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

Mary K Sliviak, FNP

Individual provider Family Nurse Practitioner · NPI 1578501359

Mary K Sliviak, FNP is a Nurse Practitioner in Cooperstown, New York. Graduated from State University of New York at Stony Brook, School of Medicine in 1995, 31 years ago. Practices with Mary Imogene Bassett Hospital, a 779-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
31
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

1 Atwell Rd
Cooperstown, NY 13326-1301 Not confirmed with CMS for 12 years — call before visiting
Phone: (607) 547-3909
Fax: (607) 547-6325
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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 F332410 (NY)

Record details

NPI number1578501359
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorYes
NPI enumeratedJune 3, 2006
Last updated in NPPESDecember 16, 2013

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice Mary Imogene Bassett Hospital — 779 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 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 patients162
Services billed 343 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Mary Imogene Bassett Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 779 clinicians in the practice; 12 are shown here.

Other providers in Cooperstown