Specialty: Family Medicine, Obstetrics
Prairie Ridge Health Clinic – Beaver Dam, Columbus

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925
920-623-1200


Dr. Colin Millar is a family medicine physician who enjoys caring for everyone: from birth to childhood and throughout adulthood. He finds developing relationships with patients and their families rewarding. He strives to carefully listen to his patients and help them in the clinic, hospital, and delivery room. He grew up in Wisconsin and enjoys trying new foods, cooking, playing ukulele & guitar, fixing & working on computers/electronics, and traveling. Most of all, he enjoys spending time with friends and family.

He received his Bachelor of Science in Bioengineering from the University of Pennsylvania and his MD from the University of Wisconsin School of Medicine and Public Health. He completed his residency at the Waukesha Family Medicine Residency at Waukesha Memorial Hospital in Waukesha, WI. He is board certified by the American Board of Family Medicine.

He sees patients at the Beaver Dam and Columbus clinic locations.

  • Specialty Family Medicine, Obstetrics
 
 

Specialty: Obstetrics and Gynecological Services (OB/GYN) 
Prairie Ridge Health Clinic – Beaver Dam, Columbus

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200        
    
Dr. Katheryn Kaldor wants her patients to feel that the patient, her patient’s family and she are a team. Whether you are navigating a new pregnancy or preparing to have surgery, Dr. Kaldor wants you to feel confident that she is with you every step of the way. Her philosophy with patients is the same as her philosophy in life: always do the right thing.

Dr. Kaldor received her Bachelor of Arts from the Kansas State University in  Manhattan, KS and her DO from the Kansas City University of Medicine And Biosciences, MO. She completed her residency at the Philadelphia College of Osteopathic Medicine, PA. She is a Fellow of the American Congress of Obstetrics & Gynecology (FACOOG) and is certified by the American Osteopathic Board of Obstetrics and Gynecology.


  • Specialty Gynecology, Obstetrics

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

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200        
             

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. She graduated from the University of Dayton, Ohio, Physician Assistant Program and also earned her B.A. from Edgewood College in Madison WI. 

Mandy grew up in the Madison area. In her free time, she enjoys reading, painting, boating, and spending time with her friends and family.

  • Specialty Orthopedics

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

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200

Dr. Robb Whinney has been providing care to patients for over 20 years 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. 

  • Specialty General Surgery

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

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200        
             

Andy is a valued member of the orthopedic team specializing in sports medicine, joint and fracture care, as well as preoperative care for joint replacement patients. He graduated from the UW-Madison Physician Assistant Program and also earned his B.A. in Biology from Ripon College.

Andy enjoys hiking, fishing, hunting, biking, archery, camping, and kayaking. He coaches baseball and enjoys attending local sporting events. He also enjoys woodworking, reading, cooking, and spending time with his children.

  • Specialty Orthopedics

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

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200        
             

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.

  • Specialty Orthopedics

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

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200        
         
As a nurse practitioner, Judy MacDonald sees orthopedic patients at both Columbus and Beaver Dam clinics. 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. Judy has been working in healthcare for over 25 years. She enjoys spending time with family and friends, being in the outdoors, gardening, boating, hiking, and sports.


  • Specialty Orthopedics

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

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
920-356-1000

Columbus Clinic
1515 Park Avenue
Columbus, WI 53925           
920-623-1200        
             
Tiana is a valued member of the orthopedic team specializing in sports medicine and osteoarthritis. She enjoys helping patients reclaim their lives. She received her Master’s of Science in Physician Assistant Studies from Rosalind Franklin University of Medicine and Science. She completed her studies at the University of Wisconsin-Madison and the University of Wisconsin-Eau Claire, where she received a Bachelor of Science in Kinesiology with an emphasis in Human Performance respectively. 

Tiana grew up in Wisconsin. In her free time, she enjoys spending time with her family, gardening, boating, baking, and reading a good book.

  • Specialty Orthopedics

Specialty: Family Practice
Prairie Ridge Health Clinic - Beaver Dam, Marshall

Beaver Dam Clinic
134 Corporate Drive
Beaver Dam, WI 53916
Phone: 920-356-1000

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

Kris has provided primary care for over 15 years. She offers an array of services including wellness and prevention, treatment of acute illnesses, and chronic disease management for patients of all ages. She obtained her Bachelor's and Master's in Nursing from the University of Wisconsin Oshkosh. She is certified by the American Nursing Association and the American Association of Nurse Practitioners. 

Kris grew up in Dodge County, Wisconsin. In her free time, she enjoys spending time with family, traveling, and quilting.

  • Specialty Family Medicine