Dr. William Paul Semanczuk, MD
- Medicare services, 2024
- 246
- Medicare patients, 2024
- 314
- Hospital affiliations
- 1
- Industry payments
- $880
- Medical group
- 1
- Practice address
- 160 North Midland Avenue, Nyack, NY 10960
- Practice phone
- Call (845) 348-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Semanczuk'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 Paul Semanczuk is an anesthesiologist in Nyack, New York
Dr. Semanczuk practices at Montefiore Nyack Hospital in Nyack, New York, part of Montefiore Einstein.
Dr. Semanczuk's NPI, 1720061146, was assigned on November 21, 2005. Dr. Semanczuk graduated from Rutgers New Jersey Medical School in 1999. Dr. Semanczuk holds New Jersey license 25MA07526400.
- NPI
- 1720061146NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971593260
- NPI enumeration date
- November 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (845) 348-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Paul Semanczuk practices at Montefiore Nyack Hospital in Nyack, New York
Dr. Semanczuk's primary practice is Montefiore Nyack Hospital, at 160 North Midland Avenue, Nyack, NY 10960 in Rockland County. The practice phone is (845) 348-2000.
- Montefiore Nyack Hospital160 North Midland Avenue, Nyack, NY 10960 · Rockland CountyPhone(845) 348-2000
Source: Dmand AI Affiliation Data
Dr. William Paul Semanczuk is affiliated with 1 site of care and 1 medical group
Dr. Semanczuk's primary practice is Montefiore Nyack Hospital in Nyack, New York, part of Montefiore Einstein. The medical group on file is North Shore-LIJ Anesthesiology, P.C.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Paul Semanczuk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Semanczuk practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Montefiore Nyack Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Montefiore Einstein and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Paul Semanczuk is one of 3,858 anesthesiologists in New York
Anesthesiology is Dr. Semanczuk's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Semanczuk is licensed in New Jersey.
Specialties and state licenses
- Anesthesiology, New JerseyPrimary
Anesthesiologists near Dr. Semanczuk
Counts of anesthesiologists 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 Paul Semanczuk billed Medicare for 246 services in 2024
CMS data shows 246 Medicare services from Dr. Semanczuk across 14 procedure codes in 2024, for 314 Medicare patients. Medicare paid $21,910 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Semanczuk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 972024: 200106%
- Surgery
- 2023: 392024: 4618%
Dr. Semanczuk compared with the New York median for anesthesiologists, 2024
- Dr. Semanczuk
- New York median
- Medicare services
- 246vs 763.2 times
- Medicare patients
- 314vs 1322.4 times
Medians across 3,723 anesthesiologists in New York with Dmand AI profiles that report each measure.
Dr. Semanczuk's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Semanczuk?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Semanczuk and other anesthesiologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Paul Semanczuk treated 314 Medicare patients in 2024, average age 76
CMS counts 314 Medicare patients who saw Dr. Semanczuk in 2024. The largest group is 75 to 84, with 124 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.61, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Semanczuk's median patient age at 61, with 62% women.
Dr. Semanczuk's Medicare patients by age, 2024
Dr. Semanczuk's Medicare patients by sex, 2024
- Women16653%
- Men14847%
Chronic conditions among Dr. Semanczuk's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis57%
- Diabetes40%
- Ischemic heart disease33%
- Chronic kidney disease31%
- Anxiety30%
- Mood disorders29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Semanczuk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. William Paul Semanczuk takes part in Medicare
Dr. Semanczuk accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William Paul Semanczuk received $880 in industry payments from 2016 to 2022
CMS Open Payments shows 13 general payments to Dr. Semanczuk from 10 drug and device companies from 2016 to 2022. Consulting fees make up the largest share, 57% of the total. Mindray DS USA, Inc. paid the most, $500.
General payments to Dr. Semanczuk by program year, 2016 to 2022
General payments to Dr. Semanczuk by kind, 2016 to 2022
- Consulting fees$50057%
- Food and beverage$38043%
Companies that paid Dr. Semanczuk the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Paul Semanczuk graduated from Rutgers New Jersey Medical School
Dr. Semanczuk graduated from Rutgers New Jersey Medical School in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Paul Semanczuk'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Paul Semanczuk
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 Paul Semanczuk's NPI number?
Dr. William Paul Semanczuk's NPI number is 1720061146. It was assigned on November 21, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Paul Semanczuk?
Dr. William Paul Semanczuk is an anesthesiologist in Nyack, New York. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. William Paul Semanczuk practice?
Dr. Semanczuk practices at 160 North Midland Avenue, Nyack, NY 10960. Dr. Semanczuk's primary practice is Montefiore Nyack Hospital in Nyack, New York, part of Montefiore Einstein.
What is Dr. William Paul Semanczuk's office phone number?
The practice phone on file for Dr. Semanczuk is (845) 348-2000.
What is Dr. William Paul Semanczuk's medical license number?
Dr. Semanczuk holds New Jersey license 25MA07526400.
Which hospitals is Dr. William Paul Semanczuk affiliated with?
Dr. Semanczuk practices at Montefiore Nyack Hospital in Nyack, New York.
What medical group is Dr. William Paul Semanczuk part of?
Dr. Semanczuk is linked to North Shore-LIJ Anesthesiology, P.C.
Does Dr. William Paul Semanczuk accept Medicare?
Yes. CMS data shows Dr. Semanczuk billed Medicare for 246 services in 2024, and Dr. Semanczuk accepts Medicare assignment.
How many Medicare patients does Dr. William Paul Semanczuk see?
CMS counts 314 Medicare patients who saw Dr. Semanczuk in 2024, with an average age of 76.
What services does Dr. William Paul Semanczuk bill to Medicare?
In 2024, Dr. Semanczuk's most billed Medicare services were surgery: brain, spine and nerves (64447), anesthesia (00811) and anesthesia (00731).
Show 3 more questionsShow fewer questions
Where did Dr. William Paul Semanczuk go to medical school?
Dr. Semanczuk graduated from Rutgers New Jersey Medical School in 1999.
Has Dr. William Paul Semanczuk received payments from drug or device companies?
CMS Open Payments shows $880 in general payments to Dr. Semanczuk from 10 companies from 2016 to 2022. The largest total came from Mindray DS USA, Inc.
How long has Dr. William Paul Semanczuk been practicing?
Dr. Semanczuk graduated from medical school in 1999, 27 years ago.
Selling to anesthesiology practices?
See anesthesiologists in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card