McMillen Dental Staff

All our professionals at McMillen Dental maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in dentistry.


Rhonda Steigerwald, DDS

Dr. Rhonda Steigerwald is originally from Leavittsburg, Ohio.  She attended Youngstown State University for her undergraduate studies and received her Doctor of Dental Surgery from The Ohio State University in 1996.  She worked in a private dental practice for 16 years in the Columbus and Canal Winchester areas. 

Dr. Steigerwald began her career in dentistry as a dental assistant.  She then became a dental hygienist.  After practicing for more than 10 years she enrolled in dental school.  Dr. Rhonda is an exceptionally intelligent, techically skilled, and compassionate Dentist.

Dr. Rhonda enjoys all aspects of general and cosmetic dentistry and she enjoys working with patients of all ages.  She is a member of the American Dental Association, the Ohio Dental Association, the Columbus Dental Society and the Central Ohio Study Club.

In her free time, Dr. Rhonda enjoys exercising, sailing, cooking, and spending time with her family.  She lives in Gahanna, Ohio, with her husband, Rick; her two children, Claire and Alyse; and their Golden Doodle, Rue.


Tiffany Allen, RDH

Tiffany has been in the dental field for 26 years. She is one of our dental hygenists. She completed her dental assistant training at JVS and went on to complete her dental hygiene degree at Shawnee State University, graduating in 1993. Tiffany began her career with McMillen Dental in 1998. Since employed with McMillen Dental she has completed course work at the Ohio State University learning to administer local anesthesia, She has attended classes in laser treatment and numerous continuing education courses. Tiffany and her husband Todd reside in St. Louisville with her two children Trey and Alison. During her spare time Tiffany enjoys camping and spending time outdoors with her family.

Susan Noll, RDH, BSDH

Susan is originally from Denver, Colorado.  She lives on a working family farm in Somerset, Ohio with her husband Bill, who is a retired Navy Pilot.  Susan tremendously enjoys her family of four children, gardening, working with her cattle on the farm and promoting quality dental hygiene in local schools of the Appalachian Region via a "dental bus".  Susan received her Bachelors of Science in Dental Hygiene from Old Dominion University in Norfolk, Virginia in 1995.  Susan has over 25 years of experience in the dental field, including her family dental practice in Denver.  Susan joined the McMillen Dental Family in 2016.  She enjoys the tremendous teamwork and caring attitude that Dr. Rhonda and her staff exudes.  Susan has been passionate at volunteering in schools, nursing homes and Veterans Hospitals in order to help promote quality dental care.

Autumn Zubovic, RDH

Autumn began her dental hygiene career after completing her degree from Shawnee State University in 1998.  She has worked in a general practice setting ever since becoming a full-time member of the McMillen Dental staff in 2018.  In 2012, Autumn completed course work at The Ohio State University to administer local anesthetic.  She attends several continuing education classes to stay up to date on current events in dentistry.  Autumn lives in Reynoldsburg with her husband, Jason, and their two sons, Hunter and Ryder.  She enjoys Ohio State football, Columbus Blue Jackets hockey, the outdoors and spending time with her family and pets.

Shannon Shelton, RDH

Shannon has been with McMillen Dental for 28 yrs. as one of  our dental  hygienists.  She  graduated  from  Shawnee State  University  in 1982.  She  began  as  a  full-time  hygienist  but  now works part-time.  Shannon  and  her husband, Tom, have three children. Zack is in college and has completed  the  "Colgate Country Showdown," and competed in American Idol.  Curtis and Hunter  are  home-schooled. Shannon's husband is a gospel  musician  who  books concerts in FL.  during  the winter months.  Shannon's family resides in the Naples area during this time.  Shannon enjoys OSU football, attending her kids' baseball games, and spending time with her family.

Dawn Jamison, EFDA

Dawn is from the Ashville area and has been in the dental field for over 30 years. She followed Dr. Rhonda to McMillen Dental after previously working with her for 13 years in the Columbus area. Dawn has two daughters, a step son and four grandchildren. Outside of work she enjoys spending most of her time outdoors with her family.  

Ashley Lamb, CDA, EFDA

Ashley has been in the dental profession for 13 years.  She began her career as a Dental Assistant then returned to school to earn her EFDA Certification.  Ashley graduated from the EFDA Program at Eastern Gateway Community College in 2010.  Ashley has one son.  She enjoys spending time with him, friends and family.

Lenzie Kelly, CODA

Lenzie is a 2008 graduate of Heath High School & CTEC graduating with honors, number one in her class, from the dental assistant program. Lenzie and her husband, Sean, currently reside in the Heath area. She has worked in the dental field since 2008 across central Ohio as well as upstate New York while her husband served on Active Duty in the Army. Lenzie has three beautiful little girls, including a set of twins!  Lenzie enjoys spending time with family, going to the beach, and watching football. GO BUCKS!!

Shereé Shaneyfelt, Office Manager

Shereé was born and raised in Heath graduating from Heath High School. Shereé & her fiancé, high school sweetheart, Ron have a young son together.  Outside of work Shereé enjoys spending time with her family, drag racing, and fishing.  In the racing world, she counts Larry Morgan as her favorite pro stock driver.  Shereé graduated from C-TEC and has been in the dental field since 2005.  She is a certified dental assistant and is licensed in X-ray and coronal polishing.  Since being employed at McMillen Dental, Shereé has taken on the role of Office Manager.

Stacey DeSanto, Treatment Coordinator

Stacey came to McMillen Dental from the Columbus Area following Dr. Rhonda Steigerwald to Newark. She has been working in the dental field since 1994. Stacey started her career as a Certified Dental Assistant.  Three years later she became treatment coordinator for Dr. Rhonda. Stacey married her husband, Gerry, in May of 2012 on Myrtle Beach, after being together for six years. Stacey has 2 daughters, Summer & Autumn, as well as 2 dogs Samson, a Yorkie, and Asher, a Schnauzer. Outside of work her family is most important to her.  Stacey loves to watch her girls play sports.

Cami Baker, Insurance Coordinator

Cami is a graduate of Tri-Valley High School.  She resides in the Newark area with her husband Doug and their two sons, Clay & Cruz. Cami also has a dog named Skittles, a Lhasa Apso, Jake, a Husky, and a cat named Flame. Cami is very proud of her son Clay, who graduated from Newark High School in the summer of 2014. On weekends you will find Cami watching her husband drag race; occasionally competing herself. If she is not drag racing, she is spending her time watching her son Cruz play football for the Newark Jr. Cats or playing basketball at the YMCA.


                                                       E. Julian Caldwell, DDS      
Doctor E. Julian Caldwell, the founding Dentist of McMillen Dental, passed away on May 27, 2015.  Doctor Caldwell was passionate about dentistry.  He loved helping his patients and their families. He was known for always allowing his pediatric patients to squirt water on their parents or siblings while in the dental chair. The McMillen Dental Team speaks of him frequently.  Our hearts are still saddened by his loss.  He is still greatly missed by Our Doctor, Her Staff and by the Patients of McMillen Dental.