Cornerstone Primary Care logo
Concierge
Internal Medicine

Cornerstone Primary Care

Quick Facts

Membership Price RangeIndividual $300/month or $3,450/annually | Couple $575/month or $6,800/annually
Practice TypeConcierge
LocationWalnut Creek, East Bay, Contra Costa County
DoctorsRobert Hardy MD, Internal Medicine, Ross Pirkle MD, MS, Internal Medicine
Telehealth TypeTelemedicine video conferencing
Insurance AcceptedMedicare, PPO Plan
Telehealth AvailableYes

About

At Cornerstone Primary Care, two board-certified internists bring decades of clinical leadership to East Bay patients. Dr. Ross Pirkle and Dr. Robert Hardy share a philosophy centered on wellness, not illness. Together, they build customized health plans for each member. The practice serves patients from age 16 through 100-plus. Members receive same or next-day appointments for acute issues. The clinical scope spans preventive care, chronic disease management, sports medicine, arthritis care, and genetic screening. The doctors also offer joint injection therapy, pharmacogenomic testing, nutrition counseling, sleep studies, and pre- and post-surgical evaluation. When specialist care is needed, the doctors coordinate directly with affiliated physicians at John Muir, Stanford, UCSF, Mayo Clinic, and Cleveland Clinic. Members also gain access to a private portal with health articles, seminars, and video content.

Details

Address

120 La Casa Via, Suite 211, Walnut Creek, CA 94598

Membership

$300/monthly ($3,450/annual)

Membership Details

Individual plan: $300/month or $3,450/annually. Couple plan: $575/month or $6,800/annually. Flexible payment plans available: annually, semi-annually, or monthly. Discount offered for annual payment and for family members in the same household.

Telemedicine
Same-Day Appointments

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Frequently Asked Questions

Individual membership at Cornerstone Primary Care runs $300 per month or $3,450 annually. Couples pay $575 per month or $6,800 per year. The practice offers a discount for annual payment and for additional family members in the same household. Payment options include monthly, semi-annual, and annual plans.

Yes. The practice accepts insurance for covered medical services. The membership fee covers services that insurance does not typically reimburse, including physician consultations on health questions, health seminars, member portal content, and other enhanced services.

You can submit a new patient inquiry through the practice website. The membership team reviews each request and responds within approximately one to two weeks to let you know whether space is available.

Yes. The practice offers same or next-day appointments for acute health events such as illness, injury, or sudden symptoms that need prompt attention but do not require an emergency room visit.

Yes. The practice offers telemedicine appointments for members. This gives patients a convenient option for non-urgent concerns or follow-up conversations without an in-office visit.

The practice serves patients from age 16 through 100 and beyond. Both Dr. Pirkle and Dr. Hardy have experience caring for patients across a wide age range.

Yes. Members have after-hours phone access for non-life-threatening questions. The patient portal also allows direct communication, and the practice typically responds within one business day.

The doctors coordinate care with specialists affiliated with John Muir Hospital, Stanford, UCSF Medical Center, the Mayo Clinic, and the Cleveland Clinic. When a patient needs hospital care at John Muir Health's Walnut Creek Medical Center, the Cornerstone physicians make every effort to serve as attending physician during the stay.

The practice builds customized wellness plans covering sleep, weight loss, nutrition, and exercise. Members also have access to genetic screening, pharmacogenomic testing, and pre- and post-surgical evaluation. The focus at Cornerstone is on proactive health and disease prevention.

Yes. The practice provides joint injection therapy for arthritis and sports injuries. Sports medicine support helps active patients optimize conditioning, prevent injury, and recover more effectively.

Practice last updated June 11, 2026