Find a Top Gastroenterologist Near Me in Gaithersburg, MD – Book an Appointment Instantly

Josh Rosenbloom, DO, is a board-certified gastroenterologist and hepatologist at the Gastro Center of Maryland in Columbia, Lutherville, and Annapolis, Maryland. He is committed to providing his patients with the best possible personalized care in a calming and professional environment.

Dr. Rosenbloom received his medical degree from Des Moines University. After graduating, he continued his medical education at the St. John Providence health system through Michigan State University, completing a residency in internal medicine and a fellowship in gastroenterology. He also participated in published research studies on nutrition, weight loss, hepatitis C, and improving colonoscopy preparation.

Dr. Rosenbloom specializes in endoscopy , including colorectal cancer screenings, weight loss assistance, pain and symptom management, and nutrition. Given his interests in these areas , he has taken a special focus on performing both Orbera and Spatz bariatric balloon insertions

Approaching his 5th year at Gastro Center of Maryland, Dr. Rosenbloom is experienced in treating a wide array of gastrointestinal, liver, and pancreatic diseases. He most frequently treats GERD, irritable bowel syndrome (IBS), ulcerative colitis, Crohn’s disease, constipation, liver disease, celiac disease, among others.

Dr. Mamunes, MD, is one of the skilled gastroenterologists practicing at Gastro Center of Maryland, which has locations in Columbia, Annapolis, Olney, Riverdale, and Lutherville, Maryland. 

Dr. Mamunes grew up in Maryland, attending the University of Maryland, College Park and subsequently completing his medical degree at the University of Maryland School of Medicine. There he graduated summa cum laude and was elected to the Alpha Omega Alpha medical honor society. He then completed his residency in Internal Medicine and fellowship in Gastroenterology and Hepatology at Vanderbilt University Medical Center. During this time, he contributed to multiple research papers published in peer-reviewed medical journals, spanning topics from endoscopic practices to inflammatory bowel disease. He is currently a member of the American Gastroenterological Association (AGA) and American College of Gastroenterology (ACG).

Dr. Mamunes treats a wide range of gastrointestinal and liver disorders including inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), constipation, acid reflux, fatty liver disease, colon cancer screening, celiac disease, and eosinophilic esophagitis. He is skilled in endoscopy (EGD), colonoscopy, and video capsule endoscopy.

In his free time, Dr. Mamunes enjoys hiking, music, and spending time with his wife and dog

Dr. Monica Passi, MD is a double board-certified physician specializing in Gastroenterology/Hepatology and Internal Medicine. She is currently accepting new patients.

As an advanced endoscopist, Dr. Passi has particular expertise in pancreatobiliary disorders and the endoscopic diagnosis and treatment of gastrointestinal cancers.  Her clinical interests include early detection and management of a wide range of GI and liver conditions, such as acid reflux, inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), eosinophilic esophagitis, gastritis, and celiac disease, colon cancer screening and GI malignancies. Along with routine endoscopic procedures, Dr. Passi is skilled in performing the complex and technically demanding procedures of advanced endoscopy.

Dr. Passi is committed to delivering care that places the patient at the center of every decision and believes in shared decision making. She takes a holistic view of each person, developing personalized treatment strategies that reflect their individual needs and values. By fostering open dialogue and building trust, she works to establish meaningful relationships with her patients—ones rooted in compassion and mutual respect. Her mission is to provide the education and support patients need to make informed, confident choices about their health.

A native of the D.C. metropolitan area, Dr. Passi earned her medical degree from The George Washington University in Washington, D.C. She completed her residency in Internal Medicine at Northwell Health in Queens, NY. She then pursued a fellowship in Gastroenterology and Hepatology at the University of Maryland and the prestigious National Institutes of Health (NIH) in Bethesda, MD. To further specialize in advanced therapeutic endoscopy and pancreatobiliary disease, she completed a dedicated fellowship in advanced endoscopy at Northwell Health.

In addition to her clinical practice, Dr. Passi is passionate about contributing to the advancement of medical knowledge. She has presented her research at national and international conferences and authored numerous publications in respected, peer-reviewed journals.

Outside of medicine, Dr. Passi enjoys playing tennis, traveling, and spending time with her husband and children.

