Mark Koone, MD, FAAD


Board-Certified Dermatologist
Fellow of the American Academy of Dermatology
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Dr. Mark Koone is board-certified by the American Board of Dermatology and has been in private dermatology practice since 1990. Dr. Koone has practiced with U.S. Dermatology Partners in Sherman and Paris, Texas, formerly Texoma Dermatology Clinic, since 1993. Dr. Koone also serves as a dermatologist for the Austin College Student Clinic.

Dr. Mark Koone earned a bachelor’s degree magna cum laude from Houston Baptist University with majors in chemistry and biology. He earned a Doctor of Medicine with high honor at Baylor College of Medicine and served an internal medicine internship with Baylor College of Medicine–St. Luke’s Episcopal Hospital. His dermatology residency was served at Duke University Medical Center.

While in practice in Sherman, he has been selected to “Best Doctors in America” every year from 1995 to 2015, has been named a “Texas Super Doctor” in Texas Monthly each year from 2008 to 2015, won the Patient’s Choice Award in 2008 and 2009, and has been named one of “America’s Top Dermatologists” every year from 2008 to 2015.

He currently is a member of the Texas Dermatological Society, where he has been a trustee. He has served as an advisory board member of the American Academy of Dermatology and as president of the Dallas Dermatologic Society. He and his wife have one adult child who lives in Houston.

Badges and Awards

Dr. Mark Koone U.S. Dermatology Partners Texoma, Texas

Clinic Locations

What Our Patients Say

Mark Koone, MD
5 Stars  Dr.Koone is great! I’ve never had a bad experience in all the years I’ve gone to him! I recommend him to everyone I know! He’s such a kind man, patient, gentle, and very thorough! I couldn’t ask for anyone better! Thank you Dr. Koone... –
Source : Healthgrades – Nov 15, 2020
Mark Koone, MD
5 Stars  Quick and easy. Nice staff as well. –
Source : Healthgrades – Oct 30, 2020
Mark Koone, MD
5 Stars  He is very knowledgeable, thorough, and personable. Awesome dermatologist! Heartily recommend him –
Source : Healthgrades – Sep 30, 2020

Services Offered By Dr. Mark Koone

Insurance Plans Accepted By Dr. Mark Koone

Dr. Mark Koone accepts most major insurance plans. If your plan is not listed above, please contact the office to verify coverage.