Meet Dr. Keilman

Dr. Mark Keilman was born and raised in The Dalles and pursued his career in dentistry after receiving a Bachelor of Science Degree at Oregon State University. He received his dental education at Creighton University. After graduating Dr. Mark joined his father Dr. Leo Keilman who had been practicing in The Dalles for 38 years. The Dalles was a perfect place to call home, raise a family and from that moment on Keilman Dental Clinic, PC was born.

When Dr. Mark Keilman is not at the office, he spends time in his yard landscaping, biking, hunting, camping and supporting his family in their extra curricular activities. Dr. Mark Keilman is committed to the community he calls home and is involved in Relay for Life, local schools sport programs, Riverside Gymnastic Club ,Knights of Columbus, Theatre Company of The Dalles--to name a few.

At Keilman Dental Clinic we are proud to offer senior citizens complimentary periodic exams, fluoride treatment, taxi service (for those without means of transportation) and blood pressure screening. Our team is committed to our patients and their dental health and goals.


  • 1986 -1988 - Mt Hood Community College, Assoc. of Science
  • 1998-1990 - Oregon State University, BS Industrial Safety
  • 1995-1999 - Creighton University School of Dentistry, Doctor of Dental Surgery

Professional Affiliations

  • American Dental Association
  • Oregon Dental Association
  • Academy of General Dentistry
  • American Society of Implant and Reconstructive Dentistry (ASIRD)

Meet the Team


Office Manager

Adam is one of our friendly patient coordinators. Adam is here setting our patients scheduling, reviews treatment plans with clients and taking care of the Accounts Payable. Adam has been a great addition to our team with his experience in other medical offices; our patients have had a welcomed and sincere response to seeing him here. What Adam loves most about his job is the personal connections made with patients. He also loves doing his part in the office that brings confidence back to patients through their smile. With his spare time Adam loves to sing and play the guitar. He plays tennis and volleyball. He enjoys sports, especially tennis and soccer, but most of all enjoys spending time with family and friends. He was born in California, but grew up in The Dalles. His family (parents and sister) all live in The Dalles. Adam is a proud father of 2 smart, fun, energetic, teenaged girls. Adam has been a great fit with our team since day one. We love the energy he brings to the office and support to other staff members.


Dental Hygienist

Addie is just one of our caring hygienists. She enjoys performing hygiene procedures and assisting patients with dental education and services.

Addie loves celebrating memorable occasions with her patients, as well as encouraging those facing trials. Addie's free time is spent with her husband, family, and friends.  She enjoys family celebrations, hiking, music, and serves in her local church. Addie was born and raised in the Mid-Columbia area.  She has worked as a hygienist for over 30 years and still loves her profession.

Addie is married with two grown daughters, both in the medical field, two great sons-in-law, and four amazing grandchildren.  We are so very fortunate to have her expertise and compassion in our office.


Dental Assistant

Brenna has been with the Clinic almost two years serving as a Dental Assistant.  Keilman Dental is very fortunate to have her as part of the staff assisting Dr. Mark, hygienist and anyone else who may need an extra helping hand.  One of the things that Brenna loves the most about working at the clinic is the staff.  As co-workers, we do our best to keep our spirits high by making each other laugh all day long.  "We are a silly, productive bunch!"  A happy working environment produces a caring staff.  When Brenna is not at the office she loves participating with anything that involves family, indoors or outdoors, it doesn't matter.  As long as her son, Wade is tagging along she is a happy mamma.  Brenna was raised on the coast of Washington in a small town called South Bend. Attended Grays Harbor Community College where she earned her AA degree.  Moving to the Gorge area in 2009 she attended Yakima Valley CC for her Dental Assisting training.  Recently married, they are expecting a second baby due in May of 2017.  Wade is ready to be a big brother, but until then he is the "'sparkle in her eye!".