Dr. Passi provides expert, personalized care for a wide range of gastrointestinal conditions, combining clinical excellence with a compassionate approach. Whether you're managing a chronic condition or seeking answers to new symptoms, Dr. Passi is here to guide you every step on your path to better health.

Patryk Madrid, DNP, FNP-C, is a gastroenterology nurse practitioner at Anne Arundel Gastroenterology Associates, P.A., serving patients in Annapolis and surrounding areas.

Dr. Madrid completed his undergraduate studies at Arizona State University in Kinesiology and Health Sciences, and at Warner Pacific University in Nursing. He received his nurse practitioner doctoral degree from the Johns Hopkins University in Baltimore, Maryland.

Dr. Madrid has worked in several healthcare roles for over 15 years including endoscopy, oncology, education, emergency medicine, integrative medicine, and military healthcare administration. Dr. Madrid is a member of the Gastroenterology and Hepatology Advanced Practice Providers (GHAPP) and the American Association of Nurse Practitioner (AANP). Most recently, Dr. Madrid held a faculty position with the Johns Hopkins School of Nursing teaching gastroenterology, health assessment, pathophysiology, and other nursing education.

Dr. Madrid strives to deliver high-quality healthcare that is empathetic, comprehensive, and equitable. His clinical approach is integrative with an understanding that treatment plans are uniquely tailored to each patient. Outside of work, Dr. Madrid enjoys reading comics, indoor cycling, being outside, and spending time with his husband, dogs, and cats.

Dr. Kent Aje is a board-certified internist and gastroenterologist with advanced fellowship training in clinical nutrition. A Maryland native from Prince George’s and Montgomery Counties, he earned his B.S. in Forensic Science with a minor in Chemistry from Virginia Commonwealth University, graduating with honors. He received his medical degree from The George Washington University School of Medicine and Health Sciences.

Dr. Aje completed his Internal Medicine Residency at Loyola University Medical Center, followed by a Clinical Nutrition Fellowship at The Cleveland Clinic Foundation and a Gastroenterology Fellowship at Rush University Medical Center.

He has served as a Hospitalist at Edward Hines Jr. VA Hospital and has made significant contributions to both research and medical education. Dr. Aje has presented at national and international gastroenterology conferences and has co-authored various publications, including case reports and textbook chapters. He is an active member of several professional societies, including the ACG, AGA, ASGE, and the Association of Black Gastroenterologists and Hepatologists.

Dr. Aje is deeply committed to patient-centered care, academic excellence, and addressing health disparities. His clinical interests include colorectal cancer screening and prevention, inflammatory bowel disease, chronic liver conditions, intestinal failure, and the intersection of nutrition and gastrointestinal health.
Outside of work, Dr. Aje enjoys spending quality time with his growing family, weightlifting, playing guitar, reading science fiction, and cooking.

Board certified in gastroenterology, David S. Jencks, MD, is proud to provide personalized care to patients at Anne Arundel Gastroenterology Associates, P.A. in Annapolis and Pasadena, Maryland. He has a particular interest in the prevention of esophageal and colon cancers and the management of inflammatory bowel disease.

Dr. Jencks completed medical school at The George Washington University in Washington, DC, where he was elected into the Alpha Omega Alpha Honor Medical Society. He then completed his internship and residency at Stanford University Hospital in Palo Alto, California. Dr. Jencks then returned to The George Washington University to complete his fellowship training.

At Anne Arundel Gastroenterology Associates, Dr. Jencks is passionate about helping patients achieve optimal health. He strives to educate patients about their conditions and ensure their questions are answered.

Dr. Jencks is currently accepting new patients and looks forward to partnering with them on their health care journey. Schedule an appointment with Dr. Jencks by calling the office or booking a consultation online today.

Praveena G. Velamati, MD, is a board-certified gastroenterologist at Anne Arundel Gastroenterology Associates, P.A., serving patients in Annapolis and Odenton, Maryland.

Dr. Velamati completed an accelerated bachelor's and medical degree program at Eastern Virginia Medical School, followed by her internal medicine residency at Carolinas Medical Center in Charlotte, North Carolina. 

She then pursued her gastroenterology fellowship at Johns Hopkins Bayview Medical Center in Baltimore, Maryland, where she served as chief fellow during her final year and received the Service Excellence Award for outstanding patient care and compassion. While at Johns Hopkins, Dr. Velamati also published scientific papers in the fields of digestive diseases and hepatology. 

