Dr. Brewley is a board-eligible, fellowship-trained orthopedic surgeon who specializes in treating complex diseases of the upper extremity. His expertise includes advanced shoulder and elbow arthroscopy as well as primary and revision joint replacement surgery of the upper extremity. He earned his medical doctorate from Howard University College of Medicine in Washington, DC, and completed his orthopedic residency at Albany Medical Center in New York, where he served as chief resident. He completed a highly coveted shoulder and elbow fellowship in Tampa, FL, with Drs. Mark Frankle and Mark Mighell at the Florida Orthopaedic Institute. Under their supervision, Dr. Brewley performed over 150 shoulder replacements and over 100 arthroscopic shoulder procedures. Upon graduation, he completed additional training in Japan under Hiroyuki Sugaya, MD, and Teruhisa Mihata, MD, PHD, to learn additional arthroscopic techniques, including superior capsular reconstruction for irreparable rotator cuff tears. Dr. Brewley’s research interests include age-related outcomes in shoulder arthroplasty, alternative treatments for post traumatic elbow arthritis, and biomechanics stability in revision shoulder arthroplasty. He is a fellow member of the American Shoulder and Elbow Surgeons and an editorial reviewer for the Journal of Shoulder and Elbow Surgery. In his leisure he enjoys reading, hiking, writing poetry, and cheering for the New York Yankees.
Uterine Diseases
Brent Knudson, DO
Dr. Knudson is an orthopedic surgeon who brings advanced expertise to the care of people with bone, joint, and muscle disorders. His areas of focus include joint replacement surgery of the knee, hip, and shoulder. He is also passionate about sports and taking care of sport-related injuries, as well as routine fracture care.
Originally from Mandan, he earned a bachelor’s degree in Biochemistry/Nutrition from the University of Minnesota, Twin Cities, and received his medical degree at Kansas City University of Medicine and Biosciences. His residency training was completed through Michigan State University at McLaren Oakland, known for its advanced orthopedic program. During his residency, Dr. Knudson trained in all aspects of orthopedic surgery, with special emphasis on joint replacement, direct anterior hip replacement, sports medicine, and trauma care.
His experience also includes five years as a flight surgeon with the US Air Force and Air Force National Guard, two and a half years of which were spent with the 5th Medical Group at Minot AFB. The remaining time was spent in Japan, Afghanistan, and Michigan.
Dr. Knudson and his wife, Kelly, have three children. Whether fishing or hunting, they enjoy spending their free time in the beautiful North Dakota outdoors.
Cody Pehrson, MD
Dr. Pehrson specializes in orthopedic surgery with a focus on complex trauma and hip reconstruction. His expertise includes anterior hip replacement, an innovative approach that can significantly reduce pain and downtime. He also does total shoulder replacement. Dr. Pehrson is fellowship trained in orthopedic trauma, with specialized expertise in pelvic and acetabular fracture care. He’s dedicated to helping patients regain mobility and return to the activities they enjoy. A magna-cum-laude graduate of Utah State University, he earned his medical doctorate from the Medical College of Wisconsin and received residency training in orthopedic surgery at UCSF Fresno, where he was voted Resident of the Year for the 2014-2015 academic year. Following residency, he completed his Orthopaedic Trauma Fellowship with Sonoran Orthopaedic Trauma Surgeons in Phoenix, AZ, where he provided orthopedic trauma care at the four Level I trauma centers in the Phoenix area and trained extensively in reconstructive and revision surgery of the hip, with an emphasis on utilizing the anterior approach. Dr. Pehrson and his wife Jocelyn have five children. They enjoy spending time outside, traveling, and trying new things. Dr. Pehrson is a member of the American Academy of Orthopaedic Surgeons and the Orthopaedic Trauma Association.
Carol Schaffner, MD
Carol M. Schaffner, MD, is dedicated to providing individualized care that meets a woman’s changing needs throughout her lifetime. Originally from South Dakota, she earned her medical degree from the University of South Dakota School of Medicine in Vermillion. Her internship and Ob/Gyn residency were completed at Tulane University Hospital, New Orleans, LA. She’s committed to comprehensive healthcare for women, with a special interest in infertility and pregnancy.
