Bone Health Specialists

The physician specialists of the Bone Health Program are world-renowned experts in research and clinical management of osteoporosis and other bone and mineral diseases. They have many years of experience in this specific field of medicine, also functioning as educators to new generations of specialists. They are faculty of Washington University School of Medicine, Division of Bone and Mineral Diseases and are affiliated with Barnes-Jewish Hospital.

James Avery, MD

Associate Professor of Clinical Medicine

Dr. Avery, a Washington University trainee and board certified internist, joined the Bone Health Program in May 2011 as a part-time physician. He is a primary care physician at the Grant Medical Clinic in St. Louis, and has been active in the management of osteoporosis for many years. He has been voted one the “Best Doctors in St. Louis” since 2002 by the St. Louis Magazine. He brings his expertise as a general practitioner to our specialty, focusing on osteoporosis.  Dr. Avery sees patients in the Bone Health Program at the Center for Advanced Medicine.

Roberto Civitelli, MD

Chief, Division of Bone and Mineral Diseases and Sydney M & Stella H Schoenberg Professor of Medicine

Dr. Roberto Civitelli is a world renowned expert on osteoporosis and bone mineral diseases. He has been in the Division of Bone and Mineral Diseases for more than 25 years and has been affiliated with the Bone Health Program since its inception. He is a physician-scientist and runs an active bone biology research program. His research interests focus on mechanism of cell-cell communication within the bone microenvironment, and how intercellular communication affects skeletal development, homeostasis and response to mechanical stimuli and cancer metastases.  He has served as President of the American Society for Bone and Mineral Research and as member of the Board of Directors of the Federation of American Societies for Experimental Biology.  He currently serves as the Chief of the Division of Bone and Mineral Diseases. His clinical focus is on osteoporosis and metabolic bone diseases.  He sees patients at all Bone Health Program sites.

Kathryn Diemer, MD

Clinical Director of Bone Health Program and Professor of Medicine

Dr. Kathryn Diemer is a highly respected physician and a St. Louis native. She has been part of the Bone Health Program since 1989, and is a leading expert on osteoporosis. She lectures nationally and internationally on osteoporosis and bone densitometry, and has been named in the St. Louis Magazine as one of St. Louis’ 100 Best Doctors every year since 2002.  She sees patients at Barnes-Jewish Hospital West County.

Carolyn Jachna, MD

Assistant Professor of Medicine

Dr. Jachna obtained her MD degree at Northwestern University, in Chicago, IL, in 1998; and completed her residency training in Internal Medicine at Barnes-Jewish Hospital in 2001. Afterwards she was appointed Assistant Professor of Medicine at the University of Kansas, where she also practiced at the Hiatt Osteoporosis Center.  Dr. Jachna joined the Bone Health Program in 2010 and practices at Barnes-Jewish Hospital West County. Her areas of clinical specialty include osteoporosis and bone and mineral diseases.

Betsy Lin, MD

Instructor in Medicine

Dr. Lin received her medical degree and completed her internal medicine residency and endocrine fellowship at the University of California, Irvine, and in part at Stanford University Hospital.

Mahshid Mohseni, MD

Instructor in Medicine

Dr. Mohseni received her medical degree from Isfahan University of Medical Sciences in Isfahan, Iran; followed by an internship in the same Institution.  She later completed her internal medicine residency at Joan C. Edwards School of Medicine, in Huntington WV, and her endocrinology fellowship at the University of Miami School of Medicine, in Miami, FL. Dr. Mohseni recently completed a fellowship in bone and mineral diseases at Washington University Bone Health Program.

Nilton Salles Rosa Neto, MD, PhD, RhMSUS

Clinical Fellow

Dr. Salles Rosa Neto received his medical degree from Universidade Federal do Parana, Brazil, in 2004. In 2008, he completed his Internal Medicine residency, and in 2010, a Rheumatology fellowship at Universidade de São Paulo, Brazil. In 2013, he obtained his PhD in Immunological and Infections processes, followed by a post-doctoral clinical research fellowship in rheumatology, both also at Universidade de São Paulo, under the tutorship of Dr. Rosa Maria Pereira, a prominent rheumatology and bone specialist in Brazil. Since 2017, he has worked as Rheumatologist at Hospital Israelita Albert Einstein and other medical centers in São Paulo, Brazil. He has served as Sub-Investigator in multiple industry-sponsored clinical trials on the effect of biologicals, primarily monoclonal antibodies, in rheumatic disorders; and has published 15 research articles, including one case report in the New England Journal of Medicine. He speaks fluent English and French, aside from Portuguese.

Julie Unk, DNP, ANP

Nurse Practitioner

Dr. Unk is an Adult Nurse Practitioner who joined the Bone Health Program in August of 2015. She completed her nurse practitioner training in 1998 and has treated arthritis patients for the past 17 years, 11 years in the Rheumatology Division of Washington University. For 20 years she has been involved in multi-center clinical medication investigations which have led to the availability of many of the medications used today to treat arthritis. She completed her doctorate in nursing practice degree in 2011. Her focus is on osteoporosis disease understanding and treatment adherence.

Michael Whyte, MD

Professor of Medicine, Pediatrics and Genetics

Dr. Whyte earned his MD degree at Downstate College of Medicine, State University of New York, Brooklyn, NY, and then had residency training in Internal Medicine at Bellevue Hospital in New York City. After his fellowship in Endocrinology, he joined the faculty of our Division in the late 1970s.  Dr. Whyte’s research interests include the cause and treatment of heritable skeletal disorders in children and adults.  He directs the Center for Metabolic Bone Disease and Molecular Research at Shriners Hospital for Children, St. Louis, which serves as a national resource for the diagnosis, treatment, and investigation of disorders of bone and mineral metabolism and skeletal dysplasias in children.  In addition to his activities at Shriners Hospital, Dr. Whyte sees patients in the Bone Health Program at the Center for Advanced Medicine.

Naga Yalla, MD

Assistant Professor of Medicine

Dr. Yalla completed her internal medicine training and endocrine fellowship at the University of Kentucky and is currently Assistant Professor of Medicine in the Division of Endocrinology, Metabolism and Diabetes.  Dr. Yalla is a board certified endocrinologist and internist, and works on the inpatient diabetes service at Barnes Jewish Hospital. After training in our Division’s clinical program, Dr. Yalla joined the Bone Health Program in July 2013. Her main clinical interests are osteoporosis, hyperparathyroidism, and other metabolic bone diseases. She is currently overseeing the Fracture Liaison Service at BJH/Washington University Hospital.  She sees patients at the Center for Advanced Medicine.