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

Dr. William Ivan Buniak, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1699235648

Dr. William Ivan Buniak, DO is a Gastroenterology in Liverpool, New York. Qualified in 2019, 7 years ago. Practices with Gastroenterology and Hepatology of Central New York, PC, a 28-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
7
Licensed in
NY
In the registry since
2019
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

5112 W Taft Rd Ste H
Liverpool, NY 13088-4991
Phone: (315) 410-7499
Fax: (315) 410-7490
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 240 Meeting House Ln, Southampton, NY 11968-5009 — (631) 726-8200

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 337198 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1699235648
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 24, 2019
Last updated in NPPESJune 20, 2025
Certification dateJune 20, 2025
Mailing address5112 W Taft Rd Ste H, Liverpool, NY 13088-4991

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Gastroenterology And Hepatology Of Central New York, Pc — 28 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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