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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Palm Beach Eyes the leading provider of vision care products and services in Boynton Beach.

Dr. Greg Pientka

Dr. Greg Pientka graduated with a Bachelor of Science degree from Western Illinois University in 1990 and received his Doctor of Optometry degree from the Illinois College of Optometry in 1995. He spent his residency at the Bay Pines VA Medical Center in Bay Pines, FL after graduation. In 1998 Dr. Pientka became the operating owner of Palm Beach Eyes of Boynton Beach.  Dr. Pientka maintains membership in the American Optometric Association, the Florida Optometric Association, and the Palm Beach County Optometric Association.

Outside of the office, Dr. Pientka enjoys an active outdoor lifestyle with an emphasis on fitness and nutrition along with his wife Kathy and their two children.

Photo of Dr. Guerndt

Dr. Roxanne Guerndt

Dr. Roxanne Guerndt graduated with a Bachelor of Biomedical Science from University of South Florida. She then went on to receive her Doctorate in Optometry from Nova Southeastern University. In addition, she trained at Walter Reed National Military Medical Center and The Lake Nona Veterans Affairs where she helped manage a variety of ocular conditions. Dr. Guerndt (affectionately known as “Dr. G”) is also a member of the American Optometric Association, The Florida Optometric Association, and the Palm Beach County Optometric Association.

During her free time, Dr. Guerndt is an avid health enthusiast that likes to spend her nights doing varies activities such as running or biking. When not physically active, you may find this 6th generation Floridian gardening, boating, or playing with her new rescue kitten, Luna.


Kathy Pientka has worked together with her husband, Dr. Pientka since 1998.  As the Practice Administrator, Kathy works behind the scenes focusing on accounts payable, human resources, and business administration.  Over the years she has enjoyed technical patient care, as well as frame styling in our optical.

In her free time, Kathy enjoys staying active and spending time with family and friends.


Joelle graduated with an MBA and has been in the optical field for over ten years. Joelle works diligently to ensure that our office is running smoothly for each and every patient. She has an extreme weakness for sunglasses; and in her free time, enjoys live music or cheering on her favorite team, the Philadelphia Eagles.


With a combined experience of over 60 years, Rae and Sandra bring a comprehensive knowledge base to the team.   Each stylist has extensive experience in fitting frames and discussing lens options.  They work tirelessly in their commitment to offering our patients the best in frame style, quality, and durability.

Rae learned sign language in college and is a volunteer with many local charities.

Sandra is a Licensed Optician, fluent in Spanish, that you will find lounging at the beach each weekend with her husband and two beautiful daughters.


Laura and Amanda assist our doctor with each exam.  Each of our techs has a knack for patient care and in-depth knowledge of our high tech systems such as the Optomap Retinal Exam.

Laura is fluent in Spanish and has a great eye for her favorite hobby, photography.

AmandaAmanda has been helping with patient care as an Optometric Technician for five years. She’s a native Floridan, who loves the beach and spending time with her son.


Rachel and Cassandra are our team experts in insurance benefits and eligibility. Coming and going you can count the team to be proactive and prepared for your visit”

Rachel enjoys spending time with her family and is an animal lover.

CassandraCassandra recently moved from Bronx, NY. She began working in the optometric field four years ago and is interested in the opticianry field as well. She loves music and cooking for her family in her free time.


Photo of Kristin DorcelyKristin spends her days working hard to ensure that our billing department runs smoothly for both patients and the office.

She has medical field for over 5 years and enjoys spending time with her two rescue fur children. She is a true gamer at heart and spends as much free time as possible listening to music of all genres.