DR. WILLIAM IVAN BUNIAK DO
NPI 1699235648
Internal Medicine - Gastroenterology in Liverpool, NY

Q: What is William Buniak's NPI number?

The NPI number for William Buniak is 1699235648. It was assigned to this individual provider in the NPPES registry on March 24, 2019.

Q: What is William Buniak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for William Buniak was last updated on June 20, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since March 24, 2019PECOS EnrolledAccepts Medicare Assignment

5112 W TAFT RD STE H, LIVERPOOL, NY 13088(315) 410-7499(315) 410-7490 Get Directions Write a Review

NPPES record last updated: June 20, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jun 20, 2025, Mar 24, 2019 (2 updates tracked since 2019).

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About Dr. William Ivan Buniak Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM IVAN BUNIAK DO (NPI 1699235648) is an individual gastroenterology provider in Liverpool, New York, licensed in New York (337198) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, is affiliated with St Joseph's Hospital Health Center, and maintains a secondary practice location in Southampton.

NPPES Registry Identity

NPI1699235648

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. WILLIAM IVAN BUNIAKCredential: DO

Location Address5112 W TAFT RD STE HLiverpool, NY 13088-4991

Mailing Address5112 W Taft Rd Ste HLiverpool, NY 13088-4991 · (315) 452-3235 · Fax (315) 452-5726

Phone(315) 410-7499

Fax(315) 410-7490

Sole ProprietorYes

Medical School CMSOtherGraduated 2019

Enumeration DateMarch 24, 2019

Last NPPES UpdateJune 20, 20252 updates tracked since enumeration

NPPES CertifiedJune 20, 2025

✔ NPI 1699235648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NY · 337198

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

5112 W TAFT RD STE H, Liverpool, NY 13088

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Secondary Practice Location 1

Location 1240 Meeting House LnSouthampton, NY 11968-5009 · Phone (631) 726-8200

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Ivan Buniak Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385151497

PECOS Enrollment IDI20250724001998

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Joseph's Hospital Health Center

Acute Care Hospitals · Syracuse, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330140

Location301 Prospect AvenueSyracuse, NY 13203 · Onondaga County

Emergency services Birthing friendly

Samaritan Medical Center

Acute Care Hospitals · Watertown, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330157

Location830 Washington StreetWatertown, NY 13601 · Jefferson County

Emergency services Birthing friendly

Oswego Hospital

Acute Care Hospitals · Oswego, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330218

Location110 West Sixth StreetOswego, NY 13126 · Oswego County

Emergency services Birthing friendly

Auburn Community Hospital

Acute Care Hospitals · Auburn, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330235

Location17 Lansing StreetAuburn, NY 13021 · Cayuga County

Emergency services Birthing friendly

University Hospital S U N Y Health Science Center

Acute Care Hospitals · Syracuse, NY

3/5 CMS rating

OwnershipGovernment - State

CMS Certification Number330241

Location750 East Adams StreetSyracuse, NY 13210 · Onondaga County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 13088 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.40 typical visit price

range $54.87 – $166.88

Typical copayment $31.60 (range $13.71 – $41.72)

Most-billed visit code 99204

Established Patient

$97.08 typical visit price

range $17.54 – $136.14

Typical copayment $24.27 (range $4.38 – $34.03)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SARAH WELLS FNP

Nurse Practitioner (Family)