Dr. Shabbir Jamali, MD. PA

Board-certified Gastroenterologists

For more than ten years, Dr. Shabbir Jamali and his family have been a part of the Houston community and have made Northwest Houston home. His dedication to his patients is reflected in the pride he takes in his gastroenterology medical practice at the Gastroenterology Diagnostic Center of Tomball where he has practiced for over two decades.

Dr. Jamali completed his Internal Medicine Residency at Wayne State Medical Center in Detroit Michigan in 1987. During his time in residency, he was awarded the honor of ‘Best Intern of the Year’ for his outstanding performance in his work and studies. He then completed a Gastroenterology Fellowship at the University of Connecticut Health Center at Farmington, Connecticut, and was later board certified in both internal medicine and gastroenterology by the American Board of Internal Medicine (ABIM.)

Over the years, Dr. Jamali has been an active member of many national and regional professional societies and associations including: American College of Gastroenterology (ACG), American Society of Gastrointestinal Endoscopy, (ASGE), Texas Society of Gastrointestinal Endoscopy (TSGE), Texas Gulf Coast Gastrointestinal Society, Texas Medical Association (TMA), and the Harris County Medical Society (HCMS). Involvement at all levels of the medical community allows Dr. Jamali to stay abreast of the latest research and technical developments in the field.

Dr. Shabbir Jamali

Avais Chatha, MD

Board Certified in Gastroenterology

Dr. Avais Chatha is a board-certified gastroenterologist in the Northwest Houston area at Gastroenterology Diagnostic Center, Tomball. His expertise includes all aspects of Gastrointestinal disorders, including Liver disease, Pancreatic and Biliary disorders, Colon Cancer screening, Ulcerative Colitis, Crohn’s Disease, GERD, IBS, GI Motility disorders, Hemorrhoid management, Constipation, Fecal incontinence and GI Tumors. He is dedicated to providing compassionate and comprehensive medical care to his patients, by taking the time to address all their concerns and explaining their disease and treatment plans in order to build a trusting patient-physician relationship.

Dr. Chatha completed a post-doctoral research fellowship in pancreatic cancer at Massachusetts General Hospital / Harvard University, Boston and his internship in General Surgery at New York Hospital Queens / Weill Cornell Medical College. He later received his board certification after his Internal Medicine residency at NYU Winthrop University Hospital, New York. Dr. Chatha then moved south for GI fellowship at the University of Mississippi Medical Center in the Department of Gastroenterology and Hepatology where he also served as Chief Gastroenterology Fellow and received advanced training in Upper Endoscopy, Colonoscopy, ERCP, and Fecal Microbiota Transplant.

Dr. Chatha is a member of the Texas Medical Association (TMA), Harris County Medical Society (HCMS), American Society for Gastrointestinal Endoscopy (ASGE), American College of Gastroenterology (ACG), and the American Gastroenterological Association (AGA).

Dr. Chatha enjoys spending time with his family, playing basketball and the electric guitar with his son, grilling and cheering on the Rockets and Astros.

Avais Chatha

Reynalin Bailey, APRN, DNP

Doctors Jamali and Chatha are supported in their practice by Advanced Practice Registered Nurse, Reynalin Bailey. After receiving her Master of Science in Nursing from Angelo State University, San Angelo, Texas, Ms. Bailey continued her schooling and received an APRN certification also from Angelo State. Her academic focus was as a Medical-Surgical Clinical Nurse Specialist. In addition, she holds a Doctor of Nursing Practice from Texas Christian University, Fort Worth, Texas. In 2016 and 2018 she served as an online nursing faculty member at Angelo State delivering courses in Advanced Health Assessment.

Ms. Bailey also served as a Clinical Trial Sub-Investigator at the Permian Research Foundation from 2005 -2011 and maintains certification as a Gastrointestinal Advanced Practice Nurse (Gastrointestinal APN) from 2005 to the present. Her professional interests include liver diseases and functional bowel diseases. Ms. Bailey is an integral and important part of the Gastroenterology Diagnostic Center team and is available for patient questions and comments.

Reynalin Bailey