Robert A. Berger, MD
Robert Berger, MD, FACS, is a highly skilled general surgeon bringing a number of specialties to Flagstaff Surgical Associates and its patients in the Flagstaff, Arizona, area. He focuses on general surgery as well as in surgeries associated with trauma, bariatrics (obesity), and laparoscopic surgery, a minimally invasive procedure used to examine organs in the abdomen. He also has a focus in robotics surgery, which allows for technically advanced and beneficial procedures.
Dr. Berger is proud to have started the Bariatric Surgery Center at Flagstaff Medical Center in 2004, where he now serves as the medical director. His dedication also aided the hospital in achieving recognition as a state-designated Level 1 Trauma Center. Dr. Berger currently serves as the assistant medical director of trauma services.
Dr. Berger received his medical degree from the University of Arizona College of Medicine in Tucson, where he also completed his internship in surgery and senior residency in general surgery. He finished his fellowship in laparoscopic at the University of Illinois Hospital in Chicago.
Dr. Berger is board-certified and a fellow of the American College of Surgeons. He is passionate about his involvement on a number of boards, committees, and the opportunities he’s had as a speaker and writer published in various medical journals and beyond.
Dr. Berger is continually advancing surgery options and procedures in his various fields of interest, always focusing on patient comfort through their journey.
When Dr. Berger is not caring for patients at Flagstaff Surgical Associates, he spends time with his wife and children enjoying the Arizona outdoors.
Weight Management Clinic | Northern Arizona Healthcare
Andrew J. Aldridge, MD
Andrew Aldridge, MD, FACS, is a surgeon skilled with a special interest in minimally invasive and technologically advanced laparoscopic, bariatric, and trauma surgeries. He brings his expertise to Flagstaff Surgical Associates in Flagstaff, Arizona. Dr. Aldridge was named Flagstaff Medical Center’s Physician of the Year in 2007 after showcasing his leadership abilities, patient care priorities, and contributions to advancing medicine. He is a fellow of the American College of Surgeons.
Dr. Aldridge is the surgical education director at Flagstaff Medical Center and has extensive training in performing all types of surgeries. He also utilizes the highly effective da Vinci® robotic system, which aids surgeons with advanced robotic-assisted instruments during surgery.
Dr. Aldridge was a crucial part of the creation of the Bariatric Surgery Center at Flagstaff Medical Center, which supports the treatment of obesity, and its recognition as a state-designated Level I Trauma Center. He served as the medical director of trauma services for a decade.
Before joining the Flagstaff, Arizona, community, Dr. Aldridge received his medical degree from the University of Arizona College of Medicine in Tucson and completed his internship and residency at the University of Arizona Medical Center. He was the medical staff president and chief of surgery at Flagstaff Medical Center and has served on a number of boards, including the Northern Arizona Healthcare board of directors. In addition to these involvements, Dr. Aldridge is also a clinical professor of surgery at the University of Arizona.
While Dr. Aldridge has a passion for improvement and innovation in his chosen surgery fields, he always puts the patient first. His dedication to his patients shows through with his compassionate and knowledgeable care when embarking on a surgery; Dr. Aldridge stays in communication with patients during each step of the process.
When Dr. Aldridge is not working, he enjoys the outdoors with his family.
Weight Management Clinic | Northern Arizona Healthcare
Kate E. Preston, MD
Kate Preston, MD, FACS, has been a surgeon with Flagstaff Surgical Associates since 2016. Serving all ages and genders in the Flagstaff, Arizona, community, she brings her expertise in general surgery as well as breast, pediatric, and laparoscopic surgery to the practice.
Dr. Preston completed medical school at Louisiana State University in New Orleans and went on to finish her residency at the Phoenix Integrated Surgical Residency Program in Arizona. Dr. Preston gained superb experience and training in general surgery during residency, which offered experience in a Level I Trauma Center. Dr. Preston is a board-certified general and breast surgeon and a fellow of the American College of Surgeons.
Dr. Preston’s passion for patient care combined with her accomplished training makes for effective patient experiences in breast surgeries, and beyond. She focuses on the total well-being of patients in their surgery journey, opting for minimally invasive procedures, high-tech options, and clear levels of communication. Although she has a particular interest in treating breast issues, she serves those with a spectrum of surgical needs when they seek treatment at Flagstaff Surgical Associates.
