USU Faculty Receive Prestigious Masterships from American College of Physicians

Three USU faculty members were recently recognized by the American College of Physicians for their elections to Mastership.

From left to right, retired U.S. Navy Capt. Thanh Hoang, retired U.S. Air Force Col. Heather Yun, and retired U.S. Air Force Col. Angelique Collamer stand for portraits. The three Uniformed Services University Department of Medicine faculty members were inducted as new Masters of the American College of Physicians during the organization's annual meeting April 16, 2026. The prestigious induction highlights their profound contributions to military medicine. (USU photo illustration)

May 5, 2026 by Wendy Li

Three national faculty members from Uniformed Services University’s (USU) Department of Medicine were inducted as new Masters of the American College of Physicians (MACP) on April 16. Dr. Angelique Collamer, Dr. Thanh Hoang, and Dr. Heather Yun were recognized at a convocation ceremony during the organization’s annual meeting, highlighting their profound contributions to military medicine.

Every year, the ACP considers candidates through a combination of achievements. The Awards Committee evaluates “qualities such as strength of character, integrity, perseverance, leadership, compassion, and devotion, as well as clinical expertise and commitment to advancing the art and science of medicine.”

“I am incredibly proud to see our distinguished faculty members recognized as MACPs,” said Dr. Paige Waterman, professor and chair of the Department of Medicine. “Each of them brings a legacy of excellence rooted in their years of active-duty service. Their election as a Master is not only a testament to the high caliber of dedication and scholarly achievement that defines our department, but also a reflection of the impact we continue to make on the future of military medicine.”

Collamer, a retired Air Force colonel, is a clinical professor in the Department of Medicine with expertise in spondyloarthropathies, systemic lupus erythematosus, Sjogren's Syndrome, and crystalline arthropathies. She is the immediate past Governor of the U.S. Air Force Chapter of the ACP.  An alumna of USU, her career spans more than 15 years in academic medicine and senior healthcare leadership, including roles as Chief Medical Officer at RAF Lakenheath Hospital and Service Chief at Walter Reed National Military Medical Center. Now a clinical rheumatologist and student physician coach, she works directly with medical students and trainees at pivotal moments in their development.

Hoang serves as Program Director for the National Capital Consortium Endocrinology Fellowship Program at Walter Reed National Military Medical Center and Director of the Endocrinology Division. A retired Navy captain, Hoang continues to support congressional delegations on international missions and has been recognized for his outstanding performance as team physician. Hoang has published over 150 peer-reviewed articles, letters to the editor, abstracts, and book chapters in the areas of thyroid, parathyroid, bone, and other endocrine problems.

Yun, also a retired Air Force colonel, is a professor of Medicine and currently Chief of Staff for the Department of Veterans Affairs, South Texas Veterans Health Care System. She oversees, directs, and coordinates all clinical operations for over 160,000 enrolled veterans, an

operating budget of $1.4 billion, and 5,600 employees. Yun previously served as the Deputy Commander for Medical Services at Brooke Army Medical Center and Medical Director of Infection Prevention at two referral military hospitals while deployed to Afghanistan. Her research interests include infectious complications of trauma, infections with multidrug-resistant bacteria, travel and deployment related illness, and respiratory viral infections.

The prestigious inductions of Collamer, Hoang, and Yun build upon a growing legacy of excellence within USU. In 2024, the American College of Physicians bestowed the same MACP honor upon Dr. Waterman and professor of Medicine Dr. Naomi Aronson, further cementing the university’s status as a hub of academic excellence and clinical leadership.