Dr. Velamati specializes in general gastroenterology with a focus on women’s health issues. Board certified in gastroenterology, she was voted Top Docs from 2015-2016 for gastroenterology by What’s Up? Magazine – Annapolis by area physicians.

Dr. Velamati has lived in the area for over 10 years with her husband and two children. She enjoys traveling, gardening, and football.

Raja Taunk, MD, is board certified in internal medicine and gastroenterology. He provides a wide range of gastroenterology care at Anne Arundel Gastroenterology Associates, P.A. in Annapolis and Bowie, Maryland. 

Raised in New Jersey, Dr. Taunk graduated magna cum laude from Tufts University in Medford, Massachusetts, where he competed on the crew team. He then earned his medical degree at Rutgers New Jersey Medical School, where he was elected into the Alpha Omega Alpha Honor Medical Society. 

Dr. Taunk completed his internal medicine residency at New York-Presbyterian/Weill Cornell Medical Center, followed by fellowship training in gastroenterology at Lenox Hill Hospital in Manhattan. He has authored scientific papers and book chapters, conducted research, and lectured in the field of gastroenterology and hepatology. He was also featured and invited to speak on the Dr. Oz television show. 

Dr. Taunk holds a national leadership position on the ethics committee of the American Gastroenterological Association. His areas of interest include inflammatory bowel disease, colon cancer screening, acid reflux, and complex polypectomy.

Dr. Taunk is an avid traveler and has run with the bulls in Spain. He is a certified scuba diver, a novice golfer, and an avid sports fan.

Suresh Kumar Misra, MD, is the newest member of Anne Arundel Gastroenterology Associates, P.A., seeing patients from the offices in Bowie and Greenbelt, Maryland. He identifies with the pronouns he/his and is board certified in Internal Medicine and Gastroenterology. 

Inspired by his grandfather’s dedication to medicine in India, Dr. Misra is passionate about listening to his patients with the goal of improving their health and quality of life. He strives to be a knowledgeable and accessible expert resource, both to his patients and to the community he serves. 

After completing his undergraduate degree at Tulane University, Dr. Misra received a Doctorate of Medicine at Drexel University College of Medicine. He continued his training at Temple University Hospital to provide much-needed quality care to the economically distressed area of North Philadelphia. 

After obtaining his Internal Medicine Board Certification, Dr. Misra practiced as an internist for six years. The highlight of his post-graduate career was serving the diverse community of Astoria, Queens, as an ICU hospitalist and completing a one-year Hepatitis Fellowship at the Institute of Liver Medicine in the Mount Sinai Health System. The fellowship focused on hepatitis and general hepatology. Dr. Misra’s practice in New York inspired him to pursue a Gastroenterology Fellowship, which he completed at the University of Arizona in Tucson. 

His research has included the pulmonary complications of cirrhosis and the predictors of liver cancer. He has published multiple reviews on Hepatitis C and presented the results at national conferences. 

Dr. Misra values diversity, equality, integrity, and caring for others. He is currently taking new patients and is excited to serve the community of Annapolis and the Maryland area.

Thomas L. Simcox, MD, is proud to provide comprehensive gastroenterology care at Anne Arundel Gastroenterology Associates, P.A. in Annapolis and Kent Island, Maryland. Board-certified in internal medicine and gastroenterology, Dr. Simcox's areas of interest include acid reflux, gastrointestinal malignancies, and liver disorders.

Born and raised in northern California, Dr. Simcox graduated from the University of California, Davis in 2002 and subsequently spent 18 months in a genetics research lab. He moved to Virginia to attend Virginia Commonwealth University School of Medicine, where he received his medical degree. 

Dr. Simcox completed his internal medicine internship and residency at the University of Maryland Medical Center in Baltimore. He then completed his gastroenterology and hepatology fellowship training with the University of Maryland and the National Institutes of Health Scholars program. Dr. Simcox has presented his research in gastrointestinal disorders at the nation's largest gastroenterology conferences. 

He lives in Annapolis with his wife, who is a pediatrician at Annapolis Pediatrics. He enjoys travel, snow and water sports, and running.

