Arroyo Grande Staff


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Santa Maria STAFF




Dr. Keith Ayrons grew up on Long Island, New York, and completed his bachelor’s degree in Biology at the University of Albany while volunteering at the local hospital in the Pathology department.  His passion for science and early learnings in the experimental and clinical based approach inspired him to complete first, a Master’s in Microbiology from Adelphi University and then his medical degree from Wayne State University.  He then completed his Internal Medicine residency, and combined fellowship in Oncology and Hematology at Stoney Brook University.


In 1995, Dr. Ayrons joined a growing oncology and hematology practice in Gastonia, North Carolina, where he was a partner for 23 years.  He is Board Certified in Medical Oncology, Hematology and Internal Medicine and served as past president of the Internal Medicine department.  For 25 years he developed excellent patient and family relationship skills that created a loyal patient following.

In 2018, Dr. Ayrons relocated to the Central Coast and is excited to be a part of the Mission Hope Cancer Center where he can continue to fulfill his passion of serving the community through providing quality care.



Dr. Keith Ayrons, MD





An experienced Medical Oncologist, Dr. Robert Dichmann has provided superior medical oncology services in the Santa Maria community since 1996. He is the founder of Central Coast Medical Oncology (CCMO), which is currently one of the largest and most respected hematology/oncology groups in the Northern Santa Barbara area. He also serves as Medical Director of Marian Cancer Program and chairs the weekly Tumor Board.


It was due to the vision of Dr. Dichmann for his patients’ needs that Mission Hope Cancer Center was built. He wanted to provide state-of-the-art, integrated oncology care under one roof to the people of the Central Coast to ease the burden of going through cancer treatment.


Dr. Dichmann earned a Bachelor of Science and Medical Degree at the University of Ottawa in Ottawa, Canada. He completed Fellowships in Medical Oncology, Hematology and Oncology and Bone Marrow and Stem Cell Transplants from the University of San Diego Medical Center. Dr. Dichmann is board certified in Internal Medicine and Oncology.


Mission Hope Cancer Center

1325 Church Street

Santa Maria, CA 93454

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