Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

John Russell Liszka, CNP

Individual provider Family Nurse Practitioner · NPI 1811725054

John Russell Liszka, CNP is a Nurse Practitioner in Cleveland, Ohio. Graduated from University of Cincinnati College of Medicine in 2023, 3 years ago. Practices with Cleveland Clinic, a 6,935-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
3
Trained at
University of Cincinnati College of Medicine
Licensed in
OH
In the registry since
2024
What do these letters mean?
CNP — Certified Nurse Practitioner
A certified nurse practitioner.

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Practice location Address checks out

9500 Euclid Ave
Cleveland, OH 44195-0001
Phone: (216) 444-2200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence APRN.CNP.0035834 (OH)

Record details

NPI number1811725054
Entity typeIndividual (Type 1)
GenderMale
Credentials CNP
Sole proprietorNo
NPI enumeratedJuly 22, 2024
Last updated in NPPESJuly 22, 2024
Certification dateJuly 21, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolUNIVERSITY OF CINCINNATI COLLEGE OF MEDICINE
Graduated 2023 (3 years in practice)
Group practice Cleveland Clinic — 6935 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients18
Services billed 35 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Cleveland Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6935 clinicians in the practice; 12 are shown here.

Other providers in Cleveland