(570) 569-2250 info@prohealthmedpa.com



P Kevin Gehin, DC is the Owner and Director of CoreMedical Alliance and Wyoming Valley Spine & Nerve Institute located in Pittston, Pennsylvania. He earned his Doctorate degree from Palmer College of Chiropractic in Davenport, Iowa in 2002. Upon graduation he owned and operated several clinics in the Indianapolis, IN area as well as provided treatment for families in the Amish communities throughout northern Indiana.

Understanding the need for specialized homeopathic care in Northeastern Pennsylvania, he sold his clinics and relocated to Pennsylvania.

Dr. Gehin and his team of specialists believe in an integrated approach to helping patients achieve their wellness goals and enhance their quality of life by treating the actual condition rather than the symptoms while utilizing state of the art technology. With this philosophy in mind, Dr. Gehin is proud to offer care options such as regenerative medicine, decompression, sexual health treatments for men and women, hair restoration, facial rejuvenation, vampire face lift, breast lift, and more. Dr. Gehin’s patients appreciate the way he educates patients one-on-one to truly understand their condition and the treatment options available to them so they can live their very best life.

Dr. Gehin resides in Northeast Pennsylvania with his wife and three children. He enjoys traveling often, amateur radio, and spending time with his family and friends across the county.


Jose Derr is Board certified by the American College of Osteopathic Family Physicians. He received his Doctor of Osteopathic Medicine from the Philadelphia College of Osteopathic Medicine. He also holds a Master of Science in Physiology and a Bachelor’s of Science in Zoology from the Pennsylvania State University.

Dr. Derr has over 35 years of experience as a family practice physician in outpatient and hospital settings. He is highly motivated and is a dedicated provider of quality primary health care. He has demonstrated abilities with skilled nursing care and rehabilitative medicine. Dr. Derr retired from active practice after 36 years but continues to enjoy practicing part time.

Dr. Derr is a member of the American Osteopathic Association, a member of the Pennsylvania Osteopathic Association, is a board-certified member of the American College of Osteopathic Family Practitioners, a member of the Alumni Association of Philadelphia College of Osteopathic Medicine, is a Diplomat of the National Board of Examiners, and is American Heart Association certified in Healthcare Provider Basic Life Support.

Dr. Derr and his wife Sherri (CRNP) have three adult children residing from Florida to Boston and also have 2 grandchildren he enjoys spending time with. In his extra time, he loves to golf, travel, and stays current in medicine through journals and conferences.


Liz Yavorski

Liz Yavorski has a strong background in customer service, and is always striving to help others. 
With a degree in Psychology, Liz is an empathic person who loves connecting with people, making new friends, and is always quick to give out a helping hand to those in need. She is very positive, quick learner, and always sees the good in people. She is currently working for her medical assistant certificate, so she can continue helping the people she cares about. 
Some of her favorite hobbies include baking, drawing, spending time with her family, and helping her boyfriend. Her favorite animal is a hedgehog, she loves coffee and her idol is her dad. 


Marissa Voda, Medical Assistant, has been with Core Medical since 2014 working part time and summers while carrying a full time school schedule. She is currently a Junior in the Nursing Program at Mansfield University in Mansfield, PA. Upon receiving her nursing degree she plans to pursue a Master’s Degree as a Nurse Practitioner.

Marissa loves working with our awesome patients and watching them get out of pain and back to better health. She wants each patient to have the very best experience during their time in our care. Marissa is able to provide support throughout the clinic from working the front desk to providing assistance to the attending physician during treatments.

Marissa loves being outdoors, traveling, hunting, watching drag races, spending time with family and friends and her two cats, Tank and Archie.


Sandy Gehin, Office Manager, has managed medical clinics with Dr. Gehin for more than 12 years. Having worked as a Human Resources Manager in manufacturing, logistics/supply chain, and health care, Sandy has a passion to help people reach their goals, resolve challenges, and enhance their quality of life.

Sandy’s 25 plus years of combined Human Resources and Supervisory experience have given her a unique perspective which she brings to our growing team of professional providers and staff members. Together we share a genuine philosophy to serve our patients as individuals, to treat our patients like family and to offer the highest quality of health care services and products available.

Sandy is a native of Pennsylvania. She earned her Master’s degree of Human Resources Management from the University of Scranton and holds a Bachelor of Science Degree in Business Administration, a Bachelor of Science Degree in Human Resources Administration and an Associates’ degree in Psychology from King’s College of Wilkes-Barre.

Sandy resides in rural Pennsylvania with her loving husband and three kids who are currently full-time, college students majoring in Wildlife Management, Pre Med and Biochemistry. In her spare time, Sandy enjoys traveling, reading, and spending time with family.


Makayla Voda, Medical Assistant, has been with Core Medical since 2017. She works part time and summers while going to school full time. Makayla is currently a freshman at the University of Scranton in Scranton, PA. She is majoring in Biochemistry, Cell, Molecular Biology and Criminology. Makayla plans to pursue a medical career in dermatology.

Makayla loves assisting patients from initial scheduling to following up on their progress as patients receive treatment and start gaining their quality of life back.

Makayla is an avid painter and participates in the Wyalusing Community Theater. She loves to travel, read, bake and spend time with family and friends as well as her two cats, Tigger and Simba.


Julie is a very caring, empathetic, and self motivated Licensed Practical Nurse who has almost 20 years of experience in the medical field. She has worked at a wide variety of areas which includes chiropractic, OB-GYN, Pain Management, and more.  Patient support, treatment, care, and support are of the utmost importance and has always been a top priority for Julie. She is always willing to learn and is a great team player who also shares her experiences with others.
  Julie loves her family and enjoys spending as much time with them as possible.  She has a husband and two beautiful daughters. Whether they are going to amusement parks, bowling, on vacation, or just staying home, they always have a great time together. 


“You may not control all the events that happen to you, but you can decide not to be reduced by them. If you cannot make a change, change the way you have been thinking. You might find a new solution.”

Maya Angelou

“Don’t force anything in your life. Feel the people, the circumstances, and if they don’t feel good to you, it is because you are not aligned with them. Always seek alignment.”

Roxana Jones

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