Tyler
Sixth Street Doctor Circle

(903) 593-9474

(903) 236-3266

(903) 757-3881

Meet Our Physicians

Mark S. Wallis, M.D., F.A.A.D.

After completing his undergraduate work at Texas A&M University, Dr. Mark Wallis earned his medical degree from the University of Texas Health Science Center in San Antonio in 1988. Four years later, he completed his dermatology residency at the University of Arkansas Medical Sciences in Little Rock.

In practice since 1992, Dr. Wallis stays abreast of the latest technological advances in his field with active memberships in the Texas Medical Association, Gregg County Medical Society, American Academy of Dermatology, American Society of Dermatologic Surgery, Texas Dermatological Society, American Society of Micrographic Surgery, American Contact Dermatitis Society and the National Psoriasis Foundation. Dr. Wallis is also vice-president of the dermatology section of the Christian Medical and Dental Association. He is also a Fellow in the American Board of Dermatology. Dr. Wallis is currently serving on the non-profit Board of Directors for Pine Cove Christian Camps. Dr. Wallis has been named by his peers to the Super Doctors® list published by Texas Monthly for the sixth year in a row.

Dr. Wallis and his wife, Traci, have three children: Luke, Logan and Lydia. In his spare time, he enjoys hunting, fishing, computers, reading history and travel. Medical missions are an important part of his practice life as well.

Jason Blaser, M.D.

Dr. Jason Blaser was born and raised in a farming community in Idaho. He served 11 years in the U.S. Army where he received most of his medical training. He then received his dermatology training at the University of Texas Health Science Center - San Antonio. He has been in practice since 1999. Dr. Blaser is board certified in both Dermatology and Dermatopathology. He is a member of the Texas Medical Association, American Academy of Dermatology, American Society for Mohs Surgery, and the American Society of Dermatopathology. He provides care for a variety of patients in the clinic including Mohs micrographic surgery, cosmetic procedures, and interprets all tissue biopsy (lab specimens) for Wallis Dermatology Associates.

Dr. Blaser is married to Diana and they have 3 children. He enjoys biking, hunting, and family time outdoors.

Dr. Blaser joined Wallis Dermatology Associates in November 2014.

Alyn D. Hatter, D.O.

Dr. Alyn D. Hatter was born and raised in the Panhandle of Texas. He attended San Angelo State University and graduated with a Bachelor of Science in 2001. He attended the University of North Texas Health Science Center and graduated in 2008 with a dual degree, Master of Science and Doctor of Osteopathic Medicine. He fulfilled his medical internship at University Hospitals of Cleveland in 2009. Dr. Hatter completed his dermatology residency in 2012 at Case Western Reserve University, Case Medical Center in Cleveland, Ohio. Dr. Hatter has lectured nationally as an expert in Dermatology and continues to publish scientific articles within his specialty.

Dr. Hatter enjoys spending time with his two children, travel, music, cooking and gardening in his free time.

Dr. Hatter joined Wallis Dermatology Associates in August 2012.

 

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