4165 Blackhawk Plaza Circle Suite 100 & Suite 140 Danville, CA 94506(925) 736-7070
Walk-In Clinic Location
3424 Camino Tassajara Road Danville, CA 94506
(925) 309-2700

Phone Hours

We answer the phones in our main Danville location:

Mon-Thu 8:00 am - 4:30 pm
Fri 8:00 am - 4:00pm

Call us at (925) 736-7070

Primary Care Physicians

At Blackhawk Medical Group, we strive to be a blessing to our patients and our community. Over the course of more than twenty-five years, we have grown from a small office of two doctors and two employees to a thriving practice with five doctors and seven APP's (Advanced Practice Providers), supported by a team of skilled and dedicated employees.

Learn more about our providers by clicking their bios!


Our Doctors


John Roberts, MD
Family Medicine

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Jonathan Humphrey, MD
Family Medicine

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Denise O’Riordan, MD
Pediatrician

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Mark Reginato, MD
Internal Medicine

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Sheetal Shah, DO
Family Medicine

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Matthew Swartz, DO
Family Medicine

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Our Physician Assistants & Nurse Practitioners


Awisa Hodge, FNP-C

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Marcie Ryan, PA-C

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Susanne Goeb, PA-C

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Dan Heaney, PA-C

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Shawntel Reddy, FNP-C

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