About Us

Dr. Nick GreinerNick Greiner, DC, CFMP

Dr. Nick Greiner has been interested in health and fitness since since a young age.  He has participated in organized sports his whole life.  His passion for sports has led him to pursue a USA Weightlifting Level 1 Coaching Certification and serve as a team doctor to our USA Wrestling, Weightlifting, and Judo Olympic athletes.  He is currently active as a competitive Brazilian Jiu Jitsu practitioner.

Throughout his years as an athlete, Dr. Nick suffered from severe digestive issues.  In his journey to find healing, he has discovered the pitfalls of conventional nutrition, fitness, and healthcare.  He continues to work with athletes of all ages, but his true passion is for helping people overcome health challenges and experience an amazing quality of life.  His training as a Certified Functional Medicine Physician allows him to provide the tools and resources for people to get well.

Dr. Nick is an author and an avid reader.  In his personal time, Dr. Nick enjoys spending time with his wife and his son.  They enjoy the outdoors and traveling together. 

Dr. Erin Greiner

Erin Greiner, DC

Dr. Erin's personal health journey began at a young age, as well.  She suffered from chronic ear infections and severe allergies in early childhood.  As a young adult, she experienced thyroid and hormone imbalances, stemming from Epstein-Barr infection.  Conventional medical approaches did not provide much help and she knew there must be a better way.  Implementing specific nutrition, advanced functional medicine, and lifestyle protocols have allowed her to experience freedom from all of her previous health challenges, fueling her passion to help others overcome their health issues, and allowing her to enjoy life with her family.

Dr. Erin loves connecting with like-minded individuals and helping people find practical ways to achieve better health.  In her personal time, she enjoys spending time with her husband and son.  She practices yoga and is always creating a new healthy food creations in the kitchen.

Stephen Fisher, MD

Dr. Stephen Fisher is a Board-Certified Radiologist.  He earned his undergraduate and doctorate degrees from the University of Illinois.  He interned at the University of Minnesota,  Brookdale Hospital Center, and Cook County Hospital, then served as a medical officer in the United States Army.   Dr. Fisher completed residency training in Diagnostic Radiology from UPMC Pittsburgh, then served in primary care practice at General Medical Practice and Specialists, as a faculty member of the University of Pittsburgh Medical School, University of California, and SUNY Downstate Medical Center.  Dr. Fisher is a member of the Allegheny County Medical Society, Pennsylvania Medical Society, American College of Radiology, and the Radiology Society of North America.  

Dr. Fisher enjoys spending time with his wife and he has a passion for learning and providing exceptional care for his patients of all ages.

Seth Dinowitz, MD

Dr. Dinowitz is Board-Certified in Emergency Medicine.  He earned his undergraduate and doctorate degrees from the State University of New York at Stony Brook.  Dr. Dinowitz completed residency training in Emergency Medicine at Morristown Memorial Hospital, then practiced emergency care at Jersey Emergency Medical Specialists, Emergency Medical Associates, EmCare, Urgent Care Now, and Ocean Care Center. Dr. Dinowitz is a member of the American Board of Emergency Medicine.

Ivana Rados, CRNP

Ivana received her Bachelor of Science in at Wheeling Jesuit University and her Master of Science in Nursing in MSN/FNP at Franciscan University of Steubenville. She has a wide variety of experience and expertise within the medical profession, first as a RN, then as a Nurse Practitioner.  She has undergone extensive training in both traditional and regenerative medicine and is passionate about sharing the amazing benefits of regenerative therapies.

Ivana enjoys spending time with her husband and children, as well as traveling.

Kelsey Zadrozny, NP-C

Kelsey received her Bachelor of Science in Nursing at Duquesne University and her Master of Science in Nursing at Carlow University. She completed certification in Holistic Nutritional Counseling at the Institute for Integrative Nutrition.  She has extensive knowledge and clinical experience in traditional medicine, regenerative medicine, and is also passionate about helping patients with nutrition, lifestyle, and holistic options.

Kelsey enjoys spending time with her husband and children, and reaching new levels with her personal health and fitness goals.

Karah Barber, RN, BSN

Karah graduated from Bloomsburg University of Pennsylvania, receiving a Bachelor of Science in Nursing, in 2007.  She has served in a variety of roles within the medical profession, refining her skills and growing her passion for helping people.  She is professional, caring, compassionate, and loves helping patients get well.

Karah enjoys spending time with her husband, children, and pets.  

Beverly Bryce

Beverly serves as our team's patient relations and administrative leader.  Before Beverly joined as a team member, she was a first a patient.  When she stared care, she suffered with low back and knee pain, which quickly resolved using the natural care provided by our doctors.  Beverly embraced the holistic approach and over the years improved her own health and shared her knowledge to help friends and family embrace a healthier lifestyle, as well.  Beverly does everything she can to help provide patients with a first-class experience and enable them to receive exceptional care.

Beverly enjoys spending time with her husband, children, grandchildren, and her cat.  She loves the outdoors and enjoys hiking and biking.  

As leaders in natural health, our team of experts has received extensive training in clinical nutrition, cellular healing and detoxification, functional endocrinology, female hormonal issues, neurology, and regenerative treatments. This allows them to deliver incredible results to patients with chronic problems and complex conditions. Greiner Health Solutions has been providing cutting-edge healthcare services for more than ten years and our doctors have become highly sought after for their expertise. Drs. Nick and Erin Greiner traveled to the 2012 London Olympics, as official doctors to the USA Wrestling, USA Judo, and USA Weightlifting teams, including providing care for gold medalists Jordan Burroughs and Kayla Harrison.

Greiner Health Solutions brings a unique approach to caring for patients with new millennium diseases, such as Lyme disease, thyroid disease, diabetes, autoimmune conditions, hormonal issues, cancer, fibromyalgia, neurotoxic illness, fatigue, mold and heavy metal exposure, autism spectrum disorders, weight loss resistance, and other health conditions. With a special focus of healing the body at the cellular level, the doctors are skilled in uncovering the hidden root and true cause of numerous health challenges, by utilizing cutting-edge diagnostic and functional analysis, with research-based laboratory testing.

Services and programs are customized to each patient, and are designed to educate and empower a person to restore healing and methodically reverse their ailments and achieve incredible health.

The Greiner Health Solutions team is inspired by the amazing success stories from patients who have gotten their lives back. We seek to provide answers to those who are seeking healing and are on a mission to save lives by educating and leading people to amazing health.

We work with local patients in the greater Pittsburgh area, as well as virtually with patients across the United States and around the world.

Now accepting new patients.


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