Our Doctor

James P. Koshick, D.C.


 Dr. James Koshick is the practice owner since 1990 and a graduate of Palmer College of Chiropractic in Davenport, IA. He graduated as president of his class with international academic honors. Dr. Koshick is not only board certified in chiropractic but specializes in chiropractic rehabilitation and orthopedics. Having completed post graduate studies in both fields through the National College of Chiropractic in Lombard, Illinois. Dr. Koshick firmly believes that you must first identify the source of your pain before you can create an effective treatment plan. Dr. Koshick is very friendly and engaging but will take your case seriously. Dr. Koshick also spent nearly ten years on the Wisconsin Chiropractic Examining Board (WCA) serving the people of Wisconsin and the chiropractic profession. He looks forward to the opportunity to serve you, too. 

Our Therapists

Becca | Massage Therapist


Becca is a board certifed massage therapist specializing in therapeutic, deep tissue, sports massage, and myofascial release. She studied at the Wisconsin School of Massage Therapy where she graduated in 2009. 

Amy | Chiropractic Technician


 Amy has her associates degree from Herzing University and is certified as a chiropractic radiology tech as well as chiropractic tech. She receives regular continuing education from the WCA to ensure that you receive the utmost quality treatment while following out your doctor’s plan of care. Amy administers various treatments from electrical stimulation, therapeutic ultrasound, and mechanical traction. She really takes the time to listen to your concerns and communicates directly with your doctor to ensure the highest comfort possible during the treatment process.

Our Office Staff

Sierra| Front Desk



Sierra is the front desk associate of New Berlin Chiropractic.  She graduated in Esthetics from the AVEDA Institute in Milwaukee. Although she is a US citizen she was raised in Athens, Greece while her parents did missionary work. She moved to the US 7 years ago. Sierra’s interest in chiropractic care started in 2012 when she began seeing a chiropractor for back pain. She would like to advance her knowledge in the chiropractic field and is excited to be taking classes this spring to become a chiropractic tech. In her spare time she enjoys socializing with her friends and shopping. Her hobbies are cooking, hiking, makeup and photography.

Rena | Office Manager



Rena is the office manager of New Berlin Chiropractic.  She started her journey in the chiropractic field in 2003 as a radiology and chiropractic tech and worked her way into management which she has been doing for the last 12 years. Should you ever have any questions or concerns she is here to listen and help you in any way she can. In her spare time she enjoys spending time with her husband and 4 children. Her hobbies are cooking, baking, hunting and watching her children play sports!