Meet the Doctors


Dr. Michael M. Neglia, DMD
Dr. Michael M. Neglia received his undergraduate degree in Art, with an emphasis in Ceramics and a minor in Chemistry, from La Sierra University in California. He obtained his Doctorate of Dental Medicine (DMD) from Tufts University School of Dental Medicine in Boston, Massachusetts, where he was awarded the prestigious Top in Class Clinical Dentist Award, in addition to awards for extensive dental volunteer work.
Dr. Neglia’s philosophy is to ensure premiere dental health and overall wellness. This is backed by his sound clinical experience, research, and teaching skills. He takes time to listen to his patients and keeps their best interests in mind, treating them as if they were family, and always giving his honest opinion.
Dr. Neglia’s expertise is in part due to his extensive dental research in the United States, Germany, and Australia. He believes in staying up-to-date on the latest technology and through continuing education, providing the best, comfortable and trustworthy dental care. Dr. Neglia will add an extensive amount of expertise to the practice in areas such as implant placement, endodontics (root canals), Invisalign, extractions including wisdom teeth, cosmetics (veneers, crowns, bonding), TMD (jaw issues), Botox and sleep appliances.
Dr. Neglia (aka Dr. Mike) grew up in Southern California, where he practiced for many years (most notably in Beverly Hills), before making his way to the Midwest. He is married to his wife, Nesa, and has a 2-year old son with a baby girl on the way. He enjoys golfing, ceramics, photography, sports, cars, exploring new areas, and spending time with his family.


Dr. Joseph T. Sullivan, DDS
Dr. Joe Sullivan received his bachelor’s degree from Loyola University, where he graduated with honors. He then attended The University of Illinois College of Dentistry where he received his Doctor of Dental Surgery (DDS) degree. At graduation, Dr. Sullivan was honored to receive the Ted Rosen Memorial Award for excellence in occlusal (bite) problem solving and treatment.
Dr. Sullivan has been in private practice for 32 years with the last 29 spent practicing in Sycamore. He has clocked hundreds of advanced dentistry continuing education hours throughout his career in order to stay on top of the latest in dental techniques and technology. He has also attended course work at the renowned Las Vegas Institute for Advanced Cosmetic Dentistry. Dr. Sullivan has designed and delivered hundreds of cosmetic dentistry cases, and his cases have been used in many training presentations to his peers in the dental field. Dr. Sullivan has also received extensive advanced training in the area of implants, and is certified in laser periodontal (gum) therapy.
Dr. Sullivan is a member of the American Dental Association, Illinois State Dental Society (former delegate), and Fox River Valley Dental Society (past President). Most importantly, Dr. Sullivan and his family cherish the relationships they have acquired throughout the years. He and his wife Linda raised their two children in Sycamore. They remain strong supporters of local schools and sports activities, church, and charities. During his free time Dr. Sullivan enjoys spending time with his friends and family, cycling and reading. He is also an avid fisherman.


Dr. Marisa E. Tolzin
Dr. Marisa Tolzin was raised in Sycamore and graduated from Sycamore High School. Dr. Tolzin completed her undergraduate studies at the University of Illinois, majoring in Molecular and Cellular Biology. She then earned her Doctor of Dental Surgery (DDS) degree from Marquette University School of Dentistry. Dr. Tolzin worked in the practice as an assistant during summers home from college. She has practiced with us since June 2018. Dr. Tolzin is a member of the American Dental Association, Illinois State Dental Society, Fox River Valley Dental Society, and the Chicago Dental Society. Dr. Tolzin has a special interest in restorative and implant supported dentistry, and she is particularly gifted treating children.
Sycamore holds a special place in Dr. Tolzin’s heart. She feels fortunate to work and live in the town she grew up in. She truly values the community and enjoys the special relationships in both our community and our practice, which her history has helped her to establish.
Outside of the office, Dr. Tolzin enjoys spending time with family and friends, staying active, trying new restaurants, traveling, and making gourmet cake ball desserts.

Contact Us
  • Joseph T. Sullivan, DDS
  • Michael Neglia, DMD
  • 645 Plaza Drive
  • Sycamore, IL 60178
  • Phone: (815) 895-2298
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