Thomas L. Mertz, DO
Listed as an allergist, with a practice address in Pittsburgh, Pennsylvania.
Practice location 1
Allergy and Asthma Associates of Pittsburgh
2585 Freeport Rd, Suite 210
Pittsburgh, PA 15238
From the records
- Specialty
- Allergist
- Records
- Medicare records: Internal Medicine (October 2026). Allergy specialty from the national provider registry.
- Medicare
- Accepts the Medicare-approved amount as payment in full (Medicare assignment), according to CMS’s file. This applies to Original Medicare; Medicare Advantage plans have their own networks. What assignment means
- Medical school
- Lake Erie College of Osteopathic Medicine, Erie, graduated 2004 (Medicare records)
- Registry record
- Last updated June 2023
- NPI
- 1942495825 (national provider registry)
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From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors