Browse Health
48 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Have you visited Dr. Horwitz? Share your experience.
Write a Review

Specialties & Research

Dr. Marc Horwitz, MD is board certified in Psychiatry.

  • He has special expertise in 7 areas:
  • Attention Deficit Disorder (ADD) / Attention Deficit Hyperactivity Disorder (ADHD)
  • Bipolar Disorder / Manic Depressive Disorder
  • Depression
  • Depressive Disorder
  • Insomnia
  • Schizophrenia
  • Sleep Disorders

Education & Awards

Dr. Horwitz graduated from The Ohio State University , Columbus.


Dr. Horwitz has 6 hospital affiliations:

  • University Hospitals of Cleveland 
  • Euclid Hospital 

> > > > Dr. Marc Horwitz, MD

Similar doctors nearby

Dr. Richard Schwartz

Cleveland, OH

Dr. Ilze Schwartz

Cleveland, OH

Dr. Anne Warren

33 years experience
Cleveland, OH

Dr. Jonathan Nehrer

27 years experience
Willoughby Hills, OH

Dr. Kathryn Muzina

19 years experience
Willoughby Hills, OH

Dr. David Feldman

31 years experience
Willoughby Hills, OH
Search All Similar Doctors
Additional Information
Dr. Marc Jeffry Horwitz MD is a male Psychiatrist, has 48 years of experience and practices in Psychiatry.
Where does Dr. Marc J. Horwitz practice?
Dr. Marc Horwitz has 2 office locations.
Dr. Marc Horwitz practices Psychiatry near Cleveland, OH.
See Cleveland Psychiatrists.