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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

Patient comments (17)

The overall average patient rating of Dr. Arash Horizon, Rheumatologist is Excellent. Dr. Horizon has been reviewed by 37 patients who have provided 17 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.5
Promptness 4.1
Courteous Staff 4.2
Accurate Diagnosis 4.6
Bedside Manner 4.6
Spends Time with Me 4.6
Follows Up After Visit 4.4

Specialties & Research

Dr. Arash Horizon, MD is board certified in Rheumatology.

  • He has special expertise in 11 areas:
  • Ankylosing Spondylitis
  • Chondrocalcinosis
  • Gout
  • Hip Osteoarthritis
  • Knee Osteoarthritis
  • Osteoarthritis (Hand and Wrist)
  • Osteoporosis
  • Psoriatic Arthritis
  • Rheumatic Diseases
  • Rheumatoid Arthritis
  • Systemic Lupus Erythematosus (SLE)

Education & Awards

Dr. Horizon graduated from University of California at San Diego, La Jolla. He has 3 awards.

Patients' Choice Award (2008 - 2010)
Compassionate Doctor Recognition (2009 - 2010, 2013)
Top 10 Doctor - Metro Area (2014)
Los Angeles Metro Area


Dr. Horizon has 1 hospital affiliations:

  • Cedars-Sinai Medical Center 


  • Persian
  • Spanish

> > > > Dr. Arash Horizon, MD

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Additional Information
Dr. Arash Aaron Horizon MD is a male Internist, has 13 years of experience and practices in Internal Medicine and Rheumatology.
Where does Dr. Arash A. Horizon practice?
Dr. Arash Horizon has 1 office location.
Dr. Arash Horizon practices Internal Medicine and Rheumatology near Los Angeles, CA.
See Los Angeles Internists and Los Angeles Rheumatologists.