Meet The Doctors

Dr's May Chang and Alexandra Dahm

Dr. May Chang

Excellence in dentistry begins with a careful co-diagnosis and treatment plan to establish the goals we will achieve together. Communication and long-term relationships are important to us. Let us know what is on your mind and ask questions. We will help you realize an investment in yourself pays dividends for a lifetime.  We are caring, skilled professionals, dedicated to simplifying what is often a very complicated and confusing area of health care. We want all our patients to be informed and knowledgeable about their dental health care, from treatment plans and services, to insurance coverage.

Dr. Chang is a female dentist who has been happily serving Portland's Hollywood District, inner east side neighborhoods since 1986.   Her emphasis is preventative care, education to allow personal responsibility of dental health and to restore the mouth with the best long term restorations and long term dental health. 

  • Graduate of the University of California San Francisco, School of Dentistry (UCSF), B.S., D.D.S. 1984
  • University of California Berkeley, 1977-1980
  • Mentor for the Academy of R.V. Tucker Study Clubs: OHSU Dental School Continuing Education Department
  • Active Continuing Education OHSU CE Department and Academy of General Dentistry


  • American Dental Association
  • Oregon Dental Association                                           
  • Multnomah County Dental Society  
  • Academy of Operative Dentistry                                   
  • Academy of R.V. Tucker Study Clubs
  • Columbia Periodontal Study Group
  • Oregon Gold Study Club
  • Hollywood Booster
  • Portland Public School PTA
  • American College of Dentists
  • International College of Dentist
  • Academy of General Dentistry

Recognition and Community Involvement:

  • Creston Children's Dental Clinic - Volunteer Dentist
  • Give Kids A Smile Program - Volunteer Dentist
  • Senior Smiles Dentist
  • Recognized as one of Portland's Top Dentists by Portland Monthly Magazine 2006, 2008, 2010, 2011, 2013, 2014,2015,2016,2017,2018,2019,2020,2021
  • Portland Public School PTA  Functions and Auction Committees
  • Fellow of the American College of Dentist and the International College of Dentist 2011
  • MOM (Mission of Mercy) Oregon 2013 
  • Project Helping Hands  Humanitarian medical/dental trip to The Dominican Republic 2013
  • Instructor-Tucker Gold Student Selective at OHSU
  • Second Councilor Academy of R.V. Tucker Study Clubs 

Dr. Alexandra Dahm

Dr. Alexandra Dahm grew up watching her father, also a dentist, care for his patients with compassion and skill. That seed sprouted a desire to pursue a career in dentistry, where she felt she could help people and combine her love for science and artistry. She strives to provide compassionate and tailored care to her patients in the least invasive way possible. She loves overcoming obstacles with patients whether it is fear, anxiety, or poor past experiences to help patients achieve the optimal oral health and the smile they desire.

Dr. Dahm was born and raised in Dayton, OH. She continued her education at Ohio State University earning a bachelor’s degree in Microbiology, then graduated from Ohio State’s College of Dentistry, Magna Cumme Laude. She considers herself a life-long learner, seeking out state-of-the-art continuing education in complex treatment planning, cosmetic dentistry and implant dentistry. She is also very excited to be joining Dr. Chang’s practice and learning from her 30+ years of experience. In her free time, she enjoys hiking, backpacking, and paddle boarding with her husband and their dog, Otter. She also loves to cook and has a passion for baking sourdough bread.