Clinical Instructors
Daniel Fenn
DDS
Dr. Daniel Fenn graduated from the University of the Pacific Arthur A. Dugoni School of Dentistry in San Francisco, CA with a degree of Doctor of Dental Surgery (DDS). While work opportunities initially led him to practice in the Midwest, he knew he wanted to return to the Pacific Northwest – ideally in a small town. After a lengthy search for a suitable location, Dr. Fenn met Dr. A. James Harris, who had recently decided to retire and was looking for a like-minded dentist to take over his practice of 36 years. Dr. Fenn was very impressed with the focus on community, long-term relationships, and high-quality dentistry, and it didn’t take long before Wilbur Family Dentistry was born.
Before dental school, Dr. Fenn completed an undergraduate degree in Mathematics and was a National Merit Scholarship recipient. During dental school, he served as Class President while simultaneously completing a challenging accelerated program that allowed him to complete all of the requirements to graduate a full year earlier than most other dental students.
Dr. Fenn is dedicated to improving his skills via continuing education so he can stay up to date and offer his patients access to the latest technology, methods, and materials. He travels all over the country to learn techniques from top dental experts, and spends over 100 hours annually attending live continuing education events. He recently completed the requirements for Fellowship in the Academy of General Dentistry, which requires accumulating 500 hours of continuing education and passing a comprehensive exam covering all areas of general dental practice. This honor is attained by less than 6% of general dentists. Dr. Fenn has also focused on acquiring extensive training in placing and restoring dental implants and is excited to be able to offer this service to the local community.
He is a member of the American Dental Association, the Washington State Dental Association, the Spokane District Dental Society (where he currently volunteers as Treasurer and has served multiple years on the executive council), the Spokane Study Club (voted member of the year in 2019), and the Academy of General Dentistry.
Dr. Fenn recently completed an extensive office renovation, and is proud to offer our community a state-of-the-art facility and technology that rivals that found in any “big city” office. He is passionate about dentistry and is proud to be a part of the Wilbur community. Building relationships with patients, many of whom have become friends, is a highlight of each day. Dr. Fenn’s goal during every visit is to help people move toward a more full embodiment of health. He believes each patient interaction is an opportunity to improve someone’s life, whether through a necessary dental procedure, oral health education, or simply a pleasant conversation.
Timothy A. Hess
DDS, MAGD, LLSR, FACD, FICD, FPFA
Dr. Timothy A. Hess is a graduate of the University of Alberta and earned his DDS degree from the University of Washington in 1994. He is an Affiliate Assistant Professor Restorative Dentistry, Affiliate Assistant Professor Oral Medicine, and the former Director of the Tucker Institute at the University of Washington School of Dentistry. Dr. Hess is known for his expertise in the topic of implant failures due to restorative techniques, operative dentistry, zirconia restorations, and facial aesthetics, including the use of Botulinum toxin and dermal fillers.
In addition to his academic role, Dr. Hess maintains a private restorative practice in Auburn, WA. Much of his practice focuses on advanced prosthetic procedures including implant support complete dentures. He is an accomplished author, with publications in respected journals such as The Journal of Prosthetic Dentistry, International Journal of Oral Maxillofacial Implants, International Journal of Prosthodontics, Canadian Journal of Restorative Dentistry and Prosthodontics, Decisions in Dentistry, and Operative Dentistry.
Dr. Hess is an active lecturer, having presented at numerous prestigious events, including the ADA Annual Meeting, the AGD Annual Meeting, the Pacific Northwest Dental Conference, Canadian Academy of Restorative Dentistry and Prosthodontics, Operative Academy, the American Academy of Restorative Dentistry, and the International Academy of Gnathology. He is also a Past-President of the Seattle-King County Dental Society and a Fellow of the International College of Dentists, American College of Dentists, and the Pierre Fauchard Academy. He has received the Lifelong Service Recognition from the Academy of General Dentistry three times.
Outside of his professional life, Dr. Hess enjoys time with his wife, Lisa, and their six nieces and nephews. When not lecturing or teaching, Dr. Hess enjoys photography, traveling, and attending junior hockey games. His favorite films are Raiders of the Lost Ark and Star Wars, and his favorite book is Great Expectations. Passionate about his work, Dr. Hess is committed to educating others and advancing the field of dentistry.
