, DO

Works at hospitals in Greenville, TX · Texas

Summary

Stephen M. Olmstead, DO (Allergy/Immunology) is listed by Medicare at 1 hospital in Greenville, TX. NPI 1346298890. 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 Stephen M. Olmstead, 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

Allergy/ImmunologyPrimary specialty
YesAccepts Medicare assignment
37Years since medical school (graduated 1989)
Oklahoma State University College Of Osteopathic MedicineMedical school
MaleGender (as listed)
Allergy Partners of Texas IncGroup practice

Quick answers

Which hospitals does Stephen M. Olmstead work at?
Medicare's official clinician data lists Stephen M. Olmstead at 1 hospital: Hunt Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Stephen M. Olmstead see patients?
Medicare's clinician data lists 1 practice location in Garland, TX. Call before your visit to confirm the address.
What is Stephen M. Olmstead's specialty?
Medicare lists Allergy/Immunology as the primary specialty, and also Internal Medicine.
Does Stephen M. Olmstead accept Medicare assignment?
Yes. Medicare's clinician data says Stephen M. Olmstead 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 Stephen M. Olmstead?
(972) 272-4463, as listed in official Medicare / NPI Registry data.
What is Stephen M. Olmstead's NPI number?
1346298890. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Stephen M. Olmstead works

Medicare's Facility Affiliation Data lists Stephen M. Olmstead 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 Stephen M. Olmstead is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Stephen M. Olmstead as a member of this group (CMS data updated 2026-10-02).

  • Allergy Partners of Texas Inc22 clinicians in the group

Specialties

Find other Allergy/Immunology doctors in Texas →

Other allergist and immunologists in Garland

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

All allergist and immunologists in Garland →

Clinician information

CredentialDO
Medical schoolOklahoma State University College Of Osteopathic Medicine
Graduation year1989
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1346298890
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