Our Dentists & Staff

Dr. Chris Peterson, DDS

The Peterson’s moved to Lander in 1972 when Chris was two years old. An opening for a dentist at the State Training School gave Dale, Chris’s father, the chance to fulfill his dream to live in the West. They grew up in Lander enjoying all the wonderful things Wyoming has to offer.

Chris graduated from Lander Valley High school in 1988, and went to the University of Wyoming to study biology. He earned his degree in 1993, and then attended Creighton University’s School of Dentistry until 1997. He moved with his family to Lander after graduating, where he began practicing general dentistry at Lander Dental Group.

Chris’s family consists of his wife, Pam, and two children. Ellis, who was born in 1997, and Zoe, born in 1999. They try to spend as much time as possible in the outdoors. It’s hard for them to pick a favorite area, whether it’s the mountains, Red Desert, or out on the lake. Chris is a board member of the One Shot Antelope Hunt Club in Lander, and is an active member in Wyoming’s Dental Association.

Missionary work is also a priority. Pam and Chris went to New Orleans to provide dental treatment following the Hurricane Katrina disaster, and he has worked with his father in Honduras on many occasions since high school.

Chris truly enjoys getting to know his patients, listening, and providing comprehensive, quality dental care.

Dr. Eric Sheridan, DDS

Dr. Sheridan has been practicing dentistry since 1996, and has been in private practice in Lander, WY since 1999. He received his doctorate degree from the University of Michigan, School of Dentistry, and immediately served his Country via the United States Air Force. Dr. Sheridan was fortunate enough to be picked as the NATO dentist serving in Zagreb, Croatia. He was the sole dentist, caring for 23 countries during the Balkan War, a time very formative in his passion for our Country and our immense blessings. He is an American Dental Association and Wyoming Dental Association member, and has represented the Northwest District Dental Society.

Dr. Sheridan is married to Shallary (not our assistant), and together they have 4 beautiful daughters. Their well-being is his primary passion. He loves the outdoors and all facets of experiencing this magnificent playground, which is why he moved here from Michigan.

Our Hygienists

Marie Roberts, RDH


Marie graduated from dental hygiene school at Laramie County Community College in Cheyenne in 2015. She started her career in dentistry in Dubois, Wyoming as a Certified Dental Assistant and Office Coordinator in 2000. She has a passion for helping people and was affiliated with Fremont County EMS as an EMT-I for many years, working the Lander, Riverton, and Dubois areas. A goal on her bucket list is to provide mission work in a third world country doing dental work. In Marie’s downtime she enjoys being at home with her daughter, Justyne and their 3 bird dogs.

Shaylynn Brasel, RDH

Shaylynn is a Lander Native. She graduated from the Dental Hygiene Program at Laramie County Community College in 2005. She has specialized in children’s dentistry since 2007 and has a love and passion for children’s dental health. Shay enjoys all outdoor activities and working out. Shay and her husband also own the local Crossfit Gym

Our Office Staff

Jody Erhart, CDA

Jody has worked for the Lander Dental Group since 1993. She worked as a chair side assistant for two years prior to that. She took the boards for her national certification at the University of Utah in January of 1999 and passed with flying colors. In 2013 she became our Office Manager but still enjoys all aspects of dentistry. She enjoys spending time outdoors and with her family.

Staci Wilkinson, CDA

Staci has been working with this practice since 2003 as a chair side assistant. In 2009 she achieved national certification in dental assisting. In her spare time she works at the local animal shelter and enjoys spending time in the mountains with her two kids. She has several pets of her own.

Shallary Guymon

Shallary joined our practice as a dental assistant in 2012 and has enjoyed learning about dentistry. She loves being outdoors and has a passion for competing horses. Shallary enjoys teaching horseback riding lessons and volunteers with 4-H.

Nicole Bishop


My name is Nicole. For the last six years I’ve been working in the dental field. My passion has always been to be in the dental office, working with the patients, and growing in the dental field. I plan on furthering my career by continuing to go back to school to become a licensed dental hygienist. When not working, I enjoy being outdoors with family and friends. I love to camp, hike, swim, read, cook, and do many more activities that this beautiful area has to offer. One of my absolute favorite things to do is going to my family cabin in Silvergate, MT and exploring Yellowstone National Park. I look forward to what the future hold and all of the knowledge I will gain along the way.

Raquel Pendergrass

Raquel joined the Lander Dental Group family the summer of 2012 as a receptionist. She enjoys working with the public and is proud to be part of a very compassionate caring team. Raquel enjoys decorating and sewing with her mom, as well as spending time with her son.

Judy A Phillips, CDA "Emeritus"

Judy began work at the Lander Dental Group in May of 1981 as a Certified Dental Assistant after completing the Dental Assisting program at Sheridan College. She began doing accounts payable, payroll and other bookkeeping duties as well in 1993. She retired from Dental Assisting in 1998. She has a passion for her accounting duties and still does this part-time for Lander Dental Group. She says she has been here so long that her co-workers and the Dr.’s are like family. When not working, her time is spent showing and riding her two quarter horses, and spending time with her other “4-legged kids” and her family.

Megan Whiteside

Megan graduated from Cottey College in 2002. She moved to Lander in 2006 from Kansas. Megan was a dental assistant before becoming a stay at home mom. Megan started at Lander Dental Group in April of 2016. She enjoys getting to know patients and being part of such a wonderful staff. Megan is married and has three girls. She loves being outdoors and traveling.