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Our Doctors


The combined clinical experience of all our doctors equates to over 90 years. Our doctors are also enrolled in ongoing educational certification within the subjects of Integrated Health Care, Functional Medicine, Nutrition, and Advanced Chiropractic Technique.

One of the advantages of a multiple doctor office is having access to more than one doctor’s opinion. This equates to more comprehensive and thorough care. Referrals to massage therapists, lifestyle counselors, dietary and medical specialists complete our teamwork approach.

  • DR.

    Dr. Kathy Roth Pizzella (Dr. Roth) is the director of Health Horizons and has been part of the team for over 20 years.  She is a summa cum laude graduate of Palmer College of Chiropractic in Davenport, IA and completed her pre-chiropractic education at Penn State University. 

    Her passion lies in assisting others in achieving optimum function through chiropractic and natural healing.  She is certified in the Webster Technique, used on pregnant women to assist with better baby position and birth outcomes, and works closely with many local midwives, doulas and child birth professionals.  She holds advanced certification in prenatal and pediatric chiropractic care through the ICPA, International Chiropractic Pediatric Association. Additionally, she is a trained doula and has expertise in Neuro Emotional Technique (NET) and cranial adjusting, including Endonasal Release Technique. She enjoys the outdoors, yoga and spending time with her husband, Justin, and children, Kristopher and Lia. Both of her children were born at home and have been adjusted since birth.  

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  • DR.

    Dr. Katherine Palombini has been in practice for 40 years and she continues to enjoy helping her patients optimize their health and improve their lifestyle habits. She received her undergraduate degree from West Virginia University and her Doctor of Chiropractic degree from Sherman Chiropractic College.

    In 1979, she and her husband, Dr. Frank Cicirello, founded and developed Health Horizons, originally Oakmont Chiropractic Life Center, to become the premier practice for natural health care as it exists today.

    As a life long learner, she received her certification in Functional Medicine in 1998 and is continually advancing her education to keep her practice innovative. She practices Functional Nutrition by utilizing Methyl Genetic Testing, Blood Chemistry, Functional Lab Testing, Applied Kinesiology, and Food Sensitivity Testing. Additionally, she is certified in Frequency Specific Microcurrent treatment as well as the Shape Reclaimed Program, an anti-inflammatory lifestyle program.

    In 1992, she established Today's Market, a natural foods store in Oakmont, to provide a source of organic food and high-quality food supplements to the community. She has raised her 5 children in a natural lifestyle and has been a long-time proponent of natural birth and parenting. Along with spending time with her children and two grandsons, she enjoys biking, gardening, healthy cooking, pilates and travel. 

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  • DR.

    Dr. Greer is a cum laude graduate of Sherman College of Chiropractic and completed his pre-chiropractic education at Westminster College. He has been practicing for over 20 years. His main focus is helping people achieve higher levels of neurological, structural and postural health and function through chiropractic care. 

    He greatly enjoys offering practical advice that can be applied to everyday life, and encourages people to take ownership of and responsibility for their health and well-being. Having two children of his own who regularly ask Dad for adjustments, Dr. Greer is experienced with delivering gentle and specific adjustments that are well-suited for young people.Dr. Greer has a great love of music and the outdoors. Having lived in Ireland for 7 years, he also has a great passion for The Emerald Isle and Irish Rugby. 

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  • DR.

    Dr. Smiesko is a recent graduate of Parker University in Dallas, Texas and completed her B.S. in Biology at Penn State University. Although she had been enjoying living in the warm weather in the south, she is not a new face to the area or our office.

    Dr. Smiesko grew up in Pittsburgh and started at Health Horizons as a patient in 2009 and later became an assistant in our office.  She loved chiropractic so much that she knew it was what she wanted to do for the rest of her life!

    While in college, Dr. Smiesko became certified in the Webster Technique through the International Chiropractic Pediatric Association (ICPA). This technique focuses on restoring normal pelvic function and biomechanics, which are vital during pregnancy. Additionally, she holds an advanced proficiency certification in Activator Technique that covers spine and extremity conditions. She has also been an active member of the Professional Baseball and Football Chiropractic Societies and has learned various methods to better serve athletes.

    While completing her year of clinical requirements, Dr. Smiesko was chosen to be a part of the chiropractic team at the Dallas VA Hospital. The Dallas VA is the most competitive and highly sought after internship offered at Parker University due to the experience that is gained from the complex cases and high patient volume encountered. In her free time, she enjoys exercising, outdoor activities, volleyball, snuggling with her cat and watching all Pittsburgh sports. 

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