Faculty

Core Faculty

Clay Cockerell, M.D., MBA, J.D. – Dermatopathology

Dermatology Residency Program Director

Dr. Clay J. Cockerell is a world-renowned specialist in treating and diagnosing skin disorders and has diagnosed over three million biopsies.

My Biography

Kendi Hensel, D.O., Ph.D. – Osteopathic Neuromusculoskeletal Medicine

Osteopathic Neuromusculoskeletal Medicine Residency Program Director

My Biography

William Abramovits, M.D. – Dermatology

Dr. William Abramovits was born and raised in Caracas, Venezuela. Dr. Abramovits practiced dermatology for 10 years in Caracas and returned to practice initially in South Texas, and since 1989 in Dallas, Texas.

My Biography

Aaron Farberg, M.D. – Dermatologic Surgery

Aaron S. Farberg, M.D. is a double board-certified dermatologist and fellowship-trained Mohs surgeon that specializes in skin cancer, inflammatory diseases, and cosmetic dermatology.

My Biography

Martin Kassir, M.D. – Cosmetic Dermatology

Dr. Martin Kassir is a Board-Certified Dermatologist specializing in aesthetic dermatology and laser procedures, and has practiced dermatology in Dallas for the last sixteen years.

My Biography

Yein Lee, D.O., MMSc – Physical Medicine & Rehabilitation


Richard Porter, D.O.

Richard Porter received his DO from Touro University Nevada College of Osteopathic Medicine. He completed his residency training in Osteopathic Neuro Musculoskeletal Medicine (ONMM) in West Virginia.  Dr. Porter has participated with educating medical residents since completing his training and enjoys being able to help other doctors develop the skill required for this specialty. 

My Biography

Ryan Seals, D.O. – Osteopathic Neuromusculoskeletal Medicine


David Mason, D.O., MBA – Osteopathic Neuromusculoskeletal Medicine

Dr. Mason believes that patient care should be about incorporating principles of sound medical care tailored to each individual with a rationalized approach. Treatment plans that are patient-centric are the foundation to successful patient outcomes. Incorporation of careful history and physical examination, medical management, and appropriate use of interdisciplinary health care teams with proper incorporation of OMT is the opportunity of every Doctor of Osteopathic Medicine (D.O.).

My Biography

Christopher Medina, D.O. – Osteopathic Neuromusculoskeletal Medicine

Dr. Medina is dually board certified in Family Medicine and Neuromusculoskeletal Medicine/Osteopathic Manipulative Medicine. He has a special interest in nutrition, physical fitness, lifestyle medicine, and bridging the gap between the classroom and clinic in Osteopathic education. He strives to share his passions with medical students and residents in all education settings, from physical and virtual classrooms and skills labs to clinical practice.

My Biography

Sajid Surve, D.O. – Osteopathic Neuromusculoskeletal Medicine


Teaching Faculty

  • Kimberly Fulda, Ph.D. – Clinical Research
  • Rita Patterson, Ph.D. – Clinical Research
  • Lisa Nash, D.O., MSEd – Community Medicine
  • Natalie Wright, M.D. – Complex Medical Dermatology
  • Heinz-Dieter Schwarzkopf, D.O. – Emergency Medicine
  • Todd Belott, M.D. – General Surgery
  • Dario Kivelevitch, M.D. – Inpatient Dermatology
  • Peter O’Carroll, M.D. – Neurology
  • Meaghan Nelsen, M.D. – Obstetrics & Gynecology
  • Corey Mark, M.D. – Orthopaedic Medicine
  • James Aston, D.O. – Osteopathic Neuromusculoskeletal Medicine
  • Obioma Ilouga, M.D. – Osteopathic Neuromusculoskeletal Medicine
  • David Mason, D.O., MBA – Osteopathic Neuromusculoskeletal Medicine
  • Christopher Medina – Osteopathic Neuromusculoskeletal Medicine
  • Dante Paredes, D.O. – Osteopathic Neuromusculoskeletal Medicine
  • Malinda Hansen, D.O. – Osteopathic Neuromusculoskeletal & Sports Medicine
  • Scott Thompson, M.D. – Pain Management
  • Heather Volkman, D.O. – Pediatric Dermatology
  • Sajid Surve, D.O. – Physical Medicine & Rehabilitation
  • Steven Fields, M.D. – Radiology
  • Delia Wright, M.D. – Pediatrics
©2025 Lake Granbury Medical Center Family Medicine Residency