Our Providers

The Providence Oral, Head and Neck Cancer Program is composed of a diverse team of medical and dental professionals who are dedicated to the care of patients with oral, head and neck tumors.  Since the oral cavity is the most prevalent site for cancer to occur in the head and neck, and the mouth and throat are often affected by treatment. Our program has a heavy emphasis on oral and oropharyngeal cancer. Thus, we draw on the expertise of both physicians and dentists to not just cure the patient of the cancer when possible, but to optimize their quality of life by normalizing the ability to speak, chew and swallow.
Accepting new patients

Stephen B. Bader M.D.

Radiation oncologist
Area of Expertise:

Radiation oncology; Benign and malignant tumors of the brain; breast cancer; gastrointestinal cancer; head and neck malignancies; lung cancer; prostate cancer

The Oregon Clinic-Radiation Oncology Division, Clackamas Radiation Oncology Center
9280 SE Sunnybrook Blvd.
Suite 100
Clackamas, OR 97015
Phone 503-513-3300
Fax 503-513-3310
The Oregon Clinic-Radiation Oncology Division, Providence Cancer Center
4805 NE Glisan St.
Garden Level
Portland, OR 97213
Phone 503-215-6029
Fax 503-215-6387
Accepting new patients

R. Bryan Bell M.D., DDS, FACS

Surgeon, medical director, Providence Oral, Head and Neck Cancer Program; head and neck oncologic surgeon/oral and maxillofacial surgeon
Area of Expertise:

Head and neck surgery; Oral and maxillofacial surgery

Head and Neck Surgical Associates
1849 NW Kearney St Ste 300
Portland, OR 97209
Phone 503-224-1371
Head and Neck Surgical Associates
1849 NW Kearney St.
Suite 300
Portland, OR 97209
Phone 503-224-1371
Providence Oral Head and Neck Cancer Clinic
4805 NE Glisan St.
Suite 6N50
Portland, OR 97213
Phone 503-215-3053
Fax 503-215-3037
Accepting new patients

Tuan G Bui M.D., DMD

Head and Neck Surgeon
Area of Expertise:

Oral and Maxillofacial Surgery; Head and Neck Oncologic and Reconstructive Surgery

Head and Neck Surgical Associates
1849 NW Kearney St.
Suite 300
Portland, OR 97209
Phone 503-224-1371
Providence Oral Head and Neck Cancer Clinic
4805 NE Glisan St.
Suite 6N50
Portland, OR 97213
Phone 503-215-3053
Fax 503-215-3037
Trauma Specialists - NW Kearney
1849 NW Kearney St Ste 100
Portland, OR 97209
Phone 503-915-6030
Accepting new patients

Marka R. Crittenden M.D., Ph.D.

Director, Translational Radiation Research
Area of Expertise:

Brain tumors; Breast cancer; Gastrointestinal cancer; Head and neck malignancies; Lung cancer; Lymphoma; Skin Cancer

The Oregon Clinic-Radiation Oncology Division, Providence Cancer Center
4805 NE Glisan St.
Garden Level
Portland, OR 97213
Phone 503-215-6029
Fax 503-215-6387
Accepting new patients

Eric J. Dierks M.D., D.M.D., FACS

Head and Neck Surgeon
Area of Expertise:

Oral and maxillofacial surgery; Otolaryngology, head and neck surgery

Head and Neck Surgical Associates
1849 NW Kearney St Ste 300
Portland, OR 97209
Phone 503-224-1371
Head and Neck Surgical Associates
1849 NW Kearney St.
Suite 300
Portland, OR 97209
Phone 503-224-1371
Accepting new patients

Steven K. Seung M.D., Ph.D.

Director, The Gamma Knife Center of Oregon
Area of Expertise:

Brain tumor, Head and Neck Cancer, Lung Cancer, Esophageal Cancer, Melanoma

The Oregon Clinic-Radiation Oncology Division, Providence Cancer Center
4805 NE Glisan St.
Garden Level
Portland, OR 97213
Phone 503-215-6029
Fax 503-215-6387
Accepting new patients

Matthew C. Solhjem M.D.

Radiation oncologist
Area of Expertise:

Brain tumors; Gastrointestinal cancer; Head and neck malignancies;Lung cancer; Prostate cancer; Gamma Knife stereotactic radiosurgery; Stereotactic body radiotherapy (SBRT)

Clackamas Radiation Oncology Center
9280 SE Sunnybrook Blvd.
Suite 100
Clackamas, OR 97015
Phone 503-513-3300
Providence Lung Cancer Clinic Eastside Portland
The Oregon Clinic-Radiation Oncology Division, Clackamas Radiation Oncology Center
9280 SE Sunnybrook Blvd.
Suite 100
Clackamas, OR 97015
Phone 503-513-3300
Fax 503-513-3310
The Oregon Clinic-Radiation Oncology Division, Providence Cancer Center
4805 NE Glisan St.
Garden Level
Portland, OR 97213
Phone 503-215-6029
Fax 503-215-6387
Accepting new patients

Edward Soo M.D.

Medical oncologist/Hematologist
Area of Expertise:

Lung cancer, head and neck cancer, lymphoma and leukemia

Compass Oncology - Gateway
1111 NE 99th Ave Ste 103
Portland, OR 97220
Phone 503-239-7767
Fax 503-215-6897
Compass Oncology-East, Portland
5050 NE Hoyt St.
Suite 256
Portland, OR 97213
Phone 503-239-7767
Fax 503-215-6897
Compass Oncology-Gateway, Portland
1111 NE 99th Ave.
Suite 103
Portland, OR 97220
Phone 503-239-7767
Providence Lung Cancer Clinic Eastside Portland
Accepting new patients

Amber Watters DDS, MPH

Dental oncologist
Area of Expertise:

Oncologic dentistry

Providence Oral, Head and Neck Cancer Clinic
4805 NE Glisan St.
Suite 6N50
Portland, OR 97213
Phone 503-215-3053
Fax 503-215-3037