Special Offers
South Bay's BEST 2009 - Daily Breeze
Voted Best Dermatologist in the
South Bay by the Daily Breeze
Our Staff
The Coast Dermatology Doctors are trained in the newest and most advanced medical and surgical techniques and are at the cutting edge of cosmetic dermatology, laser, vein and cosmetic surgery.
Board Certified Dermatologist
Dr. David Horowitz
Dr. Horowitz attended and graduated from Eastern Michigan University in Lansing, Michigan. He received a Bachelor of Science Degree in Biology. He attended medical school in Des Moines, Iowa and graduated with a D.O. degree in 1968. He performed his internship at Botsford-Zeiger Hospital in Detroit, Michigan. He then did a 3-year residency in Dermatology at Wayne State University in Detroit, Michigan, and a 1-year fellowship in Pediatric Dermatology at Children's Hospital in Detroit, Michigan. After completing his residency in Dermatology, Dr. Horowitz moved to Fort Lauderdale, Florida where he entered private practice, and continued to practice in Florida for 16 years. Dr. Horowitz moved to Torrance, California in 1990, and has been in private practice since that time.

Dr. Horowitz has actively participated in training programs for Dermatologists in Florida, as well as in California. He is certified by the American Acadamy of Dermatology, and was voted Outstanding Resident of the Year in 1973 at Wayne State University. He was also honored with the Degree of Fellow of the American Osteopathic College of Dermatology in 1975. For the last several years, Dr. Horowitz has been a Board Examiner for the American Osteopathic College of Dermatology, and has served on many of its committees. Throughout his career, he has played an active role in educational projects on the national level.

However, the opinion that matters most to you is yours, which is why a one-on-one consultation between you and Dr. Horowitz is scheduled prior to any commitments. Concerned about you as an individual, Dr. Horowitz takes great pride in matching your expectations with what can realistically be accomplished. His surgical and medical goals are always to maintain a natural appearance while achieving the best possible results. Your questions and concerns are welcomed, because your satisfaction is Dr. Horowitz's main concern. Every effort will be made to assist you in arriving at the best decision, one you will be happy with, not only now, but years from now.
Board Certified Dermatologist
Dr. Mark Horowitz
Dr. Mark Horowitz practices medicine at Coast Dermatology Medical Associates. After completing his training at Michigan State University over 10 years ago, he has mastered some of the most advanced techniques available in dermatology and cosmetic surgery today. Dr. Mark 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.  He also specializes in cosmetic laser treatments to improve the signs of aging and wrinkling 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 is an active professor of Dermatology.  He is 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.
Dr. Michael Kassardjian
Dr. Michael Kassardjian is a native of the South Bay, and prior to joining Coast Dermatology he was involved in various medical research projects and dermatologic publications. While earning his Bachelor's degree at Claremont McKenna College, Dr. Kassardjian gained international research experience at Pasteur Institute in Paris, France. Dr. Kassardjian was also part of an extensive study at Harbor UCLA focusing on infectious dermatologic diseases in HIV patients. Additionally, while in medical school at Touro University, Dr. Kassardjian's strong interest in dermatology as well as dermatologic surgery evolved, and he participated in research in Mohs micrographic surgery and the use of confocal microscopy at Loma Linda University.

Dr. Kassardjian graduated among the top of his medical school class, earning Dean's List and numerous academic merits, and completed his internship training at Pacific Hospital in Long Beach, California. He is a published author in various dermatologic journals. Dr. Kassardjian joins the practice in 2011 and looks forward to practicing medical, surgical and cosmetic dermatology.
Resident in Dermatology
Dr. Matt Koehler
Dr. Koehler is new to the newest provider to join the Coast staff. He is originally from Minnesota and graduated from the University of Minnesota with a Bachelor of Science. He attended medical school at Touro University, College of Osteopathic Medicine in Vallejo, California where he graduated with honors at the top of his class. After medical school, he proudly served as a medical officer in the United States Navy taking care of our active duty personnel and their families. He is happy to join Coast Dermatology and is enjoying the south bay with his wife and son. His particular interests include acne, rosacea, skin cancer and surgical procedures.
Cosmetic Laser Specialist
Marty Knott, M.S.N., R.N.
Marty is a graduate of the University of Iowa and UCLA. She was self-employed as a nurse practitioner in "Physical and Vocational Rehabilitation" for 10 years. During that time, she developed an interest in the cosmetic specialty of medicine.

Many of her patients required reconstructive surgery following catastrophic injuries. She understood the importance of having an acceptable physical appearance, and became knowledgeable in the fields of prosthesis as well as Botox, Collagen, and laser hair procedures. Her education then evolved into a hands-on approach using lasers. She has continued to grow in her knowledge of lasers while employed at Coast Dermatology.
Medical Aesthetician
Leah Roscoe
Leah is a licensed esthetician who specializes in skin care. Leah is trained to recognize and treat skin conditions including fine lines, dehydration, acne, uneven skin tone, and more. Leah uses specialized products and techniques to maintain and improve the patients' appearance. She continues to pursue her education in order to stay current with the most up to date products and procedures.