A 2008 graduate of the University of Michigan Dental School, Dr. Jon Feinauer dreamed of becoming a dentist back in high school and says, “I have never once wished I went into any other line of work.” He loves getting to know his patients personally and sharing their excitement about marriages, new jobs, children, travel, and recommendations for good books. He is well-versed in current dental technology and treatments and loves putting those skills to use to make dental work go faster, easier, and less complicated than his patients expect.

Dr. Ramiro Lambaria joined our team after graduating from Case Western Reserve University School of Dental Medicine, serving three years as a dentist in the United States Army, and working with the Navajo Nation in Northeastern Arizona. A childhood accident with a baseball showed him the importance of compassionate dentistry, and he strives to offer that same level of care to every patient he meets. His doctor-patient relationships are built on trust and individualized treatment plans to meet each person’s needs, and he loves the chance to work with both his patients and coworkers, along with “doing something as artistic and impactful as dentistry.”

Your dental health and comfort are the top priorities for Dr. Feinauer and Dr. Lambaria.

Ashley completed her dental assistant certification in 2012. She enjoys meeting and caring for Stonecastle’s patients in a fun and relaxing atmosphere. Outside of the office she has one canine child named Skylar. She enjoys golf, tennis, bicycling and camping.
Debbie graduated in 1991 from the Grand Rapids Community College Dental Hygiene Program. She cares for her patients on a personal and professional level. She believes in emphasizing the importance of beginning dental education and home care at an early age. Debbie has worked exclusively for Stonecastle Dentistry since becoming a licensed hygienist; she values Stonecastle Dentistry’s fun and compassionate nature. Debbie is married and has three beautiful children.

Jessica graduated from Delta College in 2012 with an associate’s in applied science and certification in local anesthesia and nitrous oxide. She is ecstatic to join a dental team that allows her to design and implement non-surgical protocols to encourage positive outcomes and sustainability for each individual. Jessica was born and raised in Mt. Pleasant and now calls Grand Rapids home for the past four years. She owns a grey chinchilla named Gizmo. She enjoys nearly all genre’s of movies and music, outdoor activities, and spending time relaxing with friends and family.

Jill is our office manager and is responsible for the financial aspects of the practice. Her goal is to help patients through the maze of insurance benefits, and to help them find financial solutions to obtain necessary dental treatment. She considers it an honor to work in an atmosphere that values its employees, and works diligently to provide patients with individualized positive and professional care. Jill has two daughters; she enjoys walking, reading, and gardening.

JoAnn joined the Stonecastle office team in the spring of 2014. A graduate of Michigan State University, JoAnn spent several years in international grantmaking. Her favorite part of working at Stonecastle Dentistry is interacting with fun coworkers and patients. She has three children. In her spare time, JoAnn enjoys the outdoors, traveling, movies, music, and spending time with friends and family.

Julie has been assisting since 1996. She had the pleasure of joining Stonecastle Dentistry in April of 2016. She loves working with a team that is very caring and compassionate. Dr. Wemmer and Dr. Feinauer work very hard at providing their team with all the essential tools to help our patients maintain beautiful and healthy smiles. We love new technology and continuing education. Julie has a husband, son and yorkie shitzu dog. She enjoys scrapbooking, antiquing, and baking. Their son keeps them busy with his traveling baseball and basketball teams.

Lauren graduated from the University of Michigan in 2019 with a Bachelors Degree in Dental Hygiene. She holds certifications in local anesthesia and nitrous oxide. Lauren was born and raised in the Grand Rapids area and has been a patient of Stonecastle Dentistry since she was a child. It is her personal goal to assist every patient in achieving a lifetime of dental health in both a professional and compassionate manner. In her free time, Lauren enjoys camping, skiing and spending time with her family and friends.

Renee started working at Stonecastle Dentistry in 2018. Between meeting with patients and the staff at the Castle, she finds coming to work fun every day. When not working, Renee likes watching hockey and college football, dining out, and working in her flower garden.

Tammy graduated from GRCC in 1994 with an Associates Degree in Dental Hygiene, then joined Stoncastle’s team in October of 1994. She considers it her personal mission to help each individual protect and improve their oral health. Along with her concern for each of Stonecastle’s patients, Tammy always has a smile and a laugh ready to help ease treatment anxiety. Tammy is happily married and has two adorable canine children. She enjoys aerobics, walking, and reading. She is also interested in holistic health and fitness and has a degree in fitness and nutrition from ICS.


Monday 8:00am - 6:00pm

Tuesday 7:30am - 4:30pm

Wednesday 9:00am - 6:00pm

Thursday 7:30am - 4:30pm


Call us at 616.458.8593 to schedule an appointment and become a part of our community!


455 Cherry Street, SE
Grand Rapids, MI 49503


Get dental care now and pay later with CareCredit®

Pay Online

Get connected to our Patient Portal where you can make payments, view account balances, check upcoming appointment dates and view educational videos on dental health and procedures.

Already have your Patient Portal set-up?