Drs. Engen, Hahn & Pizzini
Call: (509) 326-4445

Meet The Doctors

Dr. David W. Engen


Dr. David W. Engen, DDS, MSD is one of only FIVE board certified periodontists in the inland northwest. He received his Bachelor of Science degree in Neurobiology from Purdue University and his Master of Science degree in Physiology and Biophysics from Indiana University prior to earning his Doctor of Dental Surgery degree at Indiana University School of Dentistry. He received specialty training in both Periodontics and Orthodontics, making him one of a handful of specialists in the country to hold both specialties. He received the Master of Science in Dentistry degree along with his specialty credentials.

Dr. Engen has served as a clinical instructor in both the Department of Periodontics and Department of Orthodontics at Indiana University. Dr. Engen is an active member in the American Academy of Periodontology, American Association of Orthodontics, Washington State Society of Orthodontics, American Dental Association, Washington State Dental Association, the Spokane District Dental Society, and is the director of the Spokane Study Club. Dr. Engen is a co-founder of the Inland Northwest Dental Hygiene Study Club which holds the title for the largest dental hygiene study club in the nation. Dr. Engen has served in leadership positions including the Continuing Education committee, the Executive Council, Secretary-Treasurer, and President of the Spokane District Dental Society.

Dr. Engen is the husband to Michelle Engen since 1994, and is the proud father of Kaitlyn (1997), Daniel (2000), and Carolyn (2003). He likes to water ski, scuba dive, play games/sports with his kids and travel with his lovely wife.

Dr. Rudolf G. Hahn


Dr. Rudolf Hahn G. Hahn, DMD, MS is one of only FIVE board certified periodontists in the inland northwest, hails originally from London, England. Dr. Rudolf “Rolf” Hahn started his dental career at Guys Hospital, London in 1972. After graduating he worked in general dental practice in England and later in Germany. He also received his doctorate in prosthodontics at the University of Cologne, Germany, where he then also served as assistant professor of prosthodontics from 1980 to 1982. Dr. Hahn came to the U.S. to complete his specialty training in Periodontics at Loma Linda University in California. He stayed on as a faculty member in the school of dentistry in addition to his private practice. During the last five years of his stay at Loma Linda University, he served as Chairman of the Department of Periodontics. Dr. Hahn is a board certified in Periodontics making ours the only office in the Inland Northwest with two board certified Periodontists. Dr. Hahn has his Diplomate Status with the American Board of Periodontology. He also retains membership with the American Academy of Periodontology, the American Dental Association, Washington State Dental Association, Spokane District Dental Society, Academy of Osseointegration as well as the Spokane Study Club.

Dr. Hahn met his loving wife Tess in 1984 while backpacking in China. They chose to leave the hectic urban environment and found their home here in the Inland Northwest. They enjoy hiking and horseback riding in the forest, as well as fly fishing in the mountain creeks. Dr. Hahn’s other passions in life include restoring, sailing and racing vintage sail boats.

Dr. Andrea Pizzini

We are excited to have Dr. Andrea Pizzini join our practice!

Dr. Andrea Pizzini is one of six board certified periodontists in the Inland Northwest area. He was born and grew up in Desenzano del Garda, Italy. He received his dental degree from the University of Alfonso X el Sabio in Madrid, Spain. In recognition of his academic record and clinical skills, he was accepted to a postgraduate course in advanced implantology with the Spanish Society of Dental Implants (SEI). Following graduation, Dr. Pizzini practiced for two years as a general dentist in Italy. Dr. Pizzini came to the United States for the Post-Graduate Periodontics program at the University of Alabama at Birmingham (UAB) where he obtained his certificate in Periodontology and Master of Science (MS) in dentistry. 

Dr. Pizzini has done extensive research on sinus lift technique, guided bone regeneration and periodontal soft tissue grafting. He has lectured throughout the United States, Italy, Spain, Brazil and Dominican Republic. He is a visiting professor at the University Central del Este (Dominican Republic) and a professor at Coppel Dental Academy in Madrid (Spain). Dr. Pizzini is a fellow of the International Congress of Oral Implantologists (ICOI), member of the International Team for Implantology (ITI), member of the American Academy of Periodontology (AAP) and Academy of Osseo-integration (AO). He is a licensed dentist in the state of Washington, and the countries of Spain and Italy.

Ski racing has been his biggest passion since he was six years old. He raced throughout Europe, United States and New Zealand. He was the captain of the Alpine ski team at the University Alfonso X el Sabio and was the ski coach of the Amistad race team in Madrid. In 2019 he won the NASTAR national championship at Squaw Valley (CA) and became a member of the World Pro Ski Tour. He also enjoys fishing, biking and rock climbing.


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Office Location

  • Spokane
  • 9911 N. Nevada #110
  • Spokane, WA
  • 99218
  • Map & Directions
  • Call: (509) 326-4445