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

Emergency Medicine

Dennis J. Guy, MD

Works at hospitals in Cleveland, OH · Ohio

Summary

Dennis J. Guy, MD (Emergency Medicine) is listed by Medicare at 1 hospital in Cleveland, OH. NPI 1649384959. 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 Dennis J. Guy, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
23Years since medical school (graduated 2003)
Ohio State University College Of MedicineMedical school
MaleGender (as listed)
Cleveland ClinicGroup practice

Quick answers

Which hospitals does Dennis J. Guy work at?
Medicare's official clinician data lists Dennis J. Guy at 1 hospital: Cleveland Clinic. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Dennis J. Guy see patients?
Medicare's clinician data lists 1 practice location in Cleveland, OH. Call before your visit to confirm the address.
What is Dennis J. Guy's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Dennis J. Guy accept Medicare assignment?
Yes. Medicare's clinician data says Dennis J. Guy 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 Dennis J. Guy?
(216) 444-2200, as listed in official Medicare / NPI Registry data.
What is Dennis J. Guy's NPI number?
1649384959. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Dennis J. Guy works

Medicare's Facility Affiliation Data lists Dennis J. Guy 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 Dennis J. Guy is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Dennis J. Guy as a member of this group (CMS data updated 2026-10-02).

  • Cleveland Clinic7,090 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Ohio →

Other emergency medicine doctors in Cleveland

Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.

All emergency medicine doctors in Cleveland →

Clinician information

CredentialMD
Medical schoolOhio State University College Of Medicine
Graduation year2003
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1649384959
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