Mark Flasar, MD, MS, is a board-certified gastroenterologist at Anne Arundel Gastroenterology Associates, P.A. in Annapolis and Pasadena, Maryland. Dr. Flasar advocates using patient education to inform shared decision-making and has a special interest in inflammatory bowel diseases, small intestine disorders, and general gastroenterology. 

A local Marylander, Dr. Flasar graduated from the University of Maryland, College Park in 1996. A committed Terrapin, he earned his medical degree from the University of Maryland School of Medicine in Baltimore, where he was elected into the Alpha Omega Alpha Honor Medical Society. 

Dr. Flasar completed his internal medicine residency at Duke University before returning to the University of Maryland in 2004 for his gastroenterology and hepatology fellowship. While there, he obtained a master’s degree in clinical research and completed an externship in inflammatory bowel diseases at the University of North Carolina at Chapel Hill. 

At the University of Maryland School of Medicine, Dr. Flasar has been a faculty member in addition to serving as the associate director of the inflammatory bowel disease program and a fellowship training director in the Division of Gastroenterology and Hepatology. He has held national leadership positions within the American Gastroenterology Association and the Crohn’s & Colitis Foundation of America. He also serves as a review and section editor for several scientific journals. 

Dr. Flasar found his calling in medicine and narrowly escaped attending art school. In his free time, he is passionate about local sports.

Board certified in internal medicine and gastroenterology, Christopher A. Olenec, MD, serves patients at Anne Arundel Gastroenterology Associates, P.A. in Annapolis, Maryland. Dr. Olenec's areas of interest include gastrointestinal malignancies and advanced endoscopic procedures including endoscopic ultrasound, ERCP, and endoscopic treatment of Barrett’s esophagus.

Dr. Olenec graduated from Northwestern University and the Notre Dame Law School. After law school, he worked in Washington, DC, in health care policy prior to attending medical school at Rush Medical College in Chicago, Illinois. 

After medical school, Dr. Olenec completed his internship and internal medicine residency at Dartmouth-Hitchcock Medical Center in Lebanon, New Hampshire. He returned to Rush University Medical Center for his gastroenterology fellowship, where he received specialized training in interventional procedures, including endoscopic ultrasound. 

Dr. Olenec worked as an instructor at the University of Wisconsin and in private practice at Sarasota Memorial Hospital prior to joining Anne Arundel Gastroenterology Associates. Dr. Olenec played water polo in college, has competed in marathons, and has completed an Ironman triathlon.

Melanie L. Jackson, MD, FACG, is a gastroenterologist at Anne Arundel Gastroenterology Associates, P.A., serving patients in Annapolis and Bowie, Maryland.

Dr. Jackson is a native of Philadelphia and graduated cum laude from Morgan State University in Baltimore, Maryland. She received her medical degree from Howard University College of Medicine in Washington, DC, and was elected to the Alpha Omega Alpha Honor Medical Society. 

Dr. Jackson served her residency in internal medicine at New York-Presbyterian Hospital in New York and completed her gastroenterology fellowship at MedStar Washington Hospital Center in Washington, DC. Her additional postgraduate training included a hepatology research program at the National Institutes of Health in Maryland. 

She is affiliated with the American Gastroenterology Association, American Society of Gastrointestinal Endoscopy, and National Medical Association. Dr. Jackson is board certified in gastroenterology and a fellow of the American College of Gastroenterology (FACG). She has published several papers regarding digestive care and has appeared on local television and radio as a digestive health expert. 

Dr. Jackson has special interests in colon cancer awareness, nutrition, and liver disease. She is a member of the Delta Sigma Theta Sorority, Inc.

Raza Hasan, MD, is a highly skilled gastroenterologist at Anne Arundel Gastroenterology Associates, P.A. He is proud to provide compassionate, dedicated care to patients living in and around the Pasadena, Maryland, area. Dr. Hasan's particular areas of interest include gastrointestinal motility disorders, esophageal disease, and colon cancer prevention. 

Originally from Baltimore, Maryland, Dr. Hasan attended an accelerated six-year combined bachelor and medical degree program at the University of Missouri-Kansas City. He was elected into the Alpha Omega Alpha Honor Medical Society and subsequently graduated magna cum laude.

Dr. Hasan completed his internship and residency at Thomas Jefferson Medical Center in Philadelphia, Pennsylvania, and his fellowship at Loyola University Medical Center in Chicago, Illinois. 

