Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Katharine Theresa Ressler, PA-C

Individual provider Gynecology Physician · NPI 1013486448

Katharine Theresa Ressler, PA-C is a Physician Assistant in Erie, Pennsylvania. Qualified in 2018, 8 years ago. Practices with Oncology Hematology Association Inc, a 189-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Colorado and Pennsylvania.

Years since qualifying
8
Licensed in
CO, PA
In the registry since
2018
Specialties on file
2
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

2500 W 12th St
Erie, PA 16505-4500
Phone: (814) 836-2600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 2121 E Harmony Rd Unit 170, Fort Collins, CO 80528-3413 — (970) 493-6337
  • 6767 29th St Fl 1, Greeley, CO 80634-5474 — (970) 652-2870
  • 2500 Rocky Mountain Ave Ste 2100, Loveland, CO 80538-9004 — (970) 203-7080

Specialties & licences

Gynecology Physician (primary) Taxonomy 207VG0400X · Licence MA060328 (PA)
Physician Assistant Taxonomy 363A00000X · Licence PA.0009930 (CO)

Record details

NPI number1013486448
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedNovember 14, 2018
Last updated in NPPESJuly 22, 2026
Certification dateJuly 22, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Oncology Hematology Association Inc — 189 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients238
Services billed 377 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Oncology Hematology Association Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 189 clinicians in the practice; 12 are shown here.

Other providers in Erie