Meet the Doctors

At Dr. Maul's Family Practice in Rowlett and Lavon, Texas, our family doctors and team of nurse practitioners and physician assistants are dedicated to your health and well-being. We look forward to getting to know each of our patients, young and old, and providing you with first-class care and service from the moment you walk in the door. For an appointment with one of our providers, call the location of your choice or you can request one online.

R. Greg Maul, DO, FACOFP

R. Greg Maul, DO, FACOFP

Dr. Greg Maul is a family practice physician who is board certified by the National Board of Osteopathic Medical Examiners, as well as board certified and recertified by the American Osteopathic Board of Family Physicians. Dr. Maul earned his doctor of osteopathic medicine degree at Kirksville College of Osteopathic Medicine (A.T. Still University in Kirksville, Missouri). He completed an internship at the Dallas/Fort Worth Medical Center in Grand Prairie, Texas.

Dr. Maul's professional appointments include clinical assistant professor and associate professor at the University of North Texas Health Science Center/Texas College of Osteopathic Medicine, as well as assistant clinical professor at the department of family practice at Texas Tech University Health Science Center in Lubbock, Texas.

A fellow of the American College of Osteopathic Family Physicians (ACOFP), Dr. Maul also serves on the organization’s Board of Governors and was president of ACOFP in 2004-2005. He is past president of the Texas Osteopathic Medical Association and past president of the Texas Society of American College of Osteopathic Family Physicians. Dr. Maul is a member of the Texas Medical Foundation and American Osteopathic Association.

Dr. Lien Lam, DO

Coming soon

Ruth Robert, NP-C

Ruth is a certified family nurse practitioner with more than 18 years of full-time nursing experience. Ruth earned a bachelor of science in nursing at Punjab University in Ludhiana, India and a master of nursing at Delhi University in New Delhi, India. She completed the family nurse practitioner post-masters certification program at Texas Women's University (TWU) in Dallas, Texas.

Ruth is enrolled in the doctorate of nursing program at TWU in Denton, Texas. In addition, Ruth holds an advanced diploma in hospital administration from the Institute of Health Care Administration in Madras, India.

Ruth's honors and awards include:

  • 2008 Nurse Week Nursing Excellence Award for South Central Texas and Louisiana for Teaching
  • 2005 Florence Nightingale Award from Baylor, Garland, Texas
  • 2001 Poster Presentation on Dengue Fever at an international conference on infectious disease, Muscat, Sultanate of Oman, 2001
  • Highest Score with Distinction, University of New Delhi, India
  • President's Gold Medalist for Highest Score, University of Punjab, India

Ruth is a member of the American Academy of Nurse Practitioners, American Academy of Critical Care Nurses, and Academy of Medical Surgical Nurses.

Carl Dear, PA-C

Coming soon

Tanya Lair, PA-C

Coming soon

Sandra DeJesus, FNP-C

 Please check back for updates

Britney Cornett, PA-C


Chasareth Thompson, MPAS, PA-C


Dr. Maul's Family Practice

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