Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Matthew L. Denno, MD

Works at hospitals in Ellenville, NY · Kingston, NY · Rhinebeck, NY … · New York

Summary

Matthew L. Denno, MD (Family Practice) is listed by Medicare at 4 hospitals in Ellenville, NY, Kingston, NY and Rhinebeck, NY and other places. NPI 1225187743. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Matthew L. Denno, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Family PracticePrimary specialty
YesAccepts Medicare assignment
32Years since medical school (graduated 1994)
Wayne State University School Of MedicineMedical school
MaleGender (as listed)
Optum Medical Care PCGroup practice

Quick answers

Which hospitals does Matthew L. Denno work at?
Medicare's official clinician data lists Matthew L. Denno at 4 hospitals: Ellenville Regional Hospital, Healthalliance Hospital Marys Avenue Campus, Northern Dutchess Hospital and Vassar Brothers Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Matthew L. Denno see patients?
Medicare's clinician data lists 1 practice location in Mount Kisco, NY. Call before your visit to confirm the address.
What is Matthew L. Denno's specialty?
Medicare lists Family Practice as the primary specialty.
Does Matthew L. Denno accept Medicare assignment?
Yes. Medicare's clinician data says Matthew L. Denno accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Matthew L. Denno?
(914) 241-1050, as listed in official Medicare / NPI Registry data.
What is Matthew L. Denno's NPI number?
1225187743. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Matthew L. Denno works

Medicare's Facility Affiliation Data lists Matthew L. Denno at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Matthew L. Denno is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Matthew L. Denno as a member of this group (CMS data updated 2026-10-02).

  • Optum Medical Care PC1,010 clinicians in the group

Specialties

Find other Family Practice doctors in New York →

Other family doctors in Mount Kisco

Clinicians with the same Medicare primary specialty in Mount Kisco, NY — not a recommendation.

All family doctors in Mount Kisco →

Clinician information

CredentialMD
Medical schoolWayne State University School Of Medicine
Graduation year1994
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1225187743
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians