Our Team

Justin Kohll, R.Ph.

President and Owner of Preventative Medical Clinic

Justin started working in the Kohll family business at age 7. He is proud to be a third-generation Kohll family Pharmacist. In 1979, Justin was recruited to join the University of Nebraska swim team. After three years of swimming for UNL, he transferred to Creighton University Pharmacy School. While attending Pharmacy School he swam for C.U. and was also the Head Coach.

Following graduation from Pharmacy School in 1985, Justin’s father – Marvin – recruited him to work in the family business. During his time in the family business, Justin and his brother started over 15 new divisions of Kohll’s–one of them being Preventative Medical Clinic (PMC) in 2007.

Justin’s vision was to provide the most current age management and aesthetic services to the Omaha community to help patients feel and look their best. He also wanted to provide the most preeminent services with the most advanced trained educated employees. Justin’s experience and expertise have been recognized by the Nebraska Pharmacists’ Association, which honored him with the prestigious Innovative Pharmacy Practice Award in 2009.

Kristal Rydberg, RN

Kristal has been working in functional medicine since 2013. She is experienced in bio-identical hormone replacement therapy, nutritional IVs, The PMC Diet weight loss program and aesthetic services such as BOTOX® Cosmetic, laser treatments, chemical peels and collagen induction therapy (CIT).

Rydberg is currently working on obtaining her Master’s Degree in Nursing so she can continue her passion for helping people feel better from the inside out.

Stacy Niemi, MSN, APRN, BC

Stacy Niemi received her Masters of Science in Nursing from the University of Nebraska Medical Center. She also holds a Bachelor of Science in Corporate Fitness with a Minor in Nutrition from the University of North Dakota and an Associate Degree as a Physical Therapist Assistant. Niemi’s focus has been on health and wellness for over 25 years. She is certified by the American Academy of Nurse Practitioners as a Family Nurse Practitioner.

As a holistic practitioner and wellness advocate, Stacy offers a variety of services. A focal point of her practice is specializing in treating men and women’s hormone imbalances with the use of bio-identical hormones, cellular testing for food and chemical sensitivity and gut health. She assists patients in designing individual weight loss programs well as diagnosing and treating nutritional deficiencies. She incorporates aesthetics such as BOTOX, fillers, and chemical peels to improve overall well-being and self esteem. One of her latest passions is treating chronic and acute pain states with prolotherapy. Stacy’s goal is to keep people healthy, active and prevent the onset of chronic disease.

Michaela Collins, PA-C

Michaela Collins earned her Masters of Physician Assistant Studies from the University of Nebraska Medical Center. She also earned her Bachelor of Science in BCMB (Biochemistry, Cell and Molecular Biology), as well as another Bachelor in Science degree in Biology from Drake University. Collins has worked in the medical field for over 15 years and thoroughly enjoys helping others.

Michaela’s primary experience and interest is aesthetics. Collins has extensive, advanced training with injectables such as BOTOX and fillers, as well as KYBELLA and laser services. Michaela enjoys researching products and procedures and learning new techniques to improve patient outcomes. She also trains other healthcare professionals in these areas.

Michaela loves helping people put their best self forward through aesthetic services and hormone balancing. It gives her true joy to see how what she does can result in increased self-confidence and improved lifestyles

Jackie Stoddard, Patient Care Coordinator

Jackie may be the Patient Coordinator, but she does a little of everything at Preventative Medical Clinic. Her favorite part of working at PMC is the relationships she has built with all of PMC patients. Being hands on and helping the providers with procedures is also something she enjoys. Jackie loves everything about aesthetics and cosmetology, especially learning new things!

Before working at the PMC, Jackie came from a background of medical assisting and management. Being in the medical field is a passion of hers.

Jackie’s daughter Makenna keeps her busy outside of the clinic. Makenna is involved in dance and cheer. They love to listen to country music or dance to some hip hop! Jackie’s favorite time of year is Fall – She loves Halloween and anything spooky – but, her favorite part of Fall is Husker Football. GO BIG RED!!

Michaela Haney, Patient Care Coordinator

I am Kayla Haney! I have been with PMC for about 2 years now. I come from a background of account management, marketing, and cosmetics. I love relationship building and working with people. I enjoy helping the providers create the best patient experience possible! What I like most about working at Kohlls PMC is helping people reach their goals and making them feel good about themselves. My home life keeps me busy with my husband, Josh, son Hudson, and stepsons, Clayton and Austin. YES ALL BOYS! I have a passion for all things girly like make up and skin care which makes working here perfect for me! My favorite holiday is Halloween, I love all things scary and all things pumpkin spice!