Kathryn McCrystal Dahir, MD

Physician, Assoc. Prof. of Medicine

About Dr. Dahir

Dr. Kathryn Dahir received her undergraduate degree from the University of Virginia. She completed medical school at East Virginia Medical School, and completed her Internal Medicine Residency training at Vanderbilt University Medical Center. She then pursued a fellowship in Diabetes, Endocrinology and Metabolism, Vanderbilt University Medical Center. