Kevin Kelleher, MD (cofounder); Mark Vasiliadis, MD (cofounder); and Ryan Bosch, MD, FACP, MBA Executive Healthcare Services, PLLC | Bethesda Magazine

Physician Profiles


Kevin Kelleher, MD (cofounder); Mark Vasiliadis, MD (cofounder); and Ryan Bosch, MD, FACP, MBA Executive Healthcare Services, PLLC

7811 Montrose Road, Suite 530

Potomac, MD

Additional location in Reston, VA


Honors and Awards
Top Doctor, Washingtonian, multiple years; 
Consumers’ Checkbook; Castle-Connelly Top Doctor, multiple years; Best Doctors in America, multiple years; Top Doctor, Northern Virginia Magazine, multiple years

“It’s about peace of mind” is often the feedback received from clients of EHS, new and old. As the leader among concierge medical practices, EHS provides 24/7 direct physician access and comprehensive healthcare concierge services, delivered with old-fashioned family medicine values.

Continually recognized in Washingtonian and by Castle-Connelly as “Top Doctors,” EHS remains the choice for discerning people who prioritize their health and seek a personalized relationship with their doctors—and for those whose hectic or travel-filled lives leave little time to schedule appointments or focus on health.

“We take a total care management approach centered on customization, convenience and total health assurance for every client,” says Dr. Mark Vasiliadis.

Because EHS limits its doctor-patient ratio, members enjoy the luxury of unparalleled access and ample time with their doctors, ensuring comprehensive and proactive focus on all their health and wellness needs. Strong relationships with top specialists ensure high-quality total healthcare. Appointments are based on your convenience, when and where needed. Follow-up support, provided by the dedicated, experienced concierge staff, is focused entirely on coordination of your care.

Key benefits for EHS include:

• 24/7 direct access to your exceptional EHS family physician

• Same-day appointments and consultation at your convenience

• Timely and coordinated access to top specialists, locally or nationally

• Concierge medical services to coordinate all your healthcare needs

Since 2004, EHS’s doctors have provided concierge care to Greater Washington’s leading executives, entrepreneurs and their families. Physicians and staff continuously train and refine their skills and processes to optimize the client experience and service.

“Our model was designed and improved based on years of feedback, always focusing on client needs whenever and wherever they are,” says Dr. Kevin Kelleher.

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