Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Tierney Diehl, PA-C

Individual provider Physician Assistant · NPI 1427823772

Tierney Diehl, PA-C is a Physician Assistant in Pittsburgh, Pennsylvania. Registered with an NPI since 2023.

In the registry since
2023
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

3600 Forbes Ave
Pittsburgh, PA 15213-3410
Phone: (412) 432-7400
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X

Record details

NPI number1427823772
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedNovember 16, 2023
Last updated in NPPESFebruary 22, 2024
Certification dateNovember 21, 2023

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients142
Services billed 203 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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