Mark Horowitz, D.O.

About Me

Mark Horowitz, D.O.

Dr. Mark Horowitz practices medicine at Coast Dermatology Medical Associates. After completing his training at Michigan State University over 20 years ago, he has mastered some of the most advanced techniques available in dermatology and cosmetic surgery today. Dr. Horowitz is an expert in general and surgical dermatology. He has advanced skills in skin cancer detection and Mohs micrographic surgery to treat large and difficult tumors of the skin.

Besides his advanced surgical training, he has developed a special interest in chronic rashes that result from allergic reactions. He has developed a patch test center which can detect offending chemicals in your environment that may be producing the rash. Our office is one of the few medical practices offering this advanced service in southern California. 

Dr. Mark Horowitz was the assistant director of the Western University/Pacific Hospital Dermatology residency program, and he was active in teaching resident physicians at UCLA Harbor Hospital. Dr. Mark Horowitz has published multiple articles in prestigious medical journals. He has been asked to be a speaker for many pharmaceutical companies and has conducted clinical trials on new and innovative medications.
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Where I Practice

Coast Dermatology Medical Associates

Coast Dermatology Medical Associates

23550 Hawthorne Boulevard Suite 200
Torrance, CA 90505


Accepted Insurance


My Training & Credentials

Undergraduate & Medical
Undergraduate Degree
California State University, Los Angeles

Medical School
Nova Southeastern College of Osteopathic Medicine, Fort Lauderdale, Florida 1992-1996

Internal Medicine Track Internship, POH Medical Center, Pontiac, Michigan 1996-1997

Residency, Dermatology
Michigan State University, POH Medical Center, Pontiac, Michigan 1997-2000

Post-Medical Training
Adjunct Clinical Assistant Professor, Department of Medical Education, Texas College of Osteopathic Medicine, University of North Texas Health Science Center at Fort Worth

Co-Director of Dermatology Residency Program, Western University/Pacific Hospital of Long Beach

Teaching staff at Pacific Hospital of Long Beach, Dermatology Clinic

Chairperson In-training Examination Committee of the American Osteopathic College of Dermatology

Dean’s List 1993-1994, Nova Southeastern College of Osteopathic Medicine
President’s List, 1993-1994, Nova Southeastern College of Osteopathic Medicine
Chief Resident of Dermatology 1999-2000
Daniel Koprince Education Award, American Osteopathic College of Dermatology, 1999
Oclassen Research Award, American Osteopathic College of Dermatology, 2000

Medical Mission to Ethiopia, 2000

Board of Certification
  • Licensed and Board-Certified Dermatologist

Professional Societies
American Academy of Dermatology
American Osteopathic Association
American Osteopathic College of Dermatology
Osteopathic Physicians and Surgeons of California 


Patient Reviews


Conditions I Specialize In Treating


I Also Practice With