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Dr. Thomas Mertz, DO

Dr. Thomas Mertz, DO

Age 52 Allergy & Immunology M
(15) 15 reviews
Accepting New Patients


Dr. Thomas Mertz, DO is an Allergy & Immunology Specialist in Pittsburgh, PA. Dr. Mertz completed a residency at University of Connecticut Medical Center. They currently practice at Allergy and Asthma Associates of Pittsburgh and are affiliated with UPMC St. Margaret and West Penn Hospital. Dr. Mertz is board certified in Pediatrics and accepts accepts multiple insurance plans.


  • Penn State-Allergy and Imunology, Fellowship Hospital — 2012
  • University of Connecticut Medical Center, Residency Hospital — 2008
  • University of Connecticut, Internship Hospital — 2005
  • Lake Erie College Of Osteopathic Medicin--Erie, Medical School — 2004
  • West Virginia Univ, Other Education — 2000
  • West Virginia University, Undergraduate School — 1998

Insurance Accepted

  • Aetna
  • Amerihealth
  • Anthem
  • Anthem Blue Cross Blue Shield
  • Blue Cross Blue Shield
  • Capital Blue Cross
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • Commercial Insurance Company
  • Coventry Health Care
  • First Health
  • Guardian
  • Highmark Blue Cross Blue Shield
  • Humana
  • MultiPlan
  • Mutual of Omaha
  • UnitedHealthCare
  • UPMC
  • UPMC Health Plan

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Feb 26, 2022
Out of the 10 Doctors I have seen at UPMC and AHN, Dr. Mertz was the only doctor to figure out that I had an IgG deficiency. He reviewed all of my records from when I was a child, during and after chemotherapy, did a number of test to figure out what I had. I’d recommend him to my friends and family. 10/10.
— Feb 26, 2022
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Thomas Mertz, DO. To arrange an appointment, call the number on Dr. Mertz's profile.

Dr. Mertz frequently treats the following conditions: Allergic Rhinitis, Pollen Allergy and Animal Allergies. See more on Sharecare.

Dr. Thomas Mertz, DO is affiliated with UPMC St. Margaret and West Penn Hospital.

Yes, Dr. Thomas Mertz, DO holds board certification in Pediatrics.

Hospital Affiliations

  • UPMC St. Margaret
  • West Penn Hospital


  1. Allergy and Asthma Associates of Pittsburgh

    1. 1
      Allergy and Asthma Associates
      2585 Freeport Rd Ste 210, Pittsburgh, PA 15238 (412) 828-3800
  1. Allergy and Asthma Associates of Pittsburgh

    1. 2
      Allergy & Asthma Associates of Pittsburgh
      320 Fort Duquesne Blvd Ste 380, Pittsburgh, PA 15222 (412) 471-3818