Erica Riordan, MSN, CNM
A certified nurse midwife, Erica Riordan, MSN, CNM, provides general obstetric and gynecological care for women, as well as contraception counseling and preventive medicine. The Illinois native earned her Bachelor of Science in Nursing from Aurora University in Illinois and received a Master of Science in Nursing with a focus on midwifery from Frontier Nursing University, Hyden, Ky. Her experience includes 10 years working as on obstetrics nurse at Illinois Valley Community Hospital. She also was associated with Birth Care Staffing, an agency that assists hospitals in fulfilling specialized nursing needs. She is a member of the American College of Nurse Midwives and Midwives Alliance of North America.
Margaret Nordell, MD
A North Dakota native, Dr. Nordell practiced obstetrics and gynecology in the San Francisco area before returning to North Dakota in 1993 to join Trinity Medical Group. She’s an advocate for women’s health with a particular interest in problems related to adolescence, pregnancy, osteoporosis, and menopause. Dr. Nordell is board certified in obstetrics and gynecology and a fellow of the American College of Obstetrics & Gynecology.
Alexandre Kindy, MD
Board certified in Orthopedic Medicine, Dr. Alexandre Kindy has been a member of Orthopedic Associates since 1997. A native of Montreal, Canada, he earned his medical degree from the University of Alberta in Edmonton, interned at St. Thomas Medical Center in Akron, Ohio and completed his residency at the University of Calgary where he served as Chief Resident.
Dr. Kindy offers a full-spectrum of non-operative orthopedic services and also serves as the care system’s Medical Director of Value Initiatives driving strategies to help improve patient access and the quality of care across the system.
Daniel Lee, DO, MMS
An orthopedic surgeon board certified and fellowship trained in sports medicine, Dr. Lee specializes in arthroscopic procedures of the shoulder, hip, and knee, including ACL reconstruction. His expertise includes rotator cuff and labral repairs of the shoulder, meniscus repairs, arthroscopic procedures of the hip, as well as arthroscopic surgery of the elbow and ankle. A graduate of New York College of Osteopathic Medicine, Dr. Lee received residency training in orthopedic surgery at New York Medical College and the University of South Florida and completed his post-residency fellowship in sports medicine at Aspen Sports Medicine Foundation in Colorado. He subsequently practiced at Indiana University Health in Bloomington and later at Lake Huron Medical Center in Michigan, serving as attending physician in general orthopedics and sports medicine. Throughout his medical career Dr. Lee has applied his expertise to serve college and high school athletes both on and off the field. He’s dedicated to treating individuals of all ages, getting them back to the activities they most enjoy. When he’s not serving patients, Dr. Lee enjoys spending time with his family as well as skiing, golfing, and other outdoor activities.
Jennifer Johnson, MD
As a board-certified Obstetrician/Gynecologist, Dr. Johnson is dedicated to providing individualized care that meets a woman’s changing needs throughout her lifetime. A graduate of the University of North Dakota School of Medicine and Health Sciences in Grand Forks, she completed her Ob/Gyn residency at Akron General Medical Center in Ohio, where she gained experience in the areas of high-risk obstetrics, reproductive endocrinology and infertility, in addition to performing many minimally invasive procedures using the da Vinci robotic surgery system. She is a member of the American Association of Gynecologic Laparoscopists, the American Congress of Obstetricians and Gynecologists and the American Medical Association. Dr. Johnson is a native of Minot.
Lori Dockter, PA-C
Lori Dockter, PA-C, is a certified physician assistant specializing in women’s health and primary care. As a member of Trinity’s team of Ob/Gyn and Women’s Health providers, Lori provides the full range of primary care services for women of all ages, including health and wellness counseling, physical exams, menopause care, contraception management and obstetrics.
A native of Rolette, ND, Dockter earned her RN diploma from Trinity School of Nursing. She worked in the Newborn Intensive Care Unit at Trinity Hospital and the birthing unit at St. Joseph’s Hospital. She completed the physician assistant program at the University of North Dakota School of Medicine and Health Sciences. Lori is a member of the ND Association of Physician Assistants and the American Academy of Physician Assistants.