Main Office: 503.224.1371 | Hours: Mon-Fri 8:00 AM - 5:00 PM PST



Based in Portland, Oregon, Head and Neck Surgical Associates (HNSA) is the Northwest’s most highly specialized medical and surgical practice. With expertise in head and neck, oral, maxillofacial and facial cosmetic surgeries, HNSA is comprised of a unique group of board certified physicians that attended both medical and dental school.

Additionally, our doctors have completed training in oral and maxillofacial surgery or otolaryngology (ear, nose & throat), as well as relevant specialized fellowships, trainings, & certifications.

Leaders in their fields, our physicians are committed to the finest and most thorough care through diagnoses, surgical procedures, and patient care and management.


  • Dr. Eric J. Dierks
    Eric J. Dierks M.D., D.M.D., F.A.C.S., F.A.C.D, F.R.C.S.(Ed) A founding partner of HNSA, Dr. Dierks earned his medical and...
  • Dr. R. Bryan Bell
    R. Bryan Bell M.D., D.D.S, F.A.C.S. Dr. Bell is a fellowship-trained head and neck oncologic/oral and maxillofacial surgeon whose...
  • Dr. Allen Cheng
    Dr. Allen Cheng M.D., D.D.S., F.A.C.S Dr. Cheng earned his medical and dental degrees at the University of California,...
  • Dr. James P. Cuyler
    James P. Cuyler M.D., F.R.C.S.C. Dr. Cuyler was born and raised in Canada and earned his medical degree at...
  • Dr. R. Sterling Hodgson
    R. Sterling Hodgson M.D. Dr. Hodgson, a native Oregonian, and second-generation ear, nose & throat surgeon received his Bachelor's...
  • Dr. Ashish A. Patel
    Ashish A. Patel M.D., D.D.S., F.A.C.S. Dr. Patel earned his dental and medical degrees from New York University. Following...
  • Dr. Melissa S. Amundson
    Melissa S. Amundson D.D.S. F.A.C.S. Dr. Melissa Amundson received her dental degree at University of Illinois. She completed her residency...
  • Christina Fratangelo
    Christina Fratangelo C.R.N.P., D.N.P. Christina Fratangelo is an Acute Care Nurse Practitioner new to HNSA.  She graduated with a...


Our guiding principles are compassion, integrity, and leadership through excellence. Together, we seek to: provide the absolute highest level of patient care, advance the science of medicine and dentistry through research, extend the art of surgery to the next generation through teaching, create a resource for our communities, and cultivate a positive and stimulating environment for our staff. Please contact us today for a consultation—we look forward to creating a specialized program to fit your needs!


Head and Neck Surgical Associates was founded over 25 years ago on a private practice model by Dr. Dierks and partner. Built upon a union of unique partnerships, HNSA started off with the support and expertise of a University based hospital (OHSU) and community based trauma center (Trauma Services, LLP). We began with the exclusive contract for all head and neck injuries, and provided coverage for all subspecialties of dentistry, oral and maxillofacial surgery, otolaryngology, and plastic surgery. From the beginning, we’ve been dedicated to serving the community through both education and good medicine. Today, we continue our tradition of excellence with our group of compassionate, skilled doctors.

  • From Our Patients

    “We were very impressed with how thorough Dr. Cheng was at the consultation. He spent a substantial amount of time answering questions. The entire staff was awesome. On the day of surgery, the clinical staff did a wonderful job of making me feel less stressed about the procedure.”

    Jill C. ,
    Mother of Patient

  • From Our Patients

    "I was impressed by the professionalism of the caring staff; I felt they went above and beyond for me."

    Charlotte Galbraith,
    Oral Surgery Patient

  • From Our Patients

    "My experience with Head and Neck was awesome. While the procedure was one of the most difficult experiences of my life, the staff at Head and Neck were very accommodating. The outcome was as expected, no surprises, everything turned out great!"

    Timothy Webb,
    Dental Implant Patient