Wellington Dental
Jonathan R. Siefker DDS, Maryann Jacko DDS

Our Team

Wellington Dental

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 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. 

Meet Our Team

Tricia - Registered Dental Hygienist

 Tricia

Tricia attended the University of Akron and Lorain County Community College and has been with Wellington Dental for four 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 whenever time permits. She also enjoys attending sporting events and traveling.

Michelle - Registered Dental Hygienist

 Michelle

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

Amanda has been with our practice for three 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’ lives and dental health, no matter how small. 

In her free time, Amanda enjoys yoga, hanging out with her family, and spending time with their cat and two English Mastiffs.

Danielle - Expanded Functions Dental Assistant

 Danielle

Danielle is a graduate of Case Western School of Dental Medicine. She has been with us at Wellington Dental for two years, for a total of 12 years working in the dental field. As our Expanded Functions Dental Assistant, she is involved in many areas of our practice. Danielle loves helping people, and especially enjoys the art of creating beautiful smiles.

Danielle grew up in LaGrange, OH, and when time permits, Danielle enjoys riding her four-wheeler, hunting with her husband, cooking, and canning. Her hobbies include refinishing furniture, crafting, and painting

Brittany - Expanded Functions Dental Assistant

 Brittany

Brittany attended Case Western Reserve University and is one of our expanded functions dental assistants. This additional training allows her to perform a wide variety of treatments to help preserve and restore our patients’ dental health.

Brittany enjoys helping patients and has been with us for five years. She has worked in the dental field for a total of seven years. A native of Vermillion, OH, Brittany spends her free time playing with her dog and cat.

Gail - Scheduling Coordinator

 Gail

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.

Christy - Finance & Insurance Coordinator

 Christy

Christy has been working in the dental field for 18 years, with the past five spent at Wellington Dental. She enjoys the pleasant, friendly work environment and being surrounded by a supportive and talented group of co-workers. Christy is passionate about assisting our patients and helping them understand their financial needs and insurance options.

Christy grew up in North Ridgeville and loves being with her family when time permits. 

Amanda - Treatment Coordinator

 Amanda

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.