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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 (6)

The overall average patient rating of Dr. Mark Wallis is Excellent. Dr. Wallis has been reviewed by 22 patients who have provided 6 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 4.7
Courteous Staff 4.8
Accurate Diagnosis 4.7
Bedside Manner 4.8
Spends Time with Me 4.2
Follows Up After Visit 4.0

Specialties & Research

Dr. Mark Wallis, MD is board certified in Dermatology.

  • He has special expertise in 5 areas:
  • Acne (Acne Vulgaris)
  • Acne Rosacea
  • Melanoma
  • Psoriasis
  • Skin Cancer

Education & Awards

Dr. Wallis graduated from The University of Texas at San Antonio. He has 2 awards.

Patients' Choice Award (2008 - 2009, 2013 - 2014)
Compassionate Doctor Recognition (2014)


Dr. Wallis has 2 hospital affiliations:

  • Longview Regional Medical Center 
  • Good Shepherd Medical Center 


  • Spanish

> > > > Dr. Mark Wallis, MD

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Additional Information
Dr. Mark S Wallis MD is a male Dermatologist, has 23 years of experience and practices in Dermatology.
Where does Dr. Mark S. Wallis practice?
Dr. Mark Wallis has 1 office location.
Dr. Mark Wallis practices Dermatology near Longview, TX.
See Longview Dermatologists.