Dean Nick Cassimatis, M.D.
Gastroenterology Physician · New Windsor, NY
Dean Nick Cassimatis, M.D. is a gastroenterology physician with a practice address in New Windsor, New York, and NPI 1821097742, issued on Jul 21, 2005. Check the license (New York 175299, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Dean Nick Cassimatis
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 175299 NY
Self-reported in NPPES; status is on the state search - Practice location
- 277 Quassaick Ave, New Windsor, NY 12553
- Phone
- (845) 565-5630
- Enumerated
- Jul 21, 2005
- Record last updated
- Oct 3, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (845) 565-5643
- Medicaid ID
- 01233398 NY
- Medicare enrollment
- Enrolled (PECOS I20041204000231); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1986
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Also registered at 277 Quassaick Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Seth Levin, M.D.Gastroenterology Physician1528067444
- Rachel Paskey, FNPFamily Nurse Practitioner1659659340
- Murali Perumal, M.D.Gastroenterology Physician1538169461
- Thomas Scileppi, M.D.Gastroenterology Physician1598765430
Verify Dean Nick Cassimatis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 175299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,408 Medicare Part D claims for 720 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole1,049 claims
- Pantoprazole Sodium411 claims
- Famotidine319 claims
- Sutab121 claims
- Sod Sulf-Potass Sulf-Mag Sulf31 claims
- Sucralfate31 claims
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,955.56
128 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Horizon Medical Group PCChester, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dean Nick Cassimatis among 1,797 gastroenterology physician records in New York
Dean Nick Cassimatis, M.D. is one of 1,797 gastroenterology physician records with a practice address in New York. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1986 · median 1999 among the 1,378 with a school on file
- Record last updated2012 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 gastroenterology physician records list a practice address in New Windsor
They are 7 of the 608 NPPES records with a practice address in New Windsor, and 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in New Windsor → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Bon Chang Koo, MDNew Windsor, NY 125531396960043
- Seth Levin, M.D.New Windsor, NY 125531528067444
- Arif Muslim, MDNew Windsor, NY 125531053534578
- Murali Perumal, M.D.New Windsor, NY 125531538169461
- Thomas Scileppi, M.D.New Windsor, NY 125531598765430
- Majed Zouhairi, MDNew Windsor, NY 125531437383833
- Jose Churrango, MDNewburgh, NY 125501386879914
- Katherine Kim, MDNewburgh, NY 125501518163039
Common questions
What is Dean Nick Cassimatis, M.D.'s NPI number?
Dean Nick Cassimatis, M.D.'s National Provider Identifier (NPI) is 1821097742, issued on Jul 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Dean Nick Cassimatis, M.D. located?
The NPPES record lists a practice address at 277 Quassaick Ave, New Windsor, NY, 12553. Phone: (845) 565-5630. Providers update this record themselves, so call before visiting.
How can I verify Dean Nick Cassimatis, M.D.'s license?
NPPES lists New York license number 175299, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dean Nick Cassimatis, M.D. prescribe under Medicare Part D?
In 2024, Dean Nick Cassimatis, M.D. had 2,408 Medicare Part D claims for 720 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Dean Nick Cassimatis, M.D.'s MIPS final score?
The 2023 MIPS final score is 81 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.