Meet the Doctor

DR. JEREMIAH RETHWISCH earned his Doctorate of Chiropractic (DC) from Northwestern Health Sciences University in Bloomington MN, and holds a Bachelor's (BS) degree in Biology from Wayne State College. He is also a NSCA Certified Personal Trainer® (CPT), is Acupuncture Certified, and is a Certified Chiropractic Sports Physician® (CCSP®). He has worked in family practice, and in clinics that specialize in automobile accidents, acRethwischJeremiah0570__2_.jpgupuncture, and neurology. Dr. Rethwisch has additional post graduate training in neurology and electrodiagnostics through the Carrick Institute in Cape Canaveral FL. He is also a Whiplash and Brain Traumatology Graduate of the Spine Research Institute of San Diego.   His diverse background has prepared him for any patient he is presented with.

Dr. Rethwisch is a member of the Nebraska Chiropractic Physician's Association (NCPA), American Chiropractic Association (ACA), American Chiropractic Board of Sports PhysiciansTM, Northwestern Health Sciences University Alumni Association, and Millard Business Association (MBA). He has served 3 terms on the board of directors for the NCPA as the Omaha District Representative, and is currently the secretary for the Nebraska Board of Chiropractic.

Dr. Rethwisch's interests and hobbies include: golf, mountain biking, exercise & fitness, hunting, fishing, camping, skiing, water sports, local politics, cooking, and gardening. He lives west of Omaha with his wife Mindell and their 4 kids: Hudson, Harper, Paxton and Pierce.

DR. CASS THIELEN is originally from Elkhorn, NE where she grew up riding and showing horses and playing basketball. Initially, Dr. Cass’ goal was to become a veterinarian, until her horse needed chiropractic care. After watching her horse adjusted, Dr. Cass decided to see a chiropractor herself. She found great relief from daily headaches and a passion for chiropractic in the process. Dr. Cass graduated from Iowa State University with a Bachelors in Animal Science, then attended Northwestern Health Sciences University and graduated top of her class with her Doctorate of Chiropractic (DC). 

Dr. CassDr. Cass has training in Diversified, Thompson and Activator techniques, as well as specialized training in extremities. She is a member of the Nebraska Chiropractic Physician's Association (NCPA) and Millard Business Association (MBA). Dr. Cass is also a Certified Animal Chiropractor through the International Veterinary Chiropractic Association (IVCA) and Licensed Animal Therapist in Nebraska. She truly enjoys meeting and educating families on how to maintain a healthy lifestyle and how chiropractic can help them achieve their health goals

In her free time, Dr. Cass enjoys reading, hanging out with her fiancé and their dog, and riding and showing her horses.

Office Hours

Our Regular Schedule


6:50 am-6:00 pm


6:50 am-6:00 pm


6:50 am-6:00 pm


6:50 am-6:00 pm


6:50 am-12:00 pm


8:30 am-10:00 am




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Reviews By Our Satisfied Patients

  • "I have referred many patients, including my wife and both parents, to Dr. Jeremiah Rethwisch for various conditions including cervical or lumbar radiculopathy (pinched nerves in the neck or low back), lumbago, cervicalgia, SI joint dysfunction, hip pain, and muscle spasms just to name a few. I have found chiropractic care and joint manipulation to be essential components in the conservative management of spine related conditions and other orthopedic conditions."
    Stephen R. Brown, M.D., Orthopedic Surgeon
  • "I am thankful for Dr. Rethwisch’s multimodal treatment approach including mobilizations, manipulations, Active Release Therapy, and utilization of Cold Laser Therapy. He has been a great adjunct in treating my headaches and thoracic hypomobility. We have also successfully used a multidisciplinary approach with common patients. His compassionate and comprehensive care, in addition to his expertise, is highly respected. The staff is friendly, prompt, and always willing to find the perfect "
    Amy L. Millar, PT, Physical Therapist

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