Our Ames Dentists

Dr. Greg Hawthorne

Dr. Hawthorne grew up in Marion, Iowa. He earned his B.A. in Biology and Chemistry while playing football at the University of Northern Iowa. He completed his D.D.S. Degree from the University of Iowa in 2001 and began practicing in Ames, IA.

Dr. Hawthorne is married to his wife, Amy, and they have three children; Drew, Ava and Will. He enjoys time with his family, coaching youth sports and playing golf and basketball.

Dr. Hawthorne enjoys his work.

Dr. Adam Halbur

Dr. Halbur grew up in Ames, Iowa. He earned his B.S. in Biological Systems Engineering at Iowa State University. He earned his D.D.S. Degree from the University of Iowa in 2016.

Dr. Halbur is married to his wife, Kaysha. They have a son, Ethan and a daughter Anna. He enjoys spending time at the lake with his family, bicycling, and hunting.

Dr. Halbur enjoys working with all ages of patients.

Our Team

Jill Otto

Registered Dental Assistant & Receptionist

Jill has worked as a dental assistant with us since 1984.

Jill and her husband Todd, grew up in Nevada, Iowa where they still live. They have two boys; Taylor and Braydon. She enjoys spending time with her family and friends, and staying active with outdoor activities.

Monica Mehl

Registered Dental Assistant

Monica graduated from the Dental Assisting Program at Des Moines Community College in 2016. She grew up in Story City. Monica started working with the team at Main Street Dental right after her graduation in August of 2016.

She enjoys playing volleyball, spending time outside, relaxing with family and friends and SMILING ūüôā

Shelby Markley

Registered Dental Assistant & Receptionist
Shelby grew up in the Gilbert area. She graduated from the dental assisting program at Des Moines Community College in 2014. Shelby joined the Main Street Dental team in July of 2022. She splits her time working as a receptionist and working as an assistant.
Shelby and her fiance Trevor enjoy watching ISU football, spending time with family and friends, but most importantly, spending time with Shelby’s chocolate lab, Drake.

Kristy Kopaska

Dental Hygienist

Kristy has been with Main Street Dental since April of 2017. She started her career in dentistry as an assistant in 2000 and graduated the DMACC dental hygiene program in 2007.

She and her husband Jeff have 3 girls; Alexa, Cassie and Brianna.

Mari Johnson

Dental Hygienist

Mari Johnson is a Dental Hygienist with the Main Street Dental team. She started with this illustrious group in February 1993. Mari grew up in Ames as did her husband, Jeff. They are proud graduates of Ames High School. Mari graduated from the DMACC Dental Hygiene Program.

Mari and Jeff have 3 children: Holly, Jaclyn and Ethan.

They are big fans of ISU football and men’s and women’s basketball.

Rachael Kobliska

Dental Hygienist

Rachael grew up in Oskaloosa, Iowa. She attended UNI her first year of college. She completed the Hawkeye Community College Dental Hygiene program in May of 2006. She has been employed with Main Street Dental since November 2006.

Rachael is married to her high school sweetheart, Jon, and they have a son named Mason. She enjoys being outdoors, watching movies and spending time with her family.

Rachael enjoys her profession and finds it rewarding to contribute to healthy smiles.

Lisa Dellachiesa

Office Manager

Lisa started working here in 1994. She earned her certificate in the Administrative Assistant Program from Iowa Central Community College in Fort Dodge.

Lisa has two boys; Zack & Tye. She enjoys spending time with family and friends.

Lynne Wilkinson

Lynne started with the Main Street Dental team as a receptionist in 2017. She graduated from the DMACC Dental Hygiene program in 1981 and worked as a dental hygienist for many years. She is married to her husband, Kim, and has 2 children, Kory and Kacie, and 6 grandchildren. She enjoys traveling and spending time with family.