Specialty: Orthopedics
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue              
Columbus, WI 53925           
920-623-1200

118 W Maple Avenue 
Beaver Dam, WI 53916
920-356-1000

As a physician assistant, Mandy provides care to orthopedic patients in both clinic locations. She graduated from the University of Dayton, Ohio, Physician Assistant Program and also earned her B.A. from Edgewood College in Madison WI. Mandy is a valued member of the orthopedic team, specializing in preoperative and postoperative care as well as osteoarthritis. She enjoys working with patients one-on-one to provide a more individualized care experience.

  • Specialty Orthopedics

Specialty: General Surgery
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue                
Columbus, WI 53925           
920-623-1200

118 W Maple Avenue
Beaver Dam, WI 53916
920-356-1000

Dr. Robb Whinney specializes in general surgery and is fellowship trained in surgical critical care and trauma surgery. He received his Bachelor of Science from Wilkes University in Wilkes-Barre PA and his DO from Philadelphia College of Osteopathic Medicine in Philadelphia, PA. He completed his residency in general surgery at Wyckoff Heights Medical Center in Brooklyn, NY where he served as Chief Resident. Dr. Whinney completed his fellowship training at Jackson Memorial Medical Center/ Ryder Trauma Center Miami, FL. He was an Associate Professor at Yale University and Washington University in St. Louis, covering the sections of Burn, Trauma, and Critical Care. Dr. Whinney is a board certified general surgeon by the Fellow American College of Osteopathic Surgeons and the American College of Surgeons. Dr. Whinney sees patients at the Columbus clinic location.

  • Specialty General Surgery

Specialty: Orthopedics
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue              
Columbus, WI 53925           
920-623-1200

118 W Maple Avenue 
Beaver Dam, WI 53916
920-356-1000

As a physician assistant, Andrew Tratar provides care to orthopedic patients in both clinic locations. He graduated from the UW-Madison Physician Assistant Program and also earned his B.A. in Biology from Ripon College.

  • Specialty Orthopedics

Fellowship Trained Hip and Knee Replacement Specialist
Specialty: Hip, Knee and Shoulder Replacement, Orthopedic Surgery
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue               
Columbus, WI 53925           
920-623-1200

118 W Maple Avenue 
Beaver Dam, WI 53916
920-356-1000

Dr. Niesen is one of only a handful of surgeons in the state who holds the distinction of being fellowship-trained in orthopedic joint replacement surgery; specializing in hip, knee and shoulder replacement. He received his Bachelor of Science from the University of Wisconsin-Madison and his MD from the University of Wisconsin School of Medicine. He completed his residency at the University of California, Los Angeles, where he served as Chief Resident and was honored with the Longmire Surgical Society Research Award. He completed an additional fellowship in joint replacement at the Mayo Clinic and is certified by the American Board of Orthopedic Surgery. Dr. Niesen sees patients at both clinic locations.

  • Specialty Orthopedics

Specialty: Orthopedics
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue              
Columbus, WI 53925          
920-623-1200

118 W Maple Avenue 
Beaver Dam, WI 53916
920-356-1000

As a nurse practitioner, Judy MacDonald sees orthopedic patients in both clinic locations. She is the Care Coordinator for Prairie Ridge Health Orthopedic Excellence Team specializing in assisting you with all your care needs from the surgeon’s office, to the hospital, and home.

Judy earned her nursing degree from Marian University and her nurse practitioner master’s degree from Concordia University. She is a board-certified Family Nurse Practitioner through the American Nursing Credentialing Center. She belongs to the National League of Nursing and the Wisconsin Nursing Association. 


  • Specialty Orthopedics

Specialty: Orthopedics
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue               
Columbus, WI 53925           
920-623-1200                     

118 W Maple Avenue 
Beaver Dam, WI 53916
920-356-1000

As a physician assistant, Tiana Imhoff provides care to orthopedic patients in both clinic locations. She received her Master’s of Science in Physician Assistant Studies from Rosalind Franklin University of Medicine and Science; prior to that, she attended University of Wisconsin-Madison and University of Wisconsin-Eau Claire for Physician Assistant Prerequisite coursework and a Bachelor of Science in Kinesiology with emphasis in Human Performance respectively.

  • Specialty Orthopedics

Specialty: Orthopedic Surgery
Prairie Ridge Health Clinic – Beaver Dam and Columbus

1511 Park Avenue               
Columbus, WI 53925           
920-623-1200                     

118 W Maple Avenue 
Beaver Dam, WI 53916
920-356-1000

Dr. Robert Coe has been taking care of patients in the Beaver Dam and Columbus areas since 1995. Receiving his M.D. from Hahnemann University School of Medicine in Philadelphia, he specializes in orthopedics and sports medicine. Dr. Coe is certified by the American Board of Orthopedic Surgery. Dr. Coe sees patients at both clinic locations. For more information visit Dr. Robert Coe – American Academy of Orthopaedic Surgeons.

  • Specialty Orthopedics

Specialty: Family Practice

Prairie Ridge Health Clinic - Beaver Dam and Marshall locations

118 W Maple Ave                              
Beaver Dam, WI 53916                      
Phone: 920-356-1000                        

301 W. Main Street, Suite A.
Marshall, WI 53559
Phone: 608-655-8181

Education: University of Wisconsin – Oshkosh; Oshkosh, WI– Master of Science in Nursing – Family Nurse Practitioner
Certifications: American Nursing Credentialing Center Certified
Professional Memberships/Affiliations: Basic Life Support, Wisconsin Nurses Association, American Nursing Association, American Association of Nurse Practitioners

  • Specialty Family Medicine