Blackhawk Medical Group
Quick Facts
| Practice Type | Hybrid |
| Location | Danville, East Bay, Tri-Valley, Castro Valley, Livermore, Walnut Creek, Blackhawk |
| Doctors | Mallory Cless, Family Medicine, Jonathan Humphrey MD, Family Medicine, Nathalie Michaud, Family Medicine + 4 more |
| Year Founded | 1993 |
| Telehealth Type | Telehealth appointments |
| Insurance Accepted | Aetna, Anthem Blue Cross of CA, Anthem Blue Cross of CA Prudent Buyer Plan (all metals), Anthem PERS Platinum PPO, Anthem Blue Cross UC CARE (Tier 2), Blue Cross PPO, BCBS Blue Edge, Blue Shield of CA, Blue Shield UFCW Medicare PPO, Cigna/Evicore, Covered California - Blue Shield, First Health PPO, HealthNet PPO, Health Partners (Cigna other payer), John Muir HMO, JMPN Bright Healthcare, JMPN Brand New Day, JMPN Canopy (NO Medicare Advantage), JMPN Humana, Kaiser PPO, Medicare, Medigap, Meritain Health, Multiplan, Pacific Health Alliance, PHCS, Tricare, TriWest Healthcare Alliance (except Dr. Humphrey), UHC (except Dr. Humphrey), UHC Core, UMR PPO |
| Telehealth Available | Yes |
About
At Blackhawk Medical Group, seven physicians deliver family medicine, pediatrics, internal medicine, and concierge care to the East Bay community. Dr. John W. Roberts and Dr. Jonathan Humphrey co-founded the practice in December 1993. Since then, it has grown into a multi-specialty group serving Danville, CA for over 30 years. The practice operates as a division of BASS Medical Group and participates in the John Muir Health network. The team includes Dr. Mark Reginato in internal medicine and geriatrics, Dr. Sheetal Shah in family and lifestyle medicine, Dr. Denise O'Riordan in pediatrics and sports medicine, Dr. Mallory Cless in family and preventive medicine, and Dr. Nathalie Michaud in family medicine. Dr. Shah leads the concierge program, offering Basic and Lifestyle Concierge Care tiers. The practice runs a walk-in clinic seven days a week at a separate Danville location. Two offices, a broad clinical scope, and a long-standing East Bay presence make Blackhawk Medical Group a comprehensive primary care home.
Details
Address
4165 Blackhawk Plaza Circle, Suite 100, Danville, CA 94506
Phone
(925) 736-7070Website
Visit websiteMembership Details
Concierge care offered in two tiers: Basic Concierge Care (extended visits, same-day/next-day appointments, direct communication, in-office lab draws, limited panel) and Lifestyle Concierge Care (all Basic features plus expanded cancer screening, lifestyle tracking platform, collaborative approach to daily routines and long-term health patterns). Specific pricing not listed.
Our Doctors
Similar Practices Nearby
Eena Duggal, MD
Family Medicine, Functional Medicine, Preventive Medicine
Pamela Wang, MD
Internal Medicine, Functional Medicine, Preventive Medicine
Jatinder Marwaha, MD, FACP
Internal Medicine, Geriatric Medicine, Preventive Medicine
Explore More
Frequently Asked Questions
Blackhawk Medical Group provides family medicine, pediatrics, internal medicine, preventive care, women's health, men's health, geriatrics, lifestyle medicine, sports medicine, addiction medicine, concierge medicine, and executive health physicals. The practice also offers screening tests, immunizations, chronic disease management, mental health support, and STD testing. A walk-in clinic and telemedicine round out the available access points.
Yes, Dr. Sheetal Shah leads a concierge medicine program at the practice. Two tiers are available: Basic Concierge Care and Lifestyle Concierge Care. Basic includes extended visits, same-day or next-day appointments, direct communication, in-office lab draws, and a limited panel. The Lifestyle tier adds expanded cancer screening, a lifestyle tracking platform, and a collaborative approach to long-term health routines.
Prospective patients can submit a request through the concierge medicine interest form on the Blackhawk Medical Group website. Dr. Shah's team will follow up with details on membership tiers and current availability.
Yes, the walk-in clinic operates seven days a week at 3424 Camino Tassajara Road in the Tassajara Crossing Shopping Center in Danville. The clinic closes for lunch from 12 to 1 PM and remains closed on Easter, Thanksgiving, Christmas, and New Year's Day. Cash pay pricing starts at $125 for a basic office visit.
Yes, the walk-in clinic accepts cash pay patients. A basic office visit costs $125. Sports physicals run $135. Evening and holiday visits cost $150. No appointment is necessary to use the walk-in clinic.
The practice administers flu, tetanus, HPV (Gardasil), Hepatitis A and B, shingles (Shingrix), TB screening (PPD), and travel immunizations through the walk-in clinic. The main office also provides immunizations as part of regular primary care and pediatric visits.
Blackhawk Medical Group offers screening for STDs, hypertension, diabetes, cholesterol, thyroid conditions, anemia, cancer, autoimmune disease, and H. Pylori, among others. Pap tests and cardiac risk assessments are also available.
Yes, the practice accepts a wide range of insurance plans, including Aetna, Anthem Blue Cross of CA, Blue Shield of CA, Cigna, and Covered California, among others. The practice participates in the John Muir Health network. Contact the office to confirm your specific plan.
The practice's advanced practice providers, including nurse practitioners and physician assistants, are actively accepting new patients. For availability with specific physicians, contact the main office directly at (925) 736-7070.
com as its patient portal. Patients log in to review records, manage appointments, and communicate with their care team. Concierge members also have access to direct communication with Dr. Shah as part of their membership.
Practice last updated June 9, 2026