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Rock Valley Dental

1302 10th Street

Rock Valley, IA 51247 USA

712-476-2749

Meet The Team





Rock Valley Dental Team





MEET THE DENTAL ASSISTANTS

Our dental assisting team can answer any questions you might have ranging from simple appointments to technical dental treatment procedures. They will help you prepare for your visit, answer your questions about post-operative care and have even been known to hold a hand during dental treatment.


  • Sarah Johnson - Front Office, EFDA

    Sarah has enjoyed working in the dental field since high school and has been trained by many great dental professionals during her career. As a Registered Dental Assistant and Treatment Coordinator, she has had the opportunity to learn about different dental needs from many cultures worldwide. Rock Valley is her home along with her husband Jeff and their family. She is excited to be serving her community! 

  • Mary Kosters, RDA, EFDA

    Mary has been working in the dental field for the past 34 years. She enjoys all different aspects of her job, but especially interacting with our great patients every day. Mary and her husband, Dave, spend most of their spare time with family and friends. They have 3 married children and 9 grandchildren. They love warm weather activities; camping, motorcycle riding, bicycle riding, and just being outdoors. Mary tries to live a healthy and active lifestyle and is thankful everyday for all the blessings in her life.

  • Holli Dryfhout, RDA

    Holli has been working in the dental field for 37 years in Rock Valley.  She and her husband, Bill, live in Doon.  Holli considers herself blessed by getting to know many patients through the years.  Her goal each day is to treat each patient as family.  She enjoys biking, scrap-booking, and spending time with family.

  • Christian Sanchez, RDA, CDA, EFDA

    Christian graduated from Boyden-Hull in 2009 and earned her Certified Dental Assistant and Expanded Function Dental Assistant degrees from Western Iowa Tech in Sioux City in 2010. Christian performed her clinical rotation with Dr. Jespersen (now retired) and was excited to join the Rock Valley team officially in May of 2010. Christian and her husband, Joel, have four children Isaak, Julian, Julisa and Josue. She enjoys spending time with her family including her parents, siblings, aunts and uncles.






MEET OUR DENTAL HYGIENISTS

Our dental hygienists emphasize good home care of the teeth and gums and provide comfortable and thorough preventive and therapeutic dental treatment in a caring setting. We are proud of our hygiene team's committment to quality and the outstanding care they provide to all the patients in our practice.


  • Amy Ripperda, RDH

    Amy completed her Dental Hygiene Degree at the University of South Dakota. She started working with Dr. Jespersen shortly after graduating in 1990 and later in the same practice with Dr. Koth since July 2012. Amy lives on an acreage outside of Larchwood with her husband, Jay. They have one daughter, Tiffany, who is finishing her degree in accounting and business.  Amy and Jay enjoy spending time camping and fishing, mostly in Chamberlain, South Dakota. Amy thanks all of her patients for letting her assist them with their hygiene care for the past 28 years.

  • Deb Sackett, RDH

    Deb Sackett is a Registered Dental Hygienist (RDH). She received her RDH degree from St. Cloud School of Dental Hygiene Minnesota in 1999. After practicing in north-central Minnesota for five years, she moved south to Alcester, South Dakota. Deb has been working in Rock Valley ever since, and takes pride in working for  what she reports to be such a high quality dental office. She resides with her husband John, son Dillon, son Colton, and daughter Raelyn, on an active horse farm. Together their family operates their Quarter Horse boarding, training and riding facility. 

  • Kali Van Veldhuizen, RDH

    Kali was born and raised in Rock Valley. Kali graduated from the Rock Valley Community School in 2006 and obtained her Bachelors of Science degree in Dental Hygiene from the University of South Dakota in 2009. Kali started working for Dr. Jespersen in high school helping out wherever she was needed, and returned to the team as a dental hygienist after college. Kali enjoys practicing in her hometown and seeing familiar faces everyday. When Kali is not at the office she stays very busy with her growing family. She currently has four children, Trent, Kason, Brett, and Kenna. Kali enjoys being outdoors, playing volleyball, exercising, and spending time with family and friends.

  • Brittany Goslar, RDH

    Brittany joined our dental team in June of 2017. She was a graduate from DMACC Dental Assisting Program in 2014 and then went on to obtain her hygiene license from the DMACC Dental Hygiene Program in May 2017. She and her husband Tyler were recently married and they now reside in Rock Valley. They recently welcomed their son Bennett in August 2018. In her spare time Brittany likes to spend time with friends and family, go on walks with their dog Gracie, and enjoy many outdoor activities. She is excited to be a part of our community and get to know the patients at Rock Valley Dental. Brittany has been a great new asset to our dental team, and we are excited to see her career grow. 

  • Erika
    RDH

    Erika grew up near Rock Valley and currently resides on a farm near Ireton. She graduated from the Netherlands Reformed Christian School in 2013, then attended the University of South Dakota where she obtained her Bachelor of Science degree in dental hygiene in 2017. She recently joined the Rock Valley dental team, and she is very excited to be working in a close-knit community with a lot of familiar faces. Erika enjoys spending her spare time with her family and friends on the boat, at slow pitch softball, and traveling. 






OFFICE MANAGEMENT TEAM

Our Front Office Team greet you with a smile when you walk in the door! They can help you make appointments, answer questions about your dental treatment plan and assist you with financial arrangements.


  • Erica Harmsen

    Erica joined our team in March 2015. She enjoys working with all of Rock Valley Dental's patients and helping them with their scheduling needs. She is married to Nate, and they have three children, Colby, Caydence, and Kya. In her spare time she enjoys anything outdoors, especially bike rides and going for walks.

  • Taylor Bliek

    Taylor Bliek joined our team in September of 2018 and has been a familiar face to many and bright smile at our front desk ever since. Taylor returned to Rock Valley after spending a year practicing massage therapy in Des Moines. Taylor enjoys working and engaging with her hometown community. In her spare time, Taylor loves to spend time with her family and friends, traveling, and spending time outdoors. 

Contact Us Today

We look forward to hearing from you!

OUR LOCATION

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HOURS OF OPERATION

Find Out When We Are Open

Rock Valley Dental

Monday:

8:00 am-4:00 pm

Tuesday:

8:00 am-4:00 pm

Wednesday:

8:00 am-4:00 pm

Thursday:

8:00 am-4:00 pm

Friday:

Closed

Saturday:

Closed

Sunday:

Closed