About us

Dr. Maryann Jacko, Dr. Jonathan Siefker, and the entire team at Wellington Dental welcome you to our practice!

Our goal is to show you how excellent oral health can benefit your life and how we can help you achieve it. Dentistry is a challenge for many patients, but we aim to provide you and your family with such a pleasant and stress-free experience that you will never avoid dental visits again!

Our dedicated team members bring a wealth of knowledge and experience to their work, and they strive to put you at ease in our warm and soothing environment. Good oral health is essential, but you will find we are a cheerful group of professionals who make dental care a thing you want to do, not a thing you have to do.

We look forward to meeting you in person, but until then, please take a moment to get to know our fantastic team.

  • Dr. Maryann Jacko & Dr. Jonathan Siefker

    Dr. Maryann grew up in Parma, OH and attended Padua Franciscan Catholic High School. She is a graduate of Baldwin Wallace University in Berea, OH with degrees in chemistry and history. Dr. Maryann attended Ohio State University College of Dentistry, graduating in 2000.  

    Dr. Jon grew up on a farm outside a small town in northwest Ohio called Kalida, where he attended public school. He graduated from Vanderbilt University in Nashville, TN, then attended the Ohio State University College of Dentistry, also graduating in 2000.  

    Within three weeks of graduating dental school together, Dr. Maryann and Dr. Jon were married in Lakewood, OH. Dr. Maryann's earliest dental experiences took her into nursing homes where she provided dental care to the sick and elderly. Dr. Jon's earliest dental experiences were providing dental care via the Cleveland Veterans Administration Hospital.  

    Together, they came to Wellington in late 2002, assuming the practice built by Dr. Dane Adams. The doctors quickly outgrew their little facility on Dickson Street, leading them to build their current facility on Heritage Drive, where they have been caring for the patients of Wellington and surrounding areas for the past ten years. 

    During this time of building a growing, thriving practice, Dr. Maryann and Dr. Jon started their family and have three incredible children, Andrew (age 12), Jack (age 9), and Elizabeth (age 8). The family has been living in Medina for the past 13 years. They love the honest, hardworking people they have met over the years, and they enjoy learning new ways to enhance the dental health of their patients. Additionally, in 2010, Dr. Maryann and Dr. Jon took over the stewardship of yet another dental practice in Doylestown, OH, near Akron.  

    Family and friends are very important to Dr. Jon and Dr. Maryann. Most of their free time is consumed with their children's activities. They also love to travel, usually with their family. 

  • Dr. Leah Divito

    Dr. Leah received her undergraduate degree in biology from John Carroll University.  She earned her dental degree at the Ohio State University College of Dentistry and followed that by completing a residency program at Saint Elizabeth's Hospital in Youngstown, Ohio.  While there, she received further training in the areas of oral surgery, prosthodontics, and general dentistry.  Dr. Leah is a member of the Ohio Dental Association and the American Dental Association.  When not helping people perfect their smile, Dr. Leah loves to cook, bake, and try new restaurants.  As a newlywed, she enjoys traveling and spending time outdoors with her husband.

  • Tricia
    Registered Dental Hygienist

    Tricia attended the University of Akron and Lorain County Community College and has been with Wellington Dental for eight years.

    As one of our highly skilled hygienists, Tricia most enjoys meeting and getting to know our new patients. She finds it very rewarding to watch the happy reactions of her patients when they see the positive results after treatment is complete.

    Tricia is a native of Medina, OH, and she spends time with family. She also enjoys attending sporting events and traveling.

  • Michelle
    Registered Dental Hygienist

    Michelle attended Stark State College and has been with Wellington Dental for two years. She is happy to work in an office with such a great team environment and enjoys getting to know our patients.

    Michelle grew up in Norwalk, OH and enjoys traveling and spending time with her daughter.

  • Amanda
    Dental Hygienist

    Amanda has been with our practice for seven years. She graduated from Lorain County Community College with an associate's degree in applied science.

    As a native of Wellington Oh, Amanda loves seeing all her patients and working with the Wellington Dental team. Her goal is to make an impact on her patients.

    She enjoys spending time with family and all of her animals.

  • Gail
    Scheduling Coordinator

    Gail recently joined our team but has been working in the dental field for 20 years. She attended Louisiana State University College of Dentistry and enjoys her work because she likes meeting new people and helping them regain their confidence with a beautiful, healthy smile.

    A native of New Orleans, Gail spends her free time with her family and pets.

  • Amanda
    Treatment Coordinator

    Amanda attended Hocking College, where she received an associate's degree in applied business and office management. She then went on to attend Lorain County Joint Vocational School, where she studied dental assisting and radiography. Amanda has been with Wellington Dental for one year and enjoys working with patients to help them create a smile they can love and be proud of.

    Amanda is a native of New London, OH and spends her free time traveling and watching her son’s sporting events at Keystone schools. She also enjoys cheering on the Browns, Cavaliers, and Indians.

A Healthy smile is just a click away. Request an Appointment



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7:00 am-1:00 pm





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