Meet the best dental staff in Chicago

Meet the best dental staff in Chicago

Nika Roman, RDH

Nika has been a valued team member at Smile On for over two years now. She strongly believes in patient education and making patients feel more confident with their smile. She strives to make your visit at Smile on a fun and comfortable one. In addition to dental hygiene Nika has an incredible passion for dance. Originally from Brooklyn, Nika is still making Chicago her home and enjoys taking advantage of everything this great city has to offer. When she’s not out exploring Nika is usually dancing–rehearsing for regional and national competitions or instructing dance classes for dancers of all ages.

Jaclyn Zachgo, RDH

Jackie takes pride in helping patients enjoy healthier smiles. After earning her degree in dental hygiene from Parkland College in Champaign she was a dental assistant prior to practicing dental hygiene. Jackie regularly attends continuing education courses refining her skills and staying up-to-date on the newest techniques and products she can use to deliver you with the best possible care. She loves having the opportunity to work with our patients and to build personal relationships-encouraging them as they improve their dental health. Since Jackie is new to Chicago, when she’s not working you can usually find her enjoying everything the city has to offer with her two dogs, a yorkie and a lab mix. They love boating, hiking, camping and anything related to fitness.

Natalia Kaminski, RDH

Natalia is a great addition to the Smile On team and she is dedicated to making the dental experience positive for kids of all ages. Prior to earning her degree in dental hygiene at the College of Lake County she started her career in dentistry as an assistant at a pediatric office. When she’s not busy staying up-to-date on the latest techniques and technology attending continuing education courses , Natalia is very creative and enjoys crafting and baking. She also enjoys spending time traveling as well as exploring Chicago with her fiancé and Pomeranian puppy Sailor, especially all the live music and street festivals in the summertime.

Monica Palma

Monica has been part of our Smile On team since May, 2014. She is currently a senior at Northeastern Illinois University and is working towards her Bachelor’s Degree in Business Management. She enjoys meeting new people every day at our office. Monica also enjoys helping patients understand their insurance benefits and scheduling them accordingly. In her spare time Monica likes to spend time with her family. On the weekends you can find her out in the soccer field helping her husband with his soccer team, and taking their son to his games. She also enjoys reading, going on walks and exploring all of the fun places Chicago has to offer.

Kassandra Rangel

Kassandra became part of our team in March, 2015. She was born and raised in Chicago, attended Noble Street College Prep and then Illinois State University. Her goal is to make every experience at Smile On, whether in the office or on the phone, the best dental experience you’ve ever had. Her positive attitude, outgoing personality, ability to speak Spanish fluently and her interest and excitement for dentistry helps her succeed in making patients feel comfortable. When she is not working Kassandra enjoys spending quality time with her family and friends and English bulldog Kuky.

Jessica Kuhn

Jessica has been working with Dr. Poncza for nearly a decade and has been at Smile On since before we opened our doors. With over 15 years of dental practice management experience she strives to make sure that each and every patient experience is as comfortable and pleasurable as possible. Together with Dr. Poncza and the Smile On team, Jessica prides herself on the relationships created over the years with our patients and their families, as well as with the Lakeview neighborhood and dental community. She regularly attends continuing education courses regarding both dentistry and dental sleep medicine to ensure that we are able to provide our patients with the most current and up to date patient educational tools and insurance awareness. When she’s not busy at Smile On, Jessica enjoys traveling, attending the theater, trying new restaurants and just hanging out with her nephews.

Diana Arnaldo

Since her teens Diana has known that she wanted to work in the dental field. She joined the Smile On team over two years ago with several years of experience and a passion for the field of dentistry. Diana understands how important it is to make patients feel comfortable and makes this her top priority. When she is not assisting, Diana enjoys being active both running and working out with her husband and dog as well as painting, reading, dancing and playing soccer.

We are excited to introduce you to the newest Smile On team members. We know you’re going to love them as much as we do!


Cheryl is our newest member of the team. She has been practicing dental hygiene for eight years now. She enjoys making her patients feel comfortable while in the chair. By being gentle, and have a friendly disposition. Cheryl is a big animal advocate and has been very active in that arena. She has done volunteer work in South Africa, Thailand, and most recently the Galapagos Islands. When she’s not traveling the world on animal rescue missions, she spends time with her Beagle, Piper.


Our newest dental assistant, Eboni, is a Chicago native and has been a member of the Smile On team since September 2016. Hardly a year here with our office, Eboni compliments our professional environment and adds just enough energy to make your visit a little more pleasant. Eboni loves meeting and helping patients, assisting Dr. McDonald and promoting good hygiene habits almost as much as she loves Beyoncé! When she’s not busy at work, you can find her at the movies, exploring the city or checking out new restaurants all while keeping her Smile On.


Natalie, who joined our team March 2017 began her career in the dental field as an assistant and has now been a hygienist for over seven years. She enjoys working with her patients both clinically and on a personal level to help them achieve excellent oral and overall physical health. She loves sharing her knowledge of dental hygiene and discovering the best treatment for each individual patient. When she’s not engaging with her patients, Natalie enjoys working out, cooking, spending quality time with family, friends, and her puppy Laela.