Dr. William Ivan Buniak, DO
- Hospital affiliations
- 5
- Industry payments
- $371
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2019
- Practice address
- 5112 West Taft Rd Suite E, Liverpool, NY 13088
- Practice phone
- Call (315) 449-2208
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Digestive Disease Center of CNY
Surgery Center - Medicare-Certified · Liverpool, New York
Find Dr. Buniak's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William Ivan Buniak is a gastroenterologist in Liverpool, New York
Dr. Buniak practices at Digestive Disease Center of CNY in Liverpool, New York.
Dr. Buniak's NPI, 1699235648, was assigned on March 24, 2019. Dr. Buniak holds New York license 337198.
- NPI
- 1699235648NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385151497
- NPI enumeration date
- March 24, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (315) 449-2208
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Ivan Buniak practices at Digestive Disease Center of CNY in Liverpool, New York
Dr. Buniak's primary practice is Digestive Disease Center of CNY, at 5112 West Taft Rd Suite E, Liverpool, NY 13088. The practice phone is (315) 449-2208.
- Digestive Disease Center of CNY5112 West Taft Rd Suite E, Liverpool, NY 13088Phone(315) 449-2208
Source: Dmand AI Affiliation Data
Dr. William Ivan Buniak is affiliated with 7 sites of care and 1 medical group
Dr. Buniak's primary practice is Digestive Disease Center of CNY in Liverpool, New York. Dr. Buniak is also affiliated with St. Joseph's Health Hospital. The medical group on file is Gastroenterology & Hepatology of CNY. Dmand AI also links Dr. Buniak to 4 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Ivan Buniak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buniak practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Digestive Disease Center of CNY | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Ivan Buniak is one of 1,583 gastroenterologists in New York
Gastroenterology is Dr. Buniak's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Buniak is licensed in New York.
Specialties and state licenses
- Gastroenterology, New YorkPrimary
Gastroenterologists near Dr. Buniak
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William Ivan Buniak's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Dr. Buniak's median patient age at 60, with 54% women.
Dr. Buniak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women54%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. William Ivan Buniak ranks in the 89th percentile for colonoscopy in Medicare
Dr. Buniak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 153 procedures of colonoscopy by Dr. Buniak, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Buniak ranks in Medicare procedure volume
- Colonoscopy
- 89th percentile153 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 78th percentile109 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
Dr. William Ivan Buniak received $371 in industry payments from 2024 to 2025
CMS Open Payments shows 9 general payments to Dr. Buniak from 3 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $170.
General payments to Dr. Buniak by program year, 2024 to 2025
Companies that paid Dr. Buniak the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William Ivan Buniak's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William Ivan Buniak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William Ivan Buniak's NPI number?
Dr. William Ivan Buniak's NPI number is 1699235648. It was assigned on March 24, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. William Ivan Buniak?
Dr. William Ivan Buniak is a gastroenterologist in Liverpool, New York. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. William Ivan Buniak practice?
Dr. Buniak practices at 5112 West Taft Rd Suite E, Liverpool, NY 13088. Dr. Buniak's primary practice is Digestive Disease Center of CNY in Liverpool, New York. Dmand AI also links Dr. Buniak to 4 hospitals and 1 group practice or clinic.
What is Dr. William Ivan Buniak's office phone number?
The practice phone on file for Dr. Buniak is (315) 449-2208.
What is Dr. William Ivan Buniak's medical license number?
Dr. Buniak holds New York license 337198, one of 2 state licenses on file.
Which hospitals is Dr. William Ivan Buniak affiliated with?
Dr. Buniak is affiliated with St. Joseph's Health Hospital. Dmand AI links Dr. Buniak to 4 more hospitals.
What medical group is Dr. William Ivan Buniak part of?
Dr. Buniak is linked to Gastroenterology & Hepatology of CNY.
Does Dr. William Ivan Buniak accept Medicare?
Yes. CMS lists Dr. Buniak as accepting Medicare assignment.
Has Dr. William Ivan Buniak received payments from drug or device companies?
CMS Open Payments shows $371 in general payments to Dr. Buniak from 3 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Dr. William Ivan Buniak been practicing?
Dr. Buniak graduated from medical school in 2019, 7 years ago.
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