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Robert S. Flynn, MD, is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Flynn sees patients at the Westchester office in Midlothian, Virginia.

Dr. Flynn earned his medical degree from Upstate Medical University in Syracuse, New York. He then moved to Richmond and completed his internship and residency in internal medicine, and fellowship in gastroenterology at the Medical College of Virginia at Virginia Commonwealth University (VCU). While at VCU, he was active in research and received the American Gastroenterology Resident Research Award in 2006.

Dr. Flynn treats all gastrointestinal and liver diseases and has a special interest in inflammatory bowel disease and colon cancer screening and prevention. 

Dr. Flynn is highly proficient in performing endoscopic procedures, including upper endoscopy, colonoscopy and polyp removal. Additionally, he performs radiofrequency ablation of Barrett’s esophagus.

Patients appreciate his bedside manner and thorough approach. The readers of OurHealth magazine have recognized him as a “Best Bedside Manner” winner for 2015, 2016, 2017, and 2018.

“Growing up, my parents taught me the importance and value of hard work. I believe these core values allow me to connect easily with my patients. I believe in a team-based approach with the patient and working together to defeat the problem.”

“Every patient has a story to tell, and it is my job to listen. You will never feel rushed. I make every effort to personally call patients with test, pathology, and lab results.”

He is the first author of several publications related to Crohn’s disease and co-author of a book chapter in the Handbook of Inflammatory Bowel Disease. 

He has given numerous presentations at both the regional and national levels. Dr. Flynn remains active in the community as a speaker on topics that have included gastroesophageal reflux disease (GERD), screening colonoscopy, and inflammatory bowel disease.

He is a member of the American Gastroenterological Association (AGA), the American College of Gastroenterology (ACG), the Richmond Academy of Medicine (RAM) and the Medical Society of Virginia (MSV). He serves on the Board of the Richmond Chapter of the Crohn’s and Colitis Foundation.

Dr. Flynn is married and has two daughters. He enjoys spending time with his family, swimming, music, and rooting for the Seattle Seahawks and Mariners.

Parth Maheshwari, MD, is a board-certified gastroenterologist at Richmond Gastroenterology Associates in Richmond, Virginia. Joining RGA in August 2024, Dr. Maheshwari sees patients at the Midlothian office in N. Chesterfield, Virginia. 

Dr. Maheshwari earned his Bachelor of Science in Biology from Virginia Commonwealth University (VCU) in Richmond, Virginia in 2014, and went on to complete his Doctor of Medicine degree at the Virginia Commonwealth University School of Medicine in 2018.

Following medical school, Dr. Maheshwari completed his Internal Medicine Residency at Penn State Milton S. Hershey Medical Center in Hershey, Pennsylvania, in 2021. He then pursued specialized training through a competitive Fellowship in Gastroenterology and Hepatology at the University of Mississippi Medical Center in Jackson, Mississippi. He is board-certified by the American Board of Internal Medicine (ABIM) and is an active member of several professional medical organizations.

Dr. Maheshwari has authored several peer-reviewed publications in esteemed journals, including the Annals of Gastroenterology and the International Journal of Colorectal Disease. His work often explores the intersection of clinical practice and research, aiming to improve patient outcomes in gastroenterology.

Dr. Maheshwari speaks Hindi and Urdu fluently, allowing him to connect with a diverse patient population. Outside of medicine, he enjoys dancing, reading, watching movies, and trivia. His diverse interests reflect his well-rounded approach to both his personal and professional endeavors, making him a dedicated and multifaceted physician.

Christopher Lyons, MD, is a board-certified Gastroenterologist at Richmond Gastroenterology Associates. Dr. Lyons sees patients at the Midlothian Center office in Chesterfield, Virginia. He is currently on sabbatical and plans to return to practice later in 2026. 

Dr. Christopher Lyons is a Virginia native who joined Richmond Gastroenterology Associates upon completion of his medical training, in 2005.

Dr. Lyons attended Virginia Commonwealth University (VCU) for undergraduate school and earned his medical degree from the Medical College of Virginia (MCV) at VCU. He completed his internship and residency in internal medicine, and was then selected for a competitive fellowship in gastroenterology and liver disease, at the Medical College of Virginia (MCV). This training allowed him three years of experience in diagnostic and therapeutic endoscopy, colonoscopy screening, and caring for patients with digestive and liver diseases.

His residency colleagues selected Dr. Lyons to serve as Chief Resident during his specialty training. This honor was repeated a few years later, during fellowship, when the faculty selected him to serve as Chief GI Fellow.

Dr. Lyons is particularly interested in colon cancer prevention because of his family’s personal experience with the disease. He has completed thousands of colonoscopy procedures for patients to remove polyps and screen for colon cancer.

He treats many digestive diseases, including irritable bowel syndrome, acid reflux, inflammatory bowel disease (IBD), bile duct disease, liver disease, and cirrhosis. He utilizes lifestyle changes, medications, and endoscopy to improve digestive health.

“My grandfather was fortunate in his day in that his colon cancer was discovered and removed early. Because of his history, my mother was wise to have herself screened early with colonoscopy and had several polyps removed so that she never developed colon cancer.” 

“I work very hard to help my patients understand the importance of screening for colon cancer and removing polyps to prevent them from getting colon cancer.”

Dr. Lyons performs endoscopic procedures, including colonoscopy, upper endoscopy (EGD), and endoscopic retrograde cholangiopancreatography (ERCP). On average, he performs more than 50 endoscopic procedures weekly and has completed more than 30,000 endoscopic procedures in his career.

He enjoys learning the evolving roles that endoscopy can provide in patients' care. He recently discovered and began offering intraductal endoscopy during ERCP for laser lithotripsy of large bile duct stones. He is a member of the Richmond Academy of Medicine (RAM) and the American College of Gastroenterology (ACG).

Dr. Lyons recognizes the importance of strong communication and patient education. He has been selected to lecture his colleagues at grand rounds and speak to nursing organizations about digestive disease and management. He frequently presents an educational program called “GI Jeopardy” to engage his audience and help teach about gastroenterology.

Native to Roanoke, Virginia, Dr. Lyons moved to Richmond to attend college at Virginia Commonwealth University, where he met his wife. They now have five children. Dr. Lyons was a competitive swimmer in his youth. He serves as a referee at his children’s recreational league swim meets in the summer.