Shankar Raman is a Gastroenterologist in Des Moines, Iowa. Dr. Raman is rated as an Advanced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Diverticular Disease, Hernia Surgery, and Pancreaticoduodenectomy.

Peter Grubel is a Gastroenterologist in Des Moines, Iowa. Dr. Grubel is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Bile Duct Obstruction, Gallstones, Choledocholithiasis, Endoscopy, and Colonoscopy.

Ryan Roe is a General Surgeon and an Orthopedics provider in Des Moines, Iowa. Dr. Roe is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Umbilical Hernia, Hernia, Gallstones, Choledocholithiasis, and Gastrostomy.

Dennis Whitmer is a General Surgeon in Des Moines, Iowa. Dr. Whitmer is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Hernia, Gallbladder Disease, Gallstones, Hernia Surgery, and Gallbladder Removal.

Soren Kraemer is a Colorectal Surgeon and a General Surgeon in Des Moines, Iowa. Dr. Kraemer is rated as an Advanced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Diverticular Disease, Hernia Surgery, and Ileostomy. Dr. Kraemer is currently accepting new patients.

Poonputt Chotiprasidhi is a Gastroenterologist in Des Moines, Iowa. Dr. Chotiprasidhi is rated as an Advanced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Gastric Dysmotility, Gastrectomy, and Endoscopy.

Jeffrey Neitzel is a General Surgeon in Des Moines, Iowa. Dr. Neitzel is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Ogilvie Syndrome, Chronic Subdural Hematoma, Subdural Hematoma, Colostomy, and Gastrostomy.

Mayin Lin is a Colorectal Surgeon and a General Surgeon in Des Moines, Iowa. Dr. Lin is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. Her top areas of expertise are Hemorrhoids, Anal Fissure, Pilonidal Sinus Disease, Appendectomy, and Colostomy. Dr. Lin is currently accepting new patients.

Willie Mcclairen is a General Surgeon in Des Moines, Iowa. Dr. Mcclairen is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Chronic Subdural Hematoma, Subdural Hematoma, Delirium, Colostomy, and Gastrostomy.

Molly Gross, MD joined The Iowa Clinic in 2017 after moving back home from Utah to be closer to her family in Beaverdale. She chose colorectal surgery because of mentors in medical school and residency who showed her the great parts of being a colorectal surgeon. She enjoys the diversity and wide variety of cases colorectal surgery has to offer. The most rewarding part of her job is helping people feel comfortable talking about something they are uncomfortable talking about. Dr. Gross is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. Her top areas of expertise are Retroperitoneal Inflammation, Familial Colorectal Cancer, Colorectal Cancer, Bladder Reconstruction, and Hernia Surgery.

Marco Olivera-Martinez is a Gastroenterologist and a Hepatologist in Des Moines, Iowa. Dr. Olivera-Martinez has been practicing medicine for over 44 years and is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Cirrhosis, Visceromegaly, Hepatitis, Liver Transplant, and Colonoscopy. Dr. Olivera-Martinez is currently accepting new patients.

Kendall Reed is a General Surgeon and a Surgical Oncologist in Des Moines, Iowa. Dr. Reed is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Chronic Erosive Gastritis, Diverticular Disease, Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), and Endoscopy. Dr. Reed is currently accepting new patients.

Mathew Severidt is a General Surgeon in Des Moines, Iowa. Dr. Severidt is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Hernia, Gallbladder Disease, Gastrectomy, and Sleeve Gastrectomy. Dr. Severidt is currently accepting new patients.

Cameron Wagner is a General Surgeon in Des Moines, Iowa. Dr. Wagner is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Hemorrhoids, Gallbladder Disease, Choledocholithiasis, and Gallstones. Dr. Wagner is currently accepting new patients.

Dr. Fahler had the opportunity to work with our Gastroenterology (GI) physicians during his residency training in which they treated him as a colleague and showed great cohesiveness among the group. The GI team and the quality of The Iowa Clinic overall is why Dr. Fahler decided to join the practice. Early in his training, he worked in a GI Clinic where he developed a strong interest for disorders of the GI tract. That and the balance between clinical and procedural medicine are what attracted him to the field. Dr. Fahler is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Ulcerative Colitis, Crohn's Disease, Colitis, Gastrectomy, and Endoscopy.

Amber Tierney, MD decided to join The Iowa Clinic because of our reputation for great patient care. Dr. Tierney is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. Her top areas of expertise are Crohn's Disease, Ulcerative Colitis, Hemorrhagic Proctocolitis, Gastrectomy, and Colonoscopy.

Daniel Opheim, MD, joined The Iowa Clinic Colorectal Surgery Department in 2022 and chose the Clinic because he wanted to work alongside a physician group that has a collective mission to provide the best possible care for its patients. He chose to specialize in colorectal surgery because colorectal disorders are unfortunately very common in our society, and he felt it would allow him to make a positive impact on many lives. He enjoys all aspects that colorectal surgery has to offer but is most interested in robotics, minimally invasive surgery, and endoscopy procedures. The most rewarding part of his job is when he is can offer a solution to a patient’s diagnosis or health issue - and the patient is able to make a full recovery. Dr. Opheim is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Rectal Prolapse, Anal Fissure, Mesenteric Venous Thrombosis, Bladder Reconstruction, and Hernia Surgery.

Ramon Reyes is a Gastroenterologist in West Des Moines, Iowa. Dr. Reyes is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Ulcerative Colitis, Esophagitis, Swallowing Difficulty, Endoscopy, and Gastrectomy.

Kyle Rogers is a Colorectal Surgeon in West Des Moines, Iowa. Dr. Rogers is rated as an Experienced provider by MediFind in the treatment of Familial Adenomatous Polyposis. His top areas of expertise are Familial Colorectal Cancer, Lynch Syndrome, Colorectal Cancer, Colonoscopy, and Colostomy.

Xiaoping He is a Gastroenterologist in Clive, Iowa. Dr. He is rated as an Advanced provider by MediFind in the treatment of Familial Adenomatous Polyposis. Her top areas of expertise are Berdon Syndrome, Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, and Endoscopy.