Oregon Oncology Specialists

Hematology-Oncology • McMinnville, OR

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About

McMinnville location for Oregon Oncology Specialists (part of Oregon Specialty Group) - Oregon Oncology Specialists is a physician-owned specialty practice under Oregon Specialty Group, serving the Willamette Valley with multiple practices. - The McMinnville office is one of OSAs locations, alongside Salem and other nearby offices. - OS G focuses on oncology, rheumatology, infectious disease, and specialty infusions, with a network of private practice physicians and about 40+ years of operation.

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Clinic Type

Hematology-Oncology

Address

2700 SE Stratus Avenue, Suite A, McMinnville, OR 97128

Phone

503-435-6590

Email

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Opening Hours

Provider hours: 8:00 a.m. – Noon, and 1:00 p.m. – 4:30 p.m.; Monday through Friday

Website

https://oregononcologyspecialists.com/locations/mcminnville/

Emergency Care

After hours, during lunchtime, calls directed to answering service; provider on call 24/7

Services Offered

Hematology
Oncology
Chemotherapy
Immunotherapy
Targeted Therapy
Hormone Therapy
Genetic Testing
Personalized Medicine
Medication Dispensing
Clinical Trials
Medical Appointments
Palliative Care
Radiation Oncology

Team

Catherine O'Brien — MD
Nicholas Barber, MD — MD

Insurance & Payment

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Languages Spoken

English

FAQs

What are the hours for patient care and treatment?

Provider hours: 8:00 a.m. – Noon, and 1:00 p.m. – 4:30 p.m.; Monday through Friday. Treatment hours: 8:00 a.m. – 4:30 p.m.; Monday through Friday.

What is the after-hours phone number?

After hours phone: 503-561-6444.

Where is the McMinnville location located?

2700 SE Stratus Avenue: Suite A McMinnville, OR 97128.

Who are the providers at this location?

Catherine O'Brien, MD; Jeffery D. Schwab, FNP; Melissa Walsh, PA-C; Nicholas Barber, MD; Sadie Blackhall, PA-C.

What resources are available for patients at this location?

Patient Portal; Information on Common Cancer Treatments; FAQs; Your First Visit; Insurance & Financial Policy; Managing Side Effects; Survivorship; Advance Care Planning; Cancer Diagnosis Resources; Community Resources; Clinical Trials; Palliative Care; Cancer Nurse Navigators; Social Workers; Support for Your Cancer Journey; Nutritional Counseling.

Photos

What Patients Say

Overall sentiment across review platforms: very positive

Birdeye (Google): 5.0/5.0 stars (4 reviews)
WebMD Care: 5.0/5.0 stars (7 ratings)
Yelp: 5.0/5.0 stars (1 review)

Patients praise

compassionate and helpful staff
intelligent and caring doctors
welcoming environment
clear communication and thorough explanations
patient-centered focus

Common complaints

no major complaints reported

"Dr. O'Brien and the entire staff at the Willamette Valley Cancer Center are the nicest people on the planet. ... She takes the time to really connect and communicate with my Mom who is hard of hearing and has difficulty communicating at times."

— Birdeye review

"My doctor is intelligent, calm and caring. I'm blessed to have her as my M.D. and the medical assistant is friendly and caring."

— Oregon Oncology Specialists website testimonial

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

In the News

Oregon Oncology Specialists Sponsors Strike Out Cancer Night with the Marion Berries - Oregon Specialty Group — Jul 30, 2025
Oregon Specialty Group Data Breach - Investigated by Federman & Sherwood — Jul 24, 2025
Offering Breast Cancer Care in Albany, Corvallis, and Newport, Oregon – Oregon Surgical Wellness — Feb 24, 2026

Information sourced from the clinic's website as of July 11, 2026. Own this clinic? Claim or correct this listing.