Oncology & Hematology Meet Our Team

Dedicated Specialists Who Treat the Whole Person

At Lompoc Health – Hematology Oncology, we believe that exceptional care starts with exceptional providers. Our team of oncologists, hematologists and advanced practice clinicians brings decades of experience, deep clinical expertise and a shared commitment to compassionate, personalized care.

We understand that a cancer or blood disorder diagnosis affects more than just your physical health — it impacts your emotional, social and mental well-being. That’s why our providers take the time to listen to your concerns, answer your questions, and involve you in every step of your care plan. You’re not just a patient — you’re a partner in your healthcare journey.

We proudly serve the Lompoc Valley and surrounding communities, delivering high-quality care close to home so that you can focus on healing with your support system by your side.

Dr. Donna Walker

Medical Oncologist

Dr. Walker has cared for patients in the Lompoc and Santa Ynez valleys for more than 25 years and joined LVMC in 2015. She earned her medical degree from UCLA School of Medicine and also completed extensive specialty and subspecialty training at UCLA School of Medicine. She is known for her warm, patient-centered approach and deep clinical expertise.

Dr. Melani Shaum

Hematology, Oncology and Internal Medicine

Dr. Shaum brings nearly four decades of experience to Lompoc Health. She previously served on the faculty at City of Hope Cancer Center and was director of clinical hematology and oncology at Cedars-Sinai. She earned her degree from Northwestern University Medical School.

Paige Bradshaw-Terry, NP

Nurse Practitioner

With a background in emergency care, skilled nursing and public health, Paige supports patients throughout their treatment journey. She holds a Master of Science in Nursing from United States University and has been part of the Hematology-Oncology team since April 2024.