Daniel E Wesche, MD
Daniel E. Wesche, MD, FACS, is an expert surgeon bringing over 25 years of experience to Flagstaff Surgical Associates. He treats patients of all ages and genders in Flagstaff, Arizona, and focuses on general, pediatric, and laparoscopic surgery, a minimally invasive surgical procedure.
Dr. Wesche is proud to be a key member of surgical care solutions and professionals in the Northern Arizona area. As part of Flagstaff Surgical Associates since 1998, he is a mentor at the practice. In 2002, he was named Flagstaff Medical Center’s Physician of the Year for his leadership and dedication to supplying innovative and compassionate care to the community.
Dr. Wesche received his medical degree from the St. Louis School of Medicine in Missouri and completed both his internship and residency in general surgery at Maricopa Medical Center in Phoenix, Arizona. He is board-certified in surgery from the American Board of Surgery. Dr. Wesche has been on a number of boards and served as the chair of surgery, and he was the medical director of trauma services at Flagstaff Medical Center. Dr. Wesche is a respected speaker who has also published many articles on his fields of interest in surgery. He is also a fellow of the American College of Surgeons.
While at Flagstaff Surgical Associates, Dr. Wesche provides patients in need of surgery with an open, empowering dialogue and long-lasting results. His enthusiasm for cutting-edge technology makes for effective examinations and minimally invasive surgical solutions.
When Dr. Wesche is not working, he enjoys biking, skiing, and hiking with his wife and kids.
Sarah Sohail, M.D.
Sarah Sohail, MD is a board certified general surgeon bringing her expertise to Flagstaff Surgical Associates. She has completed additional training in minimally invasive and bariatric surgery with a special interest in robotic assisted surgeries.
Prior to moving to Flagstaff, she completed her surgical residency at the University of Arizona in Tucson. She then did a year of Fellowship training in Advanced Gastrointestinal Surgery at Banner Gateway Medical Center in Gilbert, AZ. During her fellowship year she developed a passion for fighting obesity and helping patients achieve healthier lifestyles and weight loss through bariatric surgery. Her other interests include management of GERD, hernia surgery, and nonsurgical weight loss options.
She spends her free time exploring the trails with her dog Piper, tending to her house plants, reading a good book, and cooking with friends. She’s always looking for new food recommendations- whether it be local restaurants, fresh recipes, or international travel to try new delicacies.
Kathleen Collins, DO
Kathleen Collins, DO, is a board-certified general surgeon who joined Flagstaff Surgical Associates in 2022. She has robust training in minimally invasive surgical techniques and utilizes robotic-assisted surgery for improved patient outcomes. Dr. Collins is trained in many areas of general surgery with a special interest in hernia repairs, breast, and colorectal surgery.
Before joining Flagstaff Surgical Associates, Dr. Collins earned her medical degree at Kansas City University while simultaneously obtaining her Master of Business Administration in Healthcare Leadership from Rockhurst University. She went on to receive training in general surgery at Ascension-Macomb Oakland Hospital in Madison Heights, Michigan. While in training, she received extensive experience and insight into trauma, bariatric, and general surgery.
Dr. Collins resides in Flagstaff with her husband and their two dogs. She enjoys reading, movies, and exploring new places in her free time.
Erin M Enlow, PA-C
Erin Enlow, PA-C graduated from College of Holy Cross in Worcester, Massachusetts with a B.A. in Political Science and served four years in the United States Navy after graduation. She then pursued her goal of entering the medical field by graduating in 2010 from Arizona School of Health Sciences (A.T. Still University) with a Master’s degree in Physician Assistant Studies.
Erin has worked in general and bariatric surgery since graduation, but has clinical experience in family/internal medicine and wound care as well. She works in both clinic and hospital settings directly with patients to help determine a plan of care, either before or after surgery. She enjoys caring for patients and working in such a diverse field of medicine.
As a Physician Assistant, she is a member of a comprehensive healthcare team and cares for patients in collaboration with the patient’s surgeon.