Dr. Thomas L. Mertz, DO

Allergy & Immunology, Internal Medicine more...

(1 review)
Accepting new patients 14 years of experience


Dr. Thomas L. Mertz, DO is an Allergist & Immunologist in Pittsburgh, PA. He specializes in Allergy & Immunology, Internal Medicine, and Pediatrics, has 14 years of experience, and is board certified. He graduated from Penn State-Allergy and Imunology and he is affiliated with West Penn Hospital and UPMC St. Margaret.

Dr. Mertz works at Allergy and Asthma Associates. He frequently treats conditions like Food Poisoning, Allergic Rhinitis along with other conditions at varying...


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Accepting New Patients

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Conditions Treated and Procedures Performed

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Experience & Treatment Frequency

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Allergic Conjunctivitis
Allergic Rhinitis
Animal Allergies
Allergic Conjunctivitis
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Treatment Frequency

Very High
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Allergic Rhinitis
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Treatment Frequency

Very High
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Animal Allergies
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Treatment Frequency

Very High
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Ratings & Reviews

Average provider rating


Based on 1 review

Time with patient

Accuracy of diagnosis

Listening skills

Clear explanations

Trust in decision making

Post visit follow-up

Office & Staff Evaluation

Office appearance

out of 5

Ease of scheduling

out of 5

Friendly staff

out of 5

Billing matters

out of 5

Average wait time

not available

Group 24

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Patient Reviews

1 review

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1 star
Jan 27, 2018

I see Dr. Mertz at the downtown office and would recommend him to all my family and friends. He achieved what other doctor's could not and that was find what was causing my head congestion and allergies. I have one negative complaint and that is...


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About Dr. Thomas L. Mertz, DO


  • Allergy & Immunology
  • Internal Medicine
  • Pediatrics

Years of Experience

14 years of experience

Languages Spoken

  • English



NPI Number


Education & Certifications

Medical Education

  • Lake Erie College Of Osteopathic Medicin--Erie
  • West Virginia University


  • University of Connecticut
  • University Of Connecticut Medical Center


  • Penn State-Allergy and Imunology

Board Certifications

  • ABMS
  • ABMS
  • Allergy & Immunology


Allergy and Asthma Associates

2585 Freeport Rd Ste 210,

Pittsburgh, PA 15238


Admitting Hospitals

  • UPMC St. Margaret
  • West Penn Hospital

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