Meet Our Team


Practice Manager

Kim just celebrated her 7th anniversary with Bonnie Helfner DDS PC.  She’s been an integral part of Dr. Helfner’s team since 2009 and has been working hard to create a warm and welcoming environment for all to enjoy. Leading the team is an opportunity she takes very seriously and she is tremendously grateful for all of the wonderful people she’s met along the way. Kim works very closely with Dr. Helfner to stay connected to the Commack community whether it’s volunteering at the CCC 5K, hosting our Halloween Candy Buy Back or helping Helfner’s Heroes raise over $75,000 in the fight against cancer in our annual Relay for Life fundraiser. When Kim isn’t in the office you can find her spending quality time with her husband & two children. Kim also loves spending time at the beach, & cooking healthy, delicious meals for family and friends.


Registered Dental Hygienist

Helen joined Dr. Helfner’s team in 2002. She holds a BS degree in Economics from NYIT and is a graduate of the Farmingdale State College School of Dental Hygiene. Helen is a New York State provider of infection control training for healthcare professionals in addition to writing a bi-monthly blog for, pertaining to the field of infection control in health care settings. As an American Heart Association Instructor, Helen teaches courses in basic life support to other health professionals. She is actively involved in continuing education, participating in numerous study groups to stay up to date in the latest research and clinical practices in dentistry. Helen is a passionate educator, instructing her patients about the benefits of optimal oral health and its positive effects on overall health. When she is not working Helen enjoys spending time with her family and being outdoors, biking, kayaking, running, and hiking..


Registered Dental Hygienist

Sarah has been in the dental field for more than fifteen years. After working as a dental assistant for ten years, Sarah graduated from the State University of New York at Farmingdale as a dental hygienist where she earned the prestigious Guggenheim award for excellence and proficiency in the profession of dental hygiene. Sarah was also an active member of the Student American Dental Hygiene Association where she was a historian and helped with organizing fundraisers & functions. Sarah joined our practice in 2009 and has been an instrumental team player ever since. She is very warm and compassionate, always putting the comfort of her patients before anything else. Having grown up on Fire Island, Sarah has a love for the beach and enjoys visiting there when she can. Sarah is married and has a beautiful son, Kyle, and just recently added a baby girl, Hailey, to their family. Sarah has a philanthropic side to her as well. She has participated in Relay for Life, Give Kids a Smile Day, and volunteered at the Cancer Walk in Farmingdale.


Registered Dental Hygienist

Iris is a Registered Dental Hygienist who joined our practice in 2015. She not only admires the work of both Dr. Helfner and Dr. Curro, but also appreciates the quality of patient care that we provide to our patients. Prior to earning her hygiene degree, Iris had been a dental assistant for over nine years and she truly enjoys working both disciplines. Iris believes that a healthy and beautiful smile not only make someone’s day, it also improves the oral and general health of any patient. In her spares time, iris enjoys drawing, painting, and listening to music.


Registered Dental Hygienist

Allison, a Kings Park native, received her Dental Hygiene Degree from Hudson Valley Community College in Troy, New York.  As a highly skilled dental hygienist with  more than 25 years’ experience, Allison absolutely loves her career choice and it shows in her performance. Allison joined Dr. Helfner’s during the summer of 2016 and had been recently offered a more permanent position.  She fit well with the office immediately. Allison is a member of the American Dental Hygiene Association and continues to take  continuing education courses to further her knowledge in the field.

Allison’s two daughters, Amanda and Lindsey, are her world.  As a single mom for most of their lives, she has been dedicated  to raising them to be independent and successful.  Mission accomplished!!  Allison recently got married and is looking forward to the next chapter. In her free time, Allison loves to travel, work in her garden and cook, take long walks and bask the warm sunshine. 


Dental Assistant

Doreen has been Dr. Helfner’s invaluable dental assistant since 1999. When Dr. Helfner first met her, she knew Doreen was talented. At a very young age, Doreen had already worked with many dental specialties including periodontics, oral surgery and orthodontics in addition to her extensive work with general dentistry. Doreen loves being a part of the team and she and Dr. Helfner have become like family. When Doreen is not working, she enjoys spending time with her beautiful family including her husband Nick, her adorable daughters, Ava and Bella, and her pet boxer, Roxie. Doreen also loves hanging out with friends and playing cards. Her favorite foods are Mexican and Italian, specifically foods with lots of cheese. Two of her favorite movies are Grease and Overboard. It’s no wonder that everyone who knows Doreen loves Doreen. She is genuine, compassionate and has such a big heart. A few years ago, Doreen donated nearly a foot of her hair to Locks of Love. In 2014, Doreen suggested to Dr. Helfner that the office participate in the Adopt-A-Family program during the holidays. It wound up being a tremendous success as the office “adopted” two families. She is a very special asset to this practice.


Dental Assistant

Yolanda started working for Dr. Helfner in January 2015. Yolanda may be new to the practice but not to the field of dentistry as she has been a dental assistant for the past twelve years and loves all aspects of dentistry.
When not at work Yolanda enjoys spending time with her husband Paul and her Puggle, Jax. She also enjoys cooking, taking walks, and travel. 


Administrative Assistant

Lori grew up in Commack and has lived in the Commack area for 45 years. She has been married to her wonderful husband Ronnie for over 20 years and they have two amazing children. Lori was a meeting planner for a pharmaceutical advertising agency in the city for many years until she started her family. After being a stay-at-home mom for 14 years, she decided to work for a local preschool, where she has been able to share her love for children for the past 7 years. Lori’s warm and friendly demeanor along with her strong work ethic, will add to our already top notch staff and wonderful front desk. Lori loves spending time with her family, connecting with her friends, walking her dog Roxy and reading a great book.


Administrative Assistant

Rosa has worked in the dental profession for over eight years and loves working with the public. She particularly enjoys talking to the patients and making them feel at ease. In her spare time, Rosa enjoys spending time with her daughter, Jeralyn, trying new restaurants and shopping. She also enjoys exercising and staying home and watching movies. Rosa looks forward to being a Helfner’s Heroes team member for many years to come.


Administrative Assistant

For the past 10 years, Dawn has been in the dental field, first starting out as a dental assistant, then branching out and expanding her knowledge to the financial end of dentistry at the front desk. Dawn’s consistent, nurturing personality drives her desire to be compassionate to the patients’ needs. For Dawn, true satisfaction occurs when she’s exceeded the patients’ expectations.   One of Dawn’s greatest assets is her expertise and knowledge of insurance plans. She loves helping patients  with their insurance questions and benefit plans. In her free time, Dawn is an independent jewelry consultant for Swarovski Crystal where she enjoys party planning for her hosts.
Dawn is also a mom and loves spending time with her daughter, cooking, and spending time with her family and friends.


Our newest member, Nichole, joined our team in July 2017. Nichole began working at her childhood family dentist when she was only 16 years old. From that point forward, she was determined and driven to grow as a dental professional. Nichole has been expanding her knowledge in the dental field for over 10 years. With her exceptional customer service skills and expertise in all aspects of dental billing, Nichole is well on her way to achieving her main goal – to provide our patients warm and sincere care. Nichole loves to give all she can to the needs of our patients. In her spare time, Nichole enjoys being in her garden, spending quality time with her son, cooking, having family dinners at her house, going to the beach, listening to music, and going for family bike rides with her son and fiancé, Joe. Nichole looks forward to a bright future with Dr. Helfner and Dr. Curro’s team!

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