Support Staff | Oncology Nurse Team | Mount Diablo Solano Oncology Group

From nurses to administrators, our support staff understands the challenges of treatment and seeks to provide you the best care available.

A team who puts you first


Beau DeFehr, Practice Administrator

Beau DeFehr, Practice Administrator

Beau D. DeFehr

Practice Administrator

Beau joined Mount Diablo Solano Oncology Group as Practice Administrator in January 2011. He brings 20 years of leadership experience to the health care industry, one third of which has been dedicated to Oncology Practice Management.

Beau believes in promoting a customer first environment in care and service and insists on standards that reflect providing the very best care available.

He is a member of Medical Group Management Association (MGMA), Association of Community Cancer Centers (ACCC), Association of Northern California Oncologist (ANCO) and the ION LPP Specialty Oncology Network Advisory Panel.  


Nancy Kuntsman, Nurse Manager

Nancy Kuntsman, Nurse Manager

Nancy Kuntsman RN, BSN, PHN, OCN

Nurse Manager

With the foundation of over two decades of experience, Nancy is an Oncology Certified Nurse whose greatest strength is teaching patients throughout their treatment process.  

“I firmly believe that to teach is to learn and to learn is to grow, and by helping out one patient, we can help many.”

Nancy has been part of the MDSOG team for over 18 years, ensuring a safe and healing environment for our patients. 

She is an active member of the American Nursing Society, Oncology Nursing Society, and Bay Area Oncology Nursing Society.


Concord Treatment Center

MDSOGroup- Concord Registered Nurses.

MDSOGroup- Concord Registered Nurses.

MDSOGroup - Concord Clinical Support Team. 

MDSOGroup - Concord Clinical Support Team. 

MDSOGroup - Patient Advocates, Financial Counselors and Administrative Staff.

MDSOGroup - Patient Advocates, Financial Counselors and Administrative Staff.


Vallejo Treatment Center

MDSOGroup- Vallejo Registered Nurses and Clinical Support Team.

MDSOGroup- Vallejo Registered Nurses and Clinical Support Team.

MDSOGroup- Vallejo Administrative Staff

MDSOGroup- Vallejo Administrative Staff


Call us to set up an appointment

(925) 674-2100 Concord 

(707) 551-3333 Vallejo 

mail@mdsogroup.com