Our Providers

John Witte, MD

Dr. Witte graduated with a degree in Biology from Carroll college in Helena Montana. He received his medical degree from St. Louis University School of Medicine and completed an internal medicine residency and gastroenterology fellowship at the University of Wisconsin. He has been practicing gastroenterology in Boise since 1989. Dr. Witte enjoys traveling with his family, tennis, hiking, cycling, and gardening in his spare time.

Paul Baehr, MD

Dr. Baehr received his medical degree from the University of Illinois and completed an internal medicine residency at the University of Michigan. He went to the University of Washington for his gastroenterology fellowship which he completed in 1994. Dr. Baehr came to Boise in 1994 as staff gastroenterologist at the Boise Veterans Hospital. He joined IGA in 1999. He and his wife Margie have two children. His hobbies include sailing and skiing.

Phil Jensen, MD

Dr. Jensen received his medical degree from Texas Tech University in 1988. He completed his residency in Internal Medicine and Gastroenterology fellowship at the University of California, Davis. He was in private practice in Walla Walla, Washington from 1995 until 2003, when he joined Idaho Gastroenterology. He has 3 children and enjoys classical music, hiking, and ice hockey.

Christopher Hammerle, MD

Dr. Hammerle is a native of California and received his Bachelor’s Degree in Biology from the University of California, Irvine. He then completed medical school at Saint Louis University and did his internal medicine internship and residency at the University of Colorado. After residency, he remained on faculty as Associate Professor of Medicine before moving to Charlottesville to complete a Gastroenterology and Hepatology fellowship at the University of Virginia. Dr. Hammerle received advanced training in Interventional Endoscopy and Endoscopic Ultrasound at Cedars-Sinai Medical Center in Los Angeles, where he was also involved in clinical research. He and his family arrived in Boise in the summer of 2012, when he joined IGA. In his spare time, he enjoys cooking for his family and friends, flying airplanes, and fly fishing.

Bonnie Kim Waite, MD

Dr. Waite received her medical degree from the University of Washington and completed an internal medicine residency at Internal Medicine, Spokane in 2000. She joined Idaho Gastroenterology Associates in the fall of 2003, after finishing a gastroenterology and hepatology fellowship at the University of Wisconsin. Dr. Waite enjoys skiing, reading, and hiking with her husband, son and her dogs.

Dave Wood, MD

Dr. Wood received his medical degree from the University of Cincinnati College of Medicine and completed an internal medicine residency at the University of Wisconsin. He went to the University of Wisconsin and completed his gastroenterology fellowship in 1999. He joined IGA in 1999. Dr. Wood is an avid skier, and enjoys cycling, hiking, and spending time with his wife and daughter.

Matt Sericati, MD

Dr Sericati received his medical degree from Medical College of Wisconsin and completed an internal medicine residency at the University of Colorado-Denver. He joined Idaho Gastroenterology Associates in the fall of 2009 after completing his gastroenterology fellowship at the University of Colorado-Denver. He and his wife Stacy have two boys. His hobbies include skiing, biking, golfing, softball and flying.

Brian Story, MD

Dr. Story is a native of Montana where he received his undergraduate degree from Montana State University in Bozeman. He then completed medical school at the University of Washington and a medical internship at the Boise VA hospital. He continued his internal medicine residency training at Virginia Mason Medical Center in Seattle, WA and completed his gastroenterology fellowship at the University of New Mexico in Albuquerque. He joined Idaho Gastroenterology Associates in the summer of 2013 and is excited to provide quality gastroenterology care to the people of the Treasure Valley. He enjoys cycling, hiking, golf, and spending time with his family.

Akshay Gupta, MD

Dr Gupta completed his medical school from the All India Institute of Medical Sciences (AIIMS) New Delhi, India. He did his internal medicine residency at the University of Pittsburgh, Pittsburgh, PA. He then went on to complete a Gastroenterology and Hepatology Fellowship at the University of Michigan, Ann Arbor, MI. He received additional training in interventional endoscopy, ERCP and endoscopic ultrasound at the Moffitt Cancer Center in Tampa, FL. He was in private practice for a year in Wichita, KS, before moving to Boise in 2013 and joined IGA. In his spare time, he enjoys skiing, running, and traveling. He is married to Dr. Neetu Talreja, an Allergy Immunology physician practicing the the valley.

Mark Dell’Aglio, MD

Dr. Dell’Aglio began working with IGA in January 2017. He arrives from Tacoma, WA, where he practiced for the past eight years. Prior to that he had worked for 16 years in Billings, Montana.  He attended Hahnemann University Medical College in Philadelphia, PA and upon graduation in 1985, completed an Internal Medicine Residency at Robert Packer Hospital/Guthrie Clinic in Pennsylvania. Before returning there to complete a fellowship in Gastroenterology/Hepatology in 1992, he spent two years practicing medicine in Fairbanks, Alaska, and Utah. He enjoys the mountains and plans on exploring them further with his wife Trinjia and their dogs.

Gina Theisen, NP-C

Mrs. Theisen joined IGA in 2011.  She received her Bachelor of Science in Nursing from Idaho State University, as well as her Master of Science in Nursing. She also holds a certification with the American Academy of Nurse Practitioners in Family Practice. Prior to working in gastroenterology, she worked in pancreatic disease and surgery. Before becoming a nurse practitioner she worked as a surgical nurse. In her spare time she enjoys cooking, gardening, yoga, the gym, and spending time with her two dogs.

Cory Shuler, NP-C

Cory Shuler joined Idaho Gastroenterology in July 2013. His educational background includes Bachelor of Arts Psychology, University of Kentucky; Bachelor of Science Nursing, Idaho State University;  Master of Science Nursing, Family Nurse Practitioner, Idaho State University. National certification includes accreditation with American Academy of Nurse Practitioners. Nursing experience was in critical care prior to joining Idaho Gastroenterology. He enjoys spending time in the outdoors with family and friends.

Jennifer Leonard, NP-C

Jennifer received her Bachelor of Science in Nursing from Northwest Nazarene University. She was working in critical care for 5 years before she earned her Master of Science in Nursing from Gonzaga University. Prior to joining Idaho Gastroenterology Associates in 2015 she was working at University of Washington Digestive Disease Center. She is certified with the American Academy of Nurse Practitioners in Family Practice. In her spare time she enjoys biking, camping and fishing with her husband.

Melissa Rasmussen, NP-C

Melissa received her Bachelor of Science in Nursing from University of Wyoming. Previously she worked as a nurse in ambulatory surgery for 12 years before she earned Master of Science in Nursing from the University of Cincinnati. She also holds a certification with the American Academy of Nurse Practitioners in Family Practice. In her spare time she enjoys cooking, volleyball, basketball, the gym, traveling and spending time with her husband and three children.

Matthew Hella, NP-C

Matt began his medical career in Boston, MA and has been here in Boise since 2003. He holds a certification with the American Academy of Nurse Practitioners in Family Practice. Matt spent 4 years as an Emergency Medicine provider prior to joining IGA and brings with him a wide breadth of knowledge including critical care and family practice. He joined Idaho Gastroenterology Associates in 2017. Matt likes to spend his spare time with his wife and two children in the mountains and particularly enjoys music, woodworking, and mountain biking.

Renee Wilson, PA-C

Renee received her Master’s Degree in Physician Assistant Studies from the Arizona School of Health Sciences in Mesa, AZ, in 2004. She returned to Boise and spent 8 years in family practice and women’s health before joining Idaho Gastroenterology Associates in the summer of 2013. Renee and her husband have 4 children, including twins. She enjoys spending time with her family in the outdoors, traveling, camping, hiking, gardening, and cooking.

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