OUR DOCTORS
ROBERT LEROHL DDS
Dr. Rob is a second-generation dentist who has long been passionate about science. Having fantastic mentors during his childhood, he quickly developed a curiosity in the outdoors and often wondered how the natural world worked. Upon entering college, Rob became interested in entomology, the study of bugs. However, along with a career, he also wanted a family.
He wasn’t ready to give up his hopes of being a family man to chase bugs in South America. Instead, he wanted a career where he could pursue science and raise a family. After returning to Brigham Young University from a two-year mission in France, he began his dentistry studies. Now, decades later, Dr. Rob finds it difficult to imagine a job he would love more.
Education & Training: Brigham Young University
Hometown: Flossmoor, IL
THOMAS LANDERS DDS
Dr. Tom attended the University of Illinois at Chicago and entered dental school after his sophomore year of college. He received his dental education at the University of Illinois College of Dentistry and received his DDS in 1995. He then completed a one-year residency program at the Veterans Administration Hospital in Loma Linda, California. In 2025, Dr. Tom is celebrating 30 years as a dental practitioner and loves practicing with Dr. Lerohl and Dr. Spiekerman in Sandwich.
Dr. Tom is a member and Pre-Fellow in the Academy of General Dentistry. He is married with two children and lives in Sandwich. Dr. Tom enjoys spending time with his family, loves to travel, he has a serious addiction to golf (especially when he gets to play Cantigny Golf Club in Wheaton, Illinois) and he will tell you that currently his favorite burger can be found at the Olde Tyme Inn in Sandwich, Illinois.
Education & Training: University of Illinois
Hometown: Itasca, IL
PENELOPE SPIEKERMAN DDS
Dr. Penny is a Southern California native. She holds a BS in Biochemistry from UC San Diego. She graduated in 1995 with Drs. Landers, Lerohl, and Schmit. After graduation, she completed a residency at Loma Linda VA Hospital in 1996. She moved to Chicago and practiced in Addison, IL before moving out to Sandwich in 2002 with her husband, Dr. Tom. As he helped Dr. Rob establish First Impressions, she worked part-time and raised their two children. In May of 2019, Dr.Penny joined the team as the practice was growing so rapidly. Adding more doctor time to the schedule means more patients can be seen in a timely fashion. Working part-time allows flexibility in her schedule to see patients and to cover for other Team Awesome members. She is cross-trained at all jobs, so you may see her up in the front and scheduling patients or back in hygiene cleaning teeth. There is never a dull moment in her day! Dr. Penny is also in charge of the Facebook page, promotions, and contests. In her free time, she enjoys baking, scrapbooking and photography, traveling, and bargain hunting.
Education & Training: UIC College of Dentistry
Hometown: Southern California
OUR STAFF
KALI C.
Dental Assistant
As a child, Kali was a First Impressions patient, and in 2014, she became an essential part of our team. She specializes in designing and milling crowns and abutments for dental implants. Her main goal is to master the design and production of crowns for our patients.
Education & Training: Dental Assistant Certification from Elgin Community College, accredited by the American Dental Association
Hometown: Sandwich, IL
Favorite Sports Team: Michigan University Wolverines
DAWN L.
Dental Assistant
Dawn joined the First Impressions team in 2018 with 20 years of experience as a dental assistant. She quickly proved herself as a valuable addition to our practice. In addition to her dental assistant duties, Dawn acts as our Dental Laboratory Manager. She keeps our lab stocked and ensures that all processes are running smoothly. Dawn makes impressions for bleaching trays, mouth guards, and fabricates them on-site in our dental laboratory.
Education & Training: Certifications in Polishing and Teeth Cleaning, and Dental Sealant Applications
Hometown: Somonauk, IL
Hobbies: Camping, Fishing, Boating, Any activities on the water
MELISSA M.
Dental Assistant
Melissa has been with the First Impressions team since 2014. Her duties are to assist the doctors with dental procedures, managing and ordering supplies, coordinator for dental implant planning and treatment. Melissa loves to bake, spend time with her family and vacation on the beach.
Education & Training: CPR Certified; Coronal Polishing Certified
Hometown: Plano, IL
Favorite Sports Team: Chicago Cubs
Hobbies: Baking, spending time with my family, vacations to the beach
ERIKA J.
Dental Assistant
Erika started with the office back in 2022 and has 8 years experience. She makes sure the office staff is up to date with CPR certifications as well as the first aid kit /medications for patient/staff care.
Education & Training: College Everest North Aurora – CPR Certified – Certificate: Coronal Polishing & Sealants
Hobbies: Cooking & spending time with family & friends
Hometown: Yorkville, IL
DALYS H.
Dental Assistant
My name is Dalys and I have been in the dental field for about 4 years as a dental assistant. I joined the First Impressions team in May of 2024. I was also a daycare teacher for 3 years and I love working with kids. In my free time I enjoy cooking new recipes and mastering family recipes, hunting when in season and hiking at local state parks.
