Marek N. Denisiuk, DO
Orthopaedic Surgery Physician · Dover, DE
Marek N. Denisiuk, DO is an orthopaedic surgery physician with a practice address in Dover, Delaware, and NPI 1518457860, issued on May 12, 2018. Check the license (Delaware C2-0024568, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Marek N. Denisiuk
- Credential
- DO
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- C2-0024568 DE
Self-reported in NPPES; status is on the state search - Practice location
- 651 Bay Road, Suite F1, Dover, DE 19901
- Phone
- (302) 730-4366
- Enumerated
- May 12, 2018
- Record last updated
- Sep 18, 2024
- Fax
- (302) 730-0231
- Medicare enrollment
- Enrolled (PECOS I20241028002691); accepts Medicare assignment
- Medical or professional school
- Rowan University School Of Osteopathic Medicine, 2018
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 76 in Delaware → Look up another NPI →
Verify Marek N. Denisiuk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0024568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
23 Medicare Part D claims, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 18 claims were for opioids.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $932.55
14 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bayhealth Medical Center, IncSmyrna, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marek N. Denisiuk among 76 orthopaedic surgery physician records in Delaware
Marek N. Denisiuk, DO is one of 76 orthopaedic surgery physician records with a practice address in Delaware. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 93% of them.
- NPI issued2018 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2018 · median 2006 among the 52 with a school on file
- Record last updated2024 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Delaware
There are 76 orthopaedic surgery physician records in Delaware.
All 76 in Delaware → Every provider in Dover → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- John Burger, DODover, DE 199011194089912
- Darshdeep Singh, D.O.Dover, DE 199011639334683
- J Easter, M.D.Dover, DE 199041104820620
- Jonathan Kates, MDDover, DE 199041215005004
- Stephen Manifold, M.D.Dover, DE 199041598768806
- Michael Mattern, M.D.Dover, DE 199041811910391
- Lawrence Piccioni, MDDover, DE 199041487651865
- Eric Schwartz, MDDover, DE 199041811991565
Common questions
What is Marek N. Denisiuk, DO's NPI number?
Marek N. Denisiuk, DO's National Provider Identifier (NPI) is 1518457860, issued on May 12, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Marek N. Denisiuk, DO located?
The NPPES record lists a practice address at 651 Bay Road, Suite F1, Dover, DE, 19901. Phone: (302) 730-4366. Providers update this record themselves, so call before visiting.
How can I verify Marek N. Denisiuk, DO's license?
NPPES lists Delaware license number C2-0024568, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marek N. Denisiuk, DO prescribe under Medicare Part D?
In 2024, Marek N. Denisiuk, DO had 23 Medicare Part D claims; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.