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We are pleased to announce we now have offices in McAllen, Brownsville and HarlingenSee Our Locations We are pleased to announce we now have offices in McAllen, Brownsville and HarlingenSee Our Locations

Alan G. Coates, DO, FACOIGastroenterologist

Alan G. Coates, DO, FACOI - Profile Picture

Alan G. Coates, DO, FACOIGastroenterologist

Dr. Alan Coates joined Texas Digestive Specialists (TDS) in February of 2019.

Dr. Coates earned a bachelor’s degree in biology from Western Michigan University and a Doctor of Osteopathic Medicine from the College of Osteopathic Medicine & Surgery in Des Moines, Iowa. He completed his internal Medicine Internship and Residency at Grand Rapids Osteopathic Hospital in Grand Rapids, Michigan and fellowship training in Gastroenterology from the University of Michigan Medical Center in Ann Arbor, Michigan. He is board certified in Internal Medicine and Gastroenterology.

He is the founder and CEO of Gastroenterology Associates of Western Michigan and of West Michigan Clinical Research Center (WMCRC). Through WMCRC, Dr. Coates has participated in several studies for gastroenterology conditions. Dr. Coates is an active member of the American Society for Gastrointestinal Endoscopy (ASGE), the American Osteopathic Association (AOA), Michigan Association of Osteopathic Physicians and Surgeons, as well as a Fellow of the American College of Osteopathic Internal Medicine. Dr. Coates speaks Spanish and English and is available for consultation in our Brownsville and Harlingen offices.

Our PracticeLocations & Directions
Adult Locations
  • 4211 N Jackson Rd
    McAllen, TX 78504

  • 305 Lorenaly Drive
    Brownsville, TX 78526

  • 512 Victoria Lane
    Suite 2
    Harlingen, TX 78550

Pediatric Locations
  • 4211 N Jackson Rd
    McAllen, TX 78504

  • 512 Victoria Lane
    Suite 14
    Harlingen, TX 78550