LeRoy Horton
DDS, MS, DICOI
LeRoy Horton, DDS, MS, DICOI is the Director of the Periodontal and Implant Curriculum at Pacific Northwest University (PNWU). Originally from Athens, Greece, Dr. Horton moved to the United States as a teenager and settled in the Tacoma, WA area. He earned a bachelor’s degree in biology from Pacific Lutheran University before attending the University of Washington School of Dentistry, where he graduated in 2007.
After 14 years as a private practice owner, Dr. Horton sold his practice and pursued specialty training in periodontics at Oregon Health Sciences University, where he also obtained a master’s degree in Periodontal Science.
Dr. Horton is board certified in Periodontics and Dental Implant Surgery as a Diplomate of the American Academy of Periodontology and also earned his Diplomate in the International Congress of Oral Implantology (DICOI). He maintains a busy lecturing schedule nationwide. He currently serves as the Chair of the Scientific Committee for the National Dental Association and is an active leader in his local dental community, having previously served as Treasurer and currently as President of the Seattle King County Dental Society.
A passionate educator, Dr. Horton believes that excellence in any field stems from a deep love for it, and he is truly dedicated to teaching.
He is a strong believer that to be great at something you must love it, and he absolutely loves teaching.
Dr. LeRoy Horton DDS, MS, DICOI
Dual Board Certified Specialist in Periodontics and Dental Implant Surgery
Associate Professor & Director of Periodontics
PNWU School of Dental Medicine
Tim Hung
DDS
Dr. Tim Hung is a general dentist who works in private practice in Woodinville, Washington. He completed his general practice residency training at the University of Washington after obtaining his DDS degree from the University of Michigan. During his training, Dr. Hung provided both routine and advanced dental care to medically complex patients of all ages.
Dr. Hung loves the variety and challenges dentistry brings. He believes in life-long learning and completes over 100 units of continuing education each year on average. With every additional training, Dr. Hung hopes to elevate and improve his patients’ oral health and their overall quality of life.
In his spare time, Dr. Hung enjoys taking photography, exploring new places, and spending quality time with his family, friends, and his adopted Michigan domestic short-hair cat Mochi. Dr. Hung is a member of Academy of General Dentistry, American Dental Association, Washington State Dental Association, and Seattle-King County Dental Society.
Jason Perlman
DDS
Personal & Educational Background
Dr. Jason Perlman grew up in Youngstown, Ohio, before attending Arizona State University, where he received a Bachelor’s degree in Business Management. Following a brief time working with the city of Phoenix’s small business relations team, he traveled back to his home state to attend the Ohio State University College of Dentistry. He then trained at an general practice residency program at Akron City Hospital’s Center for Dental Health, where he received awards for excellence in restorative, periodontal, and endodontic therapy.
Treatment Philosophy
Dr. Perlman’s goal is to educate his patients by demonstrating how their oral health relates to overall body wellness. In doing so, he hopes to enable his patients to take control of their health. He works closely with other healthcare professionals to ensure his patients receive high-quality, comprehensive interdisciplinary care.
Dr. Perlman views dentistry as an art he gets to practice daily. He uses his extensive educational and training background with the latest technology to bridge art and science together. He believes in building personal and professional relationships while dissipating dental phobias through trust, caring sensitivity, warmth, and sincerity. By helping improve the oral health in the community, he hopes to improve people’s overall quality of life, starting with a comfortable, healthy, and aesthetic smile.
Continuing Education
Dr. Perlman loves dentistry and has continuously pursued education after receiving his doctorate degree. In particular, he trains at the L.D. Pankey Institute and at Spear Education, which are both recognized worldwide for excellence in advanced technical dentistry. He is also a member of iPankey, a Seattle/Tacoma study club and is in training to become part of the faculty at the Pankey Institute, which focuses on treating patients with complex dental needs, including TMJ Disorder and obstructive sleep apnea. Dr. Perlman has complete mastery training in dental sleep medicine and is a Diplomate of the American Board of Dental Sleep Medicine.
Personal Life
Outside of dentistry, Dr. Perlman loves spending time with his wife, Karyn, with whom he shares a love for the outdoors. Together, they spend their free time on weekend hiking and backpacking trips, particularly enjoying when their dogs Moe, Mickey and Mochi are able to join. He is also an avid bicyclist, and for the past ten years, he has participated in Pelotonia, a grassroots bike tour that raises money for cancer research.
Tokiko Poppe
DDS
Dr. Tokiko Poppe considers herself extremelv fortunate to work in dentistry because she gets to witness and participate in the lives of her patients. She believes earl intervention and knowledge can prevent many problems later in life. The human body is one unit, and everything in people’s mouths is linked to their overall health.
