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Our Physicians 

Expertise. Compassion. Dedication.

Meet the Dedicated Team at Providence Gastroenterology
At Providence Gastroenterology, our team of skilled and compassionate healthcare professionals is committed to delivering exceptional care and enhancing your digestive health. Get to know the experts who are devoted to your well-being—every step of the way.

Serge Sorser, MD 

Dr. Sorser is a highly experienced gastroenterologist who completed his medical degree at the University of Michigan Medical School. Dr. Sorser went on to receive advanced training in gastroenterology and hepatology at the University of Michigan, followed by subspecialty fellowship training in therapeutic endoscopy at St. Luke's Hospital in Milwaukee, Wis. Dr. Sorser is a respected member of the medical community and has been recognized as one of Hour Detroit magazine's annual "Top Docs".

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Rachelle Packey, PA-C

Rachelle graduated from Michigan State for undergrade and went onto Western Michigan for Physician Assistant school. I graduated from there in 2014 and have worked in Gastroenterology since. She did take a break from medicine to be a stay at home mom and have been excited to be back to work. She enjoys spending time with her family and have a passion for exercising in any form. Rachelle sees patients on Monday and Wednesdays in our Novi office on behalf of Dr. Greer and Dr. Sorser. Rachelle looks forward to meeting and treating all of her patients.

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Mark DeVore, MD

Dr. De Vore, one of the most respected gastroenterologists in Metro Detroit, leads our team at Providence Gastroenterology. He has been consistently recognized as a top doctor by Hour Detroit magazine and is a Fellow of the American College of Physicians. Dr. De Vore's expertise in diagnosing and treating a variety of digestive disorders is unparalleled, and he is committed to providing his patients with the best possible care. When you choose Providence Gastroenterology, you can rest assured that you are in the hands of the most dedicated and skilled professionals in the field.

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Julia Greer, MD

At Providence Gastroenterology, we understand how important your gastrointestinal health is. That's why we offer a full range of gastroenterology care and general gastrointestinal treatment, including endoscopic procedures. Dr. Greer is passionate about providing patients with a personalized approach that emphasizes healthy habits and tailored medical advice. We are committed to addressing your unique needs and providing expert care that's tailored to your specific situation.

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Our Services

Physicians of Providence Gastroenterology are highly trained in performing colonoscopy for colon cancer surveillance and other colon-related diseases. In addition, all aspects in the field of gastroenterology, including diagnostic and therapeutic procedures such as EGD (Esophagogastroduodenoscopy), ERCP (Endoscopic Retrograde Chalangiopancreatograpy), EUS (Endoscopic Ultrasonography), Esophageal Motility, Esophageal Ablation, DBE (Double Balloon Enteroscopy) can be performed by our highly skilled expert gastroenterologist.

"Dr. Greer is absolutely amazing. Her bedside manner is fantastic, she is caring, explained everything and she is also funny whiched helped me during my office visit and through the procedure I had done. Some of these reviews are hard for me to understand and had me nervous about coming here. However, my experience was the complete opposite. The front desk we're quick, but very friendly, and my doctor was amazing. Thank you Dr. Greer and staff, keep up the good work!"

Dara F.

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