In his free time, Dr. Hasan loves to travel abroad and has a checklist of trying to swim in every large body of water in the world.

Dr. Hasan is currently accepting new patients and welcomes new patients to Anne Arundel Gastroenterology Associates, P.A. Schedule an appointment by calling or booking a consultation online today.

Lornette Mills, MD, is a respected gastroenterologist serving patients at GI Associates of Maryland in Waldorf, Maryland. She specializes in internal medicine and gastroenterology and enjoys working closely with her patients to ensure optimal health. 

In 1993, Dr. Mills received her medical degree from the Jacobs School Of Medicine And Biomedical Sciences in Buffalo, New York. In 1996, she completed her internal medicine residency program at George Washington University Hospital in Washington, DC. She then finished her gastroenterology fellowship program at SUNY Health Science Center in Brooklyn in 1999. 

Before joining her current practice, Dr. Mills practiced for two years in Prince Frederick, Maryland. This experience makes her an excellent addition to the GI Associates of Maryland team. 

At the practice, Dr. Mills provides compassionate and effective care. She takes the time to listen to her patients and doesn't rush through her appointments. You're in good hands with Dr. Mills. 

Khadijat Balogun, MD, is a gastroenterologist at GI Associates of Maryland. She offers compassionate and effective care to patients at the Waldorf, Maryland, office. 

Dr. Balogun obtained her medical degree from SUNY Downstate Medical Center in Brooklyn, New York. She completed her internal medicine residency at SUNY Downstate Medical Center and a three-year fellowship program at Albany Medical Center in New York. 

Dr. Balogun is board-certified in internal medicine as well as gastroenterology. She is a professional member of the American Gastroenterological Association, the American College of Gastroenterology, and the American Society for Gastrointestinal Endoscopy.

Dr. Balogun cares for patients with a wide range of issues, including colon cancer screening, gastroesophageal reflux disease, Barrett’s esophagus, liver disease, women’s health, irritable bowel syndrome, and inflammatory bowel disease (Crohn’s disease and ulcerative colitis).

Dr. Balogun aims to provide the highest medical care to all her patients in a safe and friendly environment.

Gowri Kularatna, MD, specializes in gastroenterology at GI Associates of Maryland in Waldorf, Maryland. She has years of experience in the medical field and uses her knowledge to diagnose and treat patients. 

Dr. Kularatna attended Emory University in Atlanta, Georgia, obtaining her bachelor’s degree in biology. She then received her medical degree from the University of Maryland School of Medicine in Baltimore.  

Dr. Kularatna completed her internal medicine residency at Boston Medical Center in Massachusetts and a gastroenterology fellowship at The Barnes-Jewish Hospital through Washington University in St. Louis, Missouri. 

Dr. Kularatna is board-certified in internal medicine and gastroenterology. She is also a professional member of the American College of Gastroenterology and the American Gastroenterology Association.

At GI Associates of Maryland in Waldorf, Dr. Kularatna works closely with patients to ensure she provides expert care. She has a comfortable office setting and takes an evidence-based approach to treat her patients. 

Eduardo Castillo, MD, is a board-certified physician, with specialties in both gastroenterology and hepatology. Dr. Castillo is committed to treating his patients with an exemplary level of care in a family atmosphere and is proud to offer his skills at the Gastro Center of Maryland located in Columbia and Olney, Maryland.

Originally from Lima, Peru, Dr. Castillo received his medical degree from Lima’s prestigious Universidad Peruana Cayetano Heredia. He then traveled to Detroit, Michigan, for an internship, residency, and fellowship at the Henry Ford Hospital, where he served as chief medical resident of internal medicine and chief fellow for gastroenterology.

Dr. Castillo has conducted a wide range of research on digestive issues, as well as liver cancer, cirrhosis, microscopic colitis, and peptic ulcer disease. In addition to being widely published, Dr. Castillo has presented his findings at national medical conferences. He’s also a member of the American Medical Association, the American Gastroenterological Association, and the American College of Gastroenterology, and is board-certified in internal medicine, gastroenterology, and hepatology.

Dr. Castillo has a special interest in treating and preventing colon cancer, as well as treating hepatitis C, GERD, inflammatory bowel disease, and clostridium difficile infection.