Office Manager

Cathie has been working with the Keilman Dental Clinic on and off for many years.  Cathie earned her Dental Assistant, EFDA, Radiology, ICE, certification in 1987.  Cathie worked with Dr. Leo Keilman for a few years, and then took a break from assisting to be home for her older two children, and volunteer as an EMT for the Sherman County Ambulance.  2006 is when a change in life brought her back to The Dalles, where she was born and raised.  Dr. Mark and Cathie were married on November 23, 2007, where their family grew to a “Brady Bunch” of five kids.  When she is not busy with the above mentioned, she enjoys being creative in many aspects; sewing, crafting, restoring old furniture, restoring homes, landscaping, gardening is to mention just a few things.  The best part of my job is taking care of people.  I have a heart for helping others and giving them the best treatment possible when they walk through the door.


Patient Coordinator

Doris is one of our Patient Coordinators. She is there to greet our patients as they check into the office and ready to answer any questions given. Doris schedules our patients with the utmost care to detail and flexibility to work for our patients' busy lives. Doris also takes charge in keeping a personal contact with our patients by sending Birthday cards, sympathy cards, congratulations and any other type of correspondence needed to keep that personal touch with our clients. One of the best parts of her job is the feedback the front office will hear from our patients after seeing Dr. Keilman. Many times we have had patients just say, “You guys are awesome”. It makes all the work worthwhile knowing we are doing something right. On Doris’s free time, (which is none) she is her boys #1 fan with their sports activities. On occasion, you will find her hiking with her family in the beautiful Columbia Gorge. Born in Mexico, Doris was raised in The Dalles and has worked several different iconic places such as Neva’s Hallmark, Cup of Mud, Home Depot are just naming a few. Doris is a mother of 5 amazing boys. She is a very proud Mom and Keilman Dental is so fortunate to have her working with our staff and patients.


Dental Assistant

Krystal is one of our dental assistants (aka) “lil Ray”. Krystal earned her nickname by bringing her smile
and sense of humor into the office. The one thing that she loves about her job here at the clinic is
serving the patients in any way possible to make their experience a positive one. She loves it when she
can bring a smile to not just the patient’s face but her fellow co-workers too. Playing silly pranks may be
involved in bringing those good times, but hey, a girl has to do what a girl has to do. Krystal likes to
spend her past time with her family, hiking, fishing or out by the ole BBQ. Krystal was born and raised
here in The Dalles, graduated from The Dalles High School in 2000. Krystal started working for the clinic
in 2007, leaving for a few years, decided to come back to the best place to work for. Krystal is a hard
working mom with 4 children and 2 dogs. Keilman Dental is very proud to have her as part of the team.

Mary Jo


Mary Jo has been a hygienist for our office for over four years with more than 27 years of experience.  She provides clinical hygiene care and instructions on prevention of dental diseases.  Mary Jo's favorite thing about her job is making personal connections with her patients and working with a fun and friendly staff.  In her free time, she likes to spend time with family and friends going for walks, kayaking or paddle boarding and of course shopping.  Mary Jo was born and raised in The Dalles and the youngest of eleven children.  She is married to her husband Paul of sixteen years and blessed with one daughter who brings joy to her life.


Dental Hygienist

Patty has been working with the clinic since she was a Sophomore in High School.  Starting out with a janitorial position, Patty has worked her way up and around the office, making her irreplaceable.  Patty is now one of our three hygienists. She provides oral hygiene care, instruction, and enjoys visiting with patients regularly to see them maintain healthy smiles. She married her husband, Jeovany, prior to attending Mt. Hood Community College to become a dental hygienist. Patty was born in The Dalles and raised in Sherman County, but finishing her High School years at The Dalles High School. Patty enjoys spending her free time outdoors with her family and friends hiking, snowboarding, and exploring the Pacific Northwest.


Dental Assistant

​Rebekah has joined the Keilman Dental team as an assistant. She assist Dr. Keilman and goes out of her way to also help our hygienists whenever she can. She loves her co-workers and the friendly​ ​atmosphere in the office. Rebekah was born and raised in The Dalles and graduated The Dalles High School in 2016. When she’s not working she enjoys spending time with her family and friends and also tennis, hiking or just spending a day shopping. In her family, she is the youngest of five and has a fur baby (puppy dog) named Lilly.