Education & Training: Local Coronal Polishing Ceritificate/span>
Hometown: Sandwich, IL
Favorite Hobbies: Hunting, Hiking, Cooking
JONI B.
RDH
Joni has spent the last three decades of her career honing her skills in patient hygiene and treatment. As a Registered Dental Hygienist, she helps educate patients to keep their smiles looking great. Joni continues to be an asset to our awesome team and aims to give our patients the best experience possible.
Education & Training: Local Anesthesia Certification, Certified Dental Assistant (CDA) & RDH Degree from the College of DuPage Hygiene Program
Hometown: Plano, IL
Favorite Charity: American Cancer Society
KIM W.
RDH
Kim has been with the company for 21 years! Kim’s duties are to treat patients for recare dental cleanings, monitor patients for periodontal disease, patient education and patient record keeping. Kim loves to read, spend time with family and friends and go on vacation.
Education & Training: Bachelor if Science Forsyth School for Dental Hygienists/NortheasternUniversity, Boston, MA
Hometown: Marseilles, IL
Favorite Sports Team: Chicago Cubs
Hobbies: Reading, spending time with her family and friends, and vacationing
ALLISON F.
RDH
Allison provides gentle, thorough dental cleanings and educates patients on how to keep their mouths healthy.
Education: Dental Hygiene A.A.S from Parkland College and a BS in Community Health Education from Illinois State University
Training: Certifications Administration of Local Anesthetic and Administration of Nitrous Oxide
Hometown: Peru, IL
Hobbies: Cooking, gardening, and flea markets
SHELLY M.
RDH
Shelly has worked at First Impressions for 18 years and counting. She graduated form Northwestern University with an Associates in Dental Hygiene. She has been a hygienist for 33 years & she strives to continue to help her patients maintain a healthy smile. Outside of work she loves to spend time with her family & travel to the beaches of Florida as much as possible!
Hobbies: Volunteering & refinishing old furniture
Hometown: Yorkville, IL
Favorite Charity: Kendall County Special Olympics
LINDSAY V.
RDH
Lindsay has been a hygienist for 13 years and worked at First Impressions the whole time! She studied at Waubonsee Community College for 2 years and College of DuPage for 2 years. Before she started her career as a hygienist she was a dental assistant for 5 years. In her free time she loves to spend time with her family.
Favorite Sports Team: The Chicago Cubs
Hobbies: Listening to Music
Hometown: Sandwich, IL
REGINA A.
Front Desk | Insurance Specialist | Treatment Coordinator
Regina has been working at First Impressions for 31 years. Her favorite charity is the American Diabetes Association and in her free time she loves to go camping, sit around bonfires and especially go to a beach and spend time with her family!
Hobbies: Camping & vacation with her family
Hometown: Sandwich, IL
Favorite Charity: American Diabetes Association
BROOKE Z.
Front Desk | Insurance Specialist | Scheduling
Brooke has been a patient at First Impressions for 14 years and started working at First Impressions in 2022. She enjoys going to the YMCA, crocheting new projects, and spending time with her family.
Education & Training: Sandwich H.S., Taking College Level Courses
Hobbies: Crocheting, lifting weights/exercising
Hometown: Sandwich, IL
DIANA D.
Front Desk | Treatment Coordinator | Scheduling
Diana started at First Impressions in 2023, She has been a patient for 7 years. She loves to go hiking with her dog Bailey. Diana is also a huge fan of country music and loves highland cows.
Hobbies: Spending time with family and her 2 dogs
Hometown: Serena, IL
Favorite Sports Team: Chicago Blackhawks
HEATHER O.
Accounting & Billing
Heather has worked at First Impressions since July of 2013. Since then the staff has become like family. She looks forward to learning new things, and continues to improve her knowledge and skills. Heather enjoys the outdoors, especially with her family!
Favorite Sports Team: The Sandwich Indians
Hobbies: Reading
Hometown: Sandwich, IL
Favorite Charity: St. Jude
“I love my dental hygienist! She’s great! Dr. Lerohl is amazing, as always!”
“Professional crew from top to bottom. My personal health became their main goal. Thanks for being the best.”
“Always great service here! Dr. Landers and his team are always wonderful!”
Everyone is so friendly. They care about your overall health. Couldn’t ask for a better dentist’s office!”
“The office staff is always pleasant and very kind and helpful. It’s amazing how you can have such great people in one office, but not to mention how great the dentists are. I highly recommend this dental office to my family and friends.”
Please provide your information below to get in touch with us should you have any questions regarding our dental services or additional information that you may request.
OUR OFFICE
OFFICE HOURS
| Monday | 8:00 am – 7:00 pm |
| Tuesday | 8:00 am – 7:00 pm |
| Wednesday | 8:00 am – 6:00 pm |
| Thursday | 8:00 am – 5:00 pm |
| Friday | By Appointment Only |
| Saturday | Closed |
| Sunday | Closed |