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.

Ashleigh started working at Stonecastle in 2021 after graduating from Grand Rapids Community College’s Dental Hygiene Program. She holds certifications in local anesthesia and nitrous oxide sedation. Ashleigh loves educating patients, working in a career that encourages her to keep learning, and spending time in Stonecastle’s supportive team atmosphere and “really cool building.” Born and raised in Grand Rapids, she enjoys the town’s museums and restaurants along with reading, camping, and spending time with family.

Ashley earned her dental assistant certification in 2012 and now leads the practice’s assistant department, where she handles training, inventory, SDS updates, and OSHA requirements. She experienced a lot of orthodontic work as a child and always liked going to the dentist. Now she works hard to create the same kind of fun, relaxing atmosphere for Stonecastle patients. Outside of the office, she enjoys golf, watching hockey and football, playing fantasy football, traveling, exploring, and hanging out with her dogs, Skylar and Timber.

Chelsea graduated from dental assisting school in 2012 and has worked as a dental assistant and front desk team member at Stonecastle since 2020. Her favorite part about her job is being able to soothe patients who are anxious about dental treatment and seeing the results of their restored smiles. She also appreciates working with a staff that is deeply dedicated to their patients and makes their fellow team members feel like family. Away from the office, she is a self-described bookworm and enjoys spending time in the gym and with her family.

Danielle graduated from a dental hygiene program, is licensed in Michigan and Florida, and joined Stonecastle in 2021. She always knew she wanted to help other people in her career, and she enjoys helping educate and motivate patients on the importance of their oral health. Danielle says Stonecastle stood out to her because of the office’s teamwork, positivity, motivation, and family atmosphere. When not visiting family in Florida, she likes to hike, bike, run, ski, read, volunteer, try new things, and learn more about health and fitness.

Debbie graduated in 1991 from the Grand Rapids Community College Dental Hygiene Program. She cares for her patients on a personal and professional level and encourages them to understand the importance of starting dental education and home care at an early age. Debbie has worked exclusively for Stonecastle Dentistry since becoming a licensed hygienist. She values the practice’s fun and compassionate way of interacting with patients and putting them at ease. She is married and has three beautiful children.

Jessica graduated from Delta College in 2012 with a degree 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 that encourage positive outcomes and sustainability for each patient. Jessica was born and raised in Mt. Pleasant and now calls Grand Rapids home. She enjoys nearly all genres of movies and music, outdoor activities, and spending time with friends, family, and her grey chinchilla, Gizmo.

Jill is our office manager and is responsible for handling the financial aspects of the practice. Her goal is to guide patients through the maze of insurance benefits, helping each person find financial solutions that will allow them to receive the dental treatment they need. She considers it an honor to work in an atmosphere that values its employees so highly and works diligently to provide patients with individualized positive and professional care. Jill has two daughters, and she enjoys walking, reading, and gardening.

JoAnn joined the Stonecastle office team in the spring of 2014. You can find her greeting patients in our reception area as well as handling insurance claims and billing. A graduate of Michigan State University, she spent several years in international grantmaking before moving to dental healthcare. Her favorite part of working at Stonecastle is interacting with fun coworkers and patients. In her spare time, JoAnn likes hiking, kayaking, eating out, enjoying music and films, and spending time with friends and family, including her three children.

Julie has been a dental assistant since 1996 and joined our practice in 2016. She loves working with a team that is caring, compassionate, and gives her all the essential tools to help each patient maintain a beautiful and healthy smile. She is also a fan of pursuing new technology and continuing education to find new and better ways to improve patient care. Julie has a husband, son, and Yorkie-Shih Tzu dog. She enjoys scrapbooking, antiquing, baking, and cheering on her son at his travel baseball and basketball games.

Lauren graduated from the University of Michigan in 2019 with a bachelor’s degree in dental hygiene. She holds certifications in local anesthesia and nitrous oxide sedation. Born and raised in the Grand Rapids area, she has been a patient of Stonecastle Dentistry since she was a child and is now proud to be part of our team. 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 in 2018, serving as our treatment coordinator and Wednesday cookie deliverer. She loves her team of “outstanding coworkers” and says that between spending time with them, helping patients navigate their insurance benefits, and having a job in the Castle, she finds it fun to come to work each day. Outside of the office, Renee likes watching hockey and college football, working in her flower garden, going to new restaurants in Grand Rapids, and spending time with her two kids.

Samantha was born and raised here in Grand Rapids and now works at Stonecastle taking care of the community she loves. After graduating from dental assistant school in 2015, she started her career in oral surgery, then changed paths to work with children for a while before joining our practice. Our patients and staff love her bubbly, outgoing personality and passion for helping people. When not at work, she enjoys reading, hanging out at Silver Lake Dunes, and spending time with her family, boyfriend, and cat Dexter.

Tammy graduated from GRCC in 1994 with a degree in dental hygiene, then joined Stonecastle’s team in 1994. She considers it her personal mission to help each patient 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®

Patient Portal

Get connected to our Patient Portal where you can see appointment history, complete forms, check upcoming appointment dates and view educational videos on dental health and procedures.

Already have your Patient Portal set-up?

Bill Pay

Pay your bill securely online. We accept most credit cards.