About EHS Corporate Care

EHS Corporate Care, P.L.L.C. targets corporations that understand the importance of investing in their most critical asset – their key employees. It provides busy executives the synergy of an exceptional Executive Physical with the even more important, year-round personalized care and follow-up necessary for optimization of the employee's health.

Unlike other Executive Physical programs that simply provide a snap-shot of an individual’s health on that particular day with no ongoing follow-up, EHS Corporate Care partners with clients '24/7/365' to provide follow-up on findings discovered during their Executive Physicals, to implement preventive care initiatives, and to provide year-round healthcare concierge services. In addition to better healthcare, the program will result in improved employee productivity, company goodwill, and a positive return on investment.

Our Providers:

John P. Mamana, MD
Dr. John P. Mamana is a pioneer in primary care. He is an exceptional Board Certified Internist who is a graduate of Harvard University, the Boston University School of Medicine and the University of Pennsylvania Hospitals, where he completed his residency in Internal Medicine. He has been Clinical Associate Professor of Medicine at Georgetown University Medical Center, Chief of Internal Medicine for seventeen years at Inova Fairfax Hospital and a former Chief of the Fairfax Hospital Medical Staff. In addition to his of experience in corporate healthcare, Dr. Mamana lectures internationally on nutrition and herbal medicine. For more information, see Dr. Mamana's Curriculum Vitae.

Dr. Mamana has been an active proponent of Preventive Medicine and personalized executive health care. In 1988 he founded Corporate Healthcare Services and worked with over 250(N.B. the # grew to 700 but added Docs to do this full time) major corporations and the Federal Government to improve the health care of top executives and Federal Officials. He believes that the key to corporate success is having healthy, high energy leaders which requires knowledge and experience in Preventive and Alternative Medicine as well as Internal Medicine.

Dr. Mamana has lectured on the importance of understanding healthcare economics since medical residency when he took his electives at The Wharton School of Business and the University of Pennsylvania Medical Center. He was a member and then Chairman of The Council of Physicians of the American Hospital Association (AHA) for six years and a member of their Board of Trustees and then the Technology Council of AHA. He has advocated a close tie between Physicians and Hospitals to extend private insurance coverage to the 48 million uninsured in the U.S. He has lectured extensively at Hospitals and Medical Societies throughout the USA and Canada on Healthcare Economics and Preventive Medicine.

Dr. Mamana has been selected in multiple years as among the Top Physicians/ Internists in the DC area by Washingtonian Magazine and his medical peers.

He was given a Presidential Citation for his work in The Public Health Service as a Full Surgeon (Captain) in helping set up the National Health Service Corps to care for communities underserved by physicians and care givers. He set up a project in South Philadelphia affiliated with the University of Pennsylvania and then became an integral part of serving that community.

Ryan G. Bosch MD, FACP, MBA
Dr. Bosch graduated from the University of Virginia undergraduate as an Echols scholar. He completed his medical school training at the top of his class, also at the University of Virginia, on a full U.S. Air Force (USAF) scholarship. After completing a residency in internal medicine and a fellowship in aerospace medicine in the USAF in San Antonio, Texas, Dr. Bosch served in the Air Force as a highly decorated physician officer, and ultimately became the Chief of Flight Medicine at the Pentagon. In this capacity, Dr. Bosch was the personal physician to the Secretary of Defense, Chairman of the Joint Chiefs of Staff, and Secretary of the Air Force, as well as serving as a fully operational flight surgeon completing numerous support missions based out of Andrews Air Force Base. Upon separating from the USAF in 2002, Dr. Bosch joined the George Washington University (GWU) MFA academic practice and took on the leadership of their 30 physician internal medicine division. As Division Director of General Medicine, Dr. Bosch founded their Executive Health Center and became a physician leader on the White House Medical Team. Dr. Bosch has been the personal physician and health advisor for the Vice President, many cabinet leaders, celebrities, local CEOs, and international dignitaries.

In addition to his patient care role, Dr. Bosch became the Chief Medical Information Officer (CMIO) at GWU. With his prior background in computers, he directed GWU’s overall technology strategy and electronic health record installation during his tenure there. In addition to being Board certified in internal medicine, Dr. Bosch holds an MBA in health care informatics from GWU School of Business. Notable personal accolades include authoring the HIMSS national article of the year in 2006 in The Journal of Healthcare Information Management for his rapid CIS implementation methodology. For his innovative clinical work in technology, Dr. Bosch was named one of three “Microsoft Clinicians of the Year” in 2007. Dr. Bosch achieved national recognition for leading the overall GWU 400 physician practice from a fully paper system to a completely digital practice for all subspecialties in less than one year. For this achievement, Dr. Bosch was featured in an article in TIME magazine as a national leader and change agent for electronic health solutions. In a recognition by his peers for clinical acumen, Dr. Bosch was honored as a local “Best Doctor” by the Washingtonian magazine.

In addition to Dr. Bosch’s current clinical practice at Executive Healthcare Services Corporate Care, Dr. Bosch works on Deloitte’s national Clinical Information Systems team advising clients on all aspects of strategy around medical technology, system implementation, business optimization, physician engagement, and clinical transformation. Dr. Bosch has special medical interests in preventive care, exercise physiology, sports medicine, and nutrition. He lives in McLean with his wife and two children. Dr. Bosch’s favorite past time is coaching his kids sports and playing basketball and tennis.

Drs. Vasiliadis and Kelleher, the founders of Executive Healthcare Services, crafted EHS Corporate Care on the principle of proactive, consolidated, and personalized care.

Mark Vasiliadis, MD
Dr. Vasiliadis is a graduate of Langley High School, Virginia Tech and the University of Virginia School of Medicine. He completed his Family Practice residency training at Franklin Square Hospital in Baltimore, Maryland. He is board certified in Family Practice and has been practicing adult and pediatric medicine in the Northern Virginia area since 1994. Since 2003, he was honored by selection to the list of our area’s "Best Doctors" by both the Washingtonian and Virginia Business magazines.

Dr. Vasiliadis tutors medical students from Georgetown University Medical School and the George Washington School of medicine, where he is an Assistant Clinical Instructor. He has served on both the Fairfax County Medical Society and the Reston Hospital Medical Care Review committees. He enjoys his role as ‘Team Physician’ for multiple youth sports programs.

Dr. Vasiliadis married Lynne Epperly from Fairfax, Virginia in 1989. They have two children and reside in Great Falls, Virginia. Dr. Vasiliadis enjoys all sports, especially golf, racquetball and tennis. His special interests include sports medicine, exercise science and pediatrics; however, he enjoys caring for the entire family.

Kevin J. Kelleher, MD
Originally from Buffalo, New York, Dr. Kelleher is a board certified Family Physician who has practiced in the Northern Virginia area since 1996. Dr. Kelleher received his Medical Degree from the State University of New York at Buffalo and completed his residency at Franklin Square Hospital in Baltimore where he served as Chief Resident.

Dr. Kelleher is involved in local community and corporate health education through various talks on health related topics. Locally, he works with medical students as an Assistant Clinical Instructor for GWU Department of Medicine, has served on the Reston Hospital Infectious Disease committee and has served as a member of the local county school system's Family Life Education Curriculum Advisory Committee. He has spoken locally and nationally on subjects including migraine management, smoking cessation, and healthcare reform.

He has special interests in Sports Medicine, migraine headache, Adolescent Medicine and smoking cessation. His hobbies include the Sciences and American history. He enjoys all sports, especially golf, volleyball and football. He lives in Reston, Virginia with his wife, Karen, their son, Brayden, and their two dogs.

Dr. Kelleher has been named a "Top Doctor" in both Washingtonian Magazine and Northern Virginia Magazine. He has also on the "Best Doctors" list for 2007-08 and 2008-09, and one of Washington Consumers Checkbook 2009 Top Rated Primary Care Doctors.