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Washington DC VA Medical Center

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Leadership Team

Portrait of Michael S. Heimall

Michael S. Heimall |

Medical Center Director

Mr. Michael S. Heimall is a Veteran of the United States Army, serving more than 30 years in the Medical Service Corps before retiring at the rank of Colonel in June 2017. He was appointed Medical Center Director at the Washington DC Veterans Affairs Medical Center October 14, 2018. With more than 2,400 employees, over 100,000 Veterans enrolled for care and a budget of more than 600 million dollars, Mr. Heimall leads one of the largest VA medical centers in the nation. He is also responsible for the Community Resource and Referral Center as well as five community-based outpatient clinics located in Washington DC, Virginia, and Maryland.

During his military career, Mr. Heimall served in a variety of staff and command positions, including as Director, Walter Reed National Military Medical Center in Bethesda, MD. He previously served as the Commander, William Beaumont Army Medical Center in El Paso, TX and Irwin Army Community Hospital at Fort Riley, KS. He also served as the Healthcare Administration Consultant to the Army Surgeon General from 2015 to 2017. Upon retirement, Mr. Heimall joined OptumServe in McLean, VA, as Vice President for Military & Veterans Health.

Mr. Heimall grew up in Sussex, NJ and earned his bachelor’s degree and commission from Norwich University, Northfield, VT in 1987. He earned a Master’s Degree in Healthcare Administration from Baylor University in 1996 and a Master’s Degree in Strategic Studies from the U.S. Army War College in 2009.

His significant awards include the Defense Superior Service Medal, the Legion of Merit, the Meritorious Service Medal, and the Joint Commendation Medal. He is also a member of the Order of Military Medical Merit and recipient of the Army Surgeon General’s “A” designator for excellence in the field of Healthcare Administration. He is a Fellow of the American College of Healthcare Executives.


Portrait of Christopher J. Irwin

Christopher J. Irwin |

Associate Director

Mr. Christopher Irwin was named Associate Director in September 2018. Before assuming this role, he was serving as the Chief Executive Officer, Clifton T. Perkins of the State of Maryland Healthcare System. Prior to that position he worked as a healthcare executive within the South Bay-Harbor City Hospital of Kaiser Permanente of Southern California.

Mr. Irwin is a retired Navy Captain; a Veteran with over 24 years of honorable and distinguished service. He served in many critical and diverse positions within the Military Healthcare System to include overseas tours on a LHA casualty and receiving ship, staff supporting positions at the Bureau of Medicine and Surgery, TRICARE Management, and Health Affairs-Pentagon and various senior healthcare executive positions as the Chief Operating Officer and Administrative Officer at the Naval Medical Centers at Walter Reed-Bethesda and Balboa, San Diego. He received numerous personal and unit awards to include a Bronze Star for his tour of duty during his time in Iraq as the Deputy, Director of Health Affairs.

He is a Michigan/Ohio native, earning his Bachelor of Science in Healthcare Administration from the University of Kentucky and his Master’s in Healthcare Administration from Baylor University. Mr. Irwin is a life-long learner, a Certified John C. Maxwell Executive Speaker/Coach/Trainer and is a Fellow with the American College of Healthcare Executives (ACHE).

Mr. Irwin is married to active duty Navy Captain Lisa Mulligan; he has three grown children Erin, Kennedy and Connor.


Portrait of Charles Faselis, MD

Charles Faselis, MD |

Chief of Staff

Dr. Charles Faselis has been serving as the Chief of Staff of the Medical Center since April, 2016.

He is the author of over 100 peer reviewed publications and two books in Internal Medicine. He has received several teaching awards including: Attending-of-the-Year, the Osler award and the Golden Apple award for teaching. He is the former president of the Mid-Atlantic chapter of the American Society of Hypertension and is a Fellow of the American College of Physicians and the American Society of Hypertension.

He has been selected as member of the Alpha Omega Alpha Honor Society. Dr. Faselis is a clinician educator who enjoys teaching residents and students in the inpatient and outpatient setting. His research interests include hypertension, diabetes, patient safety and medical education. He received his medical degree from the University Of Athens School of Medicine and completed his residency in Internal Medicine at Cook County Hospital and Medicine Fellowship at the University of North Carolina.

Prior to being appointed the Chief of Medical Services, Dr. Faselis served as the Associate Chief of Medicine, the Program Director of the Internal Medicine Residency program and also as the Associate Chief of Staff for Education and Academic Affairs. He currently is a Professor of Medicine at the George Washington University School of Medicine and Uniformed Services University.


Portrait of Denise Boehm, RN

Denise Boehm, RN |

Nurse Executive

Ms. Denise Boehm was named Associate Director for Patient Care Services/Chief Nurse Executive in September, 2017.

She previously served as Associate Director for Patient Care Services/Nurse Executive at the Louis A. Johnson VA Healthcare System in Clarksburg, West Virginia. from 2012 to 2017. Prior to her roles in executive leadership, she served Veterans and staff at the VA Pittsburgh Healthcare System as a staff nurse, critical care nurse educator, nurse manager of the Emergency Department and associate chief nurse for Primary Care.

Ms. Boehm is a native of Pittsburgh, Pennsylvania. She has served in various professional organizations to include: local chapters of the American Nurses Association and the American Association of Critical Care Nurses where she coordinated education and community support events.

She earned a Bachelor of Science Degree in Nursing and a Master of Science Degree in Nursing Leadership and Education from Carlow University in Pittsburgh. She is certified by the American Nurses Credentialing Center as a Nurse Executive-Advanced. Ms. Boehm completed the Network Executive Healthcare Leadership Institute (NEHCLI) and the Nurse Executive Leadership Program at the Federal Executive Institute and is a coach for the Healthcare Leadership Development Program. Ms. Boehm has been an Adjunct Nursing Faculty member at Carlow University and Waynesburg University in Waynesburg, Pennsylvania.


Portrait of Stanley L. Staton

Stanley L. Staton |

Assistant Director

Mr. Stanley Staton was named Assistant Director in September 2018. Before assuming this role, he has been serving as the Acting Assistant Director of the Washington DC Veterans Affairs Medical Center since November 2017.

He joins the Washington DC team from Michael E. DeBakey Veterans Affairs Medical Center (MEDVAMC) in Houston, Texas, where he served as Chief of Police, acting Associated Director, acting Chief, Environmental Management Services and Facility Planner.

Mr. Staton is a retired Army Veteran with 26 years of distinguished service. He is a Florida native, earning his BA in Criminal Justice from Saint Leo University in Florida and his MBA at the University of Phoenix. Beyond his academic accomplishments, Mr. Staton is a graduate of the Leadership Veterans Affairs (LVA), a Mentor (fellow level) and a member of the American College of Healthcare Executives (ACHE).