Dr. Poppe graduated from the University of the Pacific’s Arthur Dugoni School of Dentistry in San Francisco. She holds a Japanese dental license as well. She is eager to expand her knowledge by enrolling in numerous continuing education courses and actively participating in several local and national study groups.
She was involved in craniofacial research in school. where she studied cleft lip and palate extensively. Dr. Poppe also completed a General Practice Residencv in California, where she cared for medicall compromised adults at Veterans Hospital and children under general anesthesia at University Medical Center. She enjoys being involved in the community to share her knowledge with society and is a member of the ADA, AAGO, AAPMD, WSDA, SKCD, AGD, American Laser Study, TBI Ambassadors, and AMR advanced program.
Dr. Poppe gains energy from her interactions with the Cosmos Dentistry team and her patients. She spends her free time with her family and friends, reading, being outside in nature, and practicing Yoga and Pilates. They have a Balinese cat named Gumi and a Golden doodle named Winnie, both of which bring her great joy and happiness.
Christopher Shyue
DDS
Dr. Christopher Shyue completed his training at the University of Washington School of Dentistry (UWSoD). While in school, he received introductory implantology training and developed his surgical skills through surgical periodontics and advanced oral surgery courses, as well as two externships and many service learning trips. Under the guidance of Dr. Layla Yassin, he placed his first dental implant as a fourth year student. After dental school, he worked as a general dentist at Columbia Valley Community Health in Wenatchee before joining his wife, Dr. Christine Wu, in their practice in Snoqualmie.
With Dr. Alan Yassin’s Clinical Implantology from A to Z course, Dr. Shyue underwent intensive learning about dental implantology and retraining of his surgical skills, with special emphasis on proper treatment planning, improved surgical techniques, and soft tissue management. Dr. Shyue is proud to be a graduate of Washington AGD’s Clinical Implantology from A to Z course, and believes that he has become a better clinician under Dr. Alan Yassin’s rigorous training. Dr. Shyue has completed over 400 CE hours about dental implants, including Implant Seminar’s Virtual Continuum.
Dr. Christopher Shyue is actively involved in the local dental community. He is a member of Seattle-King County Dental Society’s Executive Council, an Affiliate Faculty at the UWSoD, an Associate Faculty at Shoreline Community College Dental Hygiene Program, and a Contract Dentist with the Washington State Department of Children, Youth & Families.
John Walker
DDS
With three decades of experience practicing cosmetic dentistry and general dentistry, John Walker, DDS, is regarded as one of Olympia’s premier dentists. An early practitioner of innovative cosmetic and general dental procedures, Dr. Walker has continued to expand his expertise with many days of continuing education classes each year and ongoing investments in new technology.
Dr. Walker is a member of several national and local associations, including the American Dental Association, Washington State Dental Association, and the Thurston-Mason Counties Dental Society. His involvement with the American Academy of Cosmetic Dentistry and the Academy of Computerized Dentistry ensures he maintains strong technical proficiency.
Dr. Walker is a member of the advisory board for South Puget Sound Community College Dental Assisting Program, where he has taught part-time. He is active in various Thurston County health communities, including Children’s Dental Health Coalition, the Campaign to Fluoridate Thurston County, the Community School Sealant Program, and the ABCD Task Force to improve access to care for low income children and families.
Born and raised in Tacoma, Dr. John Walker attended the University of Washington, earning both an undergraduate degree in Zoology and his doctorate degree in Dentistry. He lives in Olympia and is the proud father of daughter Lauren and two sons, Evan and Cole. He enjoys many outdoor activities including biking, hiking, camping, snow and water skiing, and on and off-road motorcycling.
Christine Wu
DDS
Dr. Christine Wu has a special passion for dental implantology. While at the University of Washington School of Dentistry, she pursued various opportunities to further her implant-related knowledge and training. After dental school, Dr. Wu went through a comprehensive dental implant training through Washington Academy of General Dentistry’s Clinical Implantology A-Z Program.
Dr. Wu is an Affiliate Faculty at University of Washington School of Dentistry’s Department of Oral Medicine. She is a Member of Seattle-King County Dental Society’s New Dentists Committee.
Dr. Wu is a double husky. She received a Bachelor of Science in Medical Technology and completed her dental degree at the University of Washington. She worked in a private practice in North Seattle and then later transitioned into her own practice in Snoqualmie, WA, with her husband, Dr. Christopher Shyue.
