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Welcome to Our Practice

Dermatologist Tigard, OR

Welcome! The dermatology professionals at Dermatology Associates are pleased to welcome you to our practice. We want all of our patients to be informed decision makers and fully understand any health issues you face. That’s why we’ve developed a web site loaded with valuable information about dermatology and dermatological problems and treatments.

Our web site also provides you with background about our physician(s), staff, office hours, financing policies, appointment procedures, maps, directions to our office in Tigard and other useful information. We know how hectic life can be and are committed to making our practice convenient and accessible. We want you to feel confident that when you choose Dermatology Associates, you’re working with doctors and other professionals who are qualified, experienced and caring.

Please take a few moments to look through this site to get a better feel for Dermatology Associates’s capabilities and services. We also invite you to email or call our Tigard office at any time to request an appointment or ask any questions. Thank you.


  • Scott A.B. Collins, M.D.

    Dr. Collins has been in practice in the Portland area since 1993 and with Dermatology Associates since 2000. Dr. Collins limits his practice to the treatment of advanced skin cancer. He is an expert in Mohs Micrographic Surgery and Cutaneous Oncology. 

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  • Eric Hester, M.D.

    Dr. Hester has three daughters who keep him busy most evenings and weekends with their variety of sports and extracurricular activities.  While not in the clinic, he enjoys backpacking, hiking, running, snowboarding, reading, and spending time in Central Oregon.  

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  • Gretchen Vanderbeek, M.D.

    Dr. Vanderbeek grew up in Aurora, Oregon, and spent her summers bossing around her younger brothers and swimming in the river. She grows roses and tomatoes with love and enthusiasm if not expertise. She does a lot of weeding but enjoys NOT weeding even more.  She lives in hope that someone will discover breakthrough medical developments in a hot cup of tea - black with milk and sugar, please.  She has two children who keep her very, very busy

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  • Andrew M. Lin, M.D.

    Dr. Lin is a native of Los Angeles, California. After many years in the Midwest and the East Coast, he is proud to call Oregon home. In his spare time, he enjoys hiking and exploring the PNW with his wife and their yorkie-mix Patrick. He is passionate about tennis, basketball, snowboarding, and rooting for his Michigan Wolverines (Go Blue!). While his family has been in the tea business in Taiwan for more than a century, he has recently taken up coffee brewing as a new hobby.

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  • Scott Maury, PA-C

    Scott has two young children that keep him on his toes most evenings and weekends with bike riding, art projects, sports, and general kid-friendly mayhem. 
    Scott enjoys cooking, eating, and traveling with his family.  He also enjoys playing golf, watching movies, MLB, and college football.  

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  • Amy Berry, ANP

    Amy enjoys spending her free time with her husband, two young boys, parents, and Stella (an energetic 100 lbs. Swiss Mountain dog). Her hobbies include arts-crafts, cooking, and cake baking.

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  • "Dr. Hester is the best. Been seeing him for years now, he very personable, easy to talk to and share my concerns with. He's the best."
    - Susan Gould | Facebook
  • "Love Dr. Hester here. He's very professional and thorough in his care. I've seen him for several years as well as other members of his staff. I've been very satisfied with all services I've received."
    - Beth H. | Yelp
  • "I’ve been a patient of Holly Rasmussen for over 15 years and I couldn’t ask for a better Dr. She is like a friend and the service is always on time and excellent care."
    - Nancy Lio Allsup | Facebook
  • "Went to dermatology associates to deal with skin complications from orthopedic surgery. Dr Vanderbeek was great and knew how to treat the problem were as other doctors could not diagnose it."
    - Todd G. | Yelp


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Our Regular Schedule


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-5:00 pm


7:30 am-4:30 pm





With mixed emotions, we announce that Holly Rasmussen, PA-C, will be moving to North Carolina at the end of 2020.  Holly has been a wonderful colleague here at Dermatology Associates for the past 18 years and she will be missed by patients and staff alike.  Holly and her husband are recent empty-nesters and this has prompted them to move to North Carolina to be closer to relatives.  We wish Holly the best in this new chapter in her life. 

We have recently expanded our clinical team here at DA in order to accommodate our patients who have established close relationships with Holly during her years here.  We look forward to seeing you soon. 

Take good care,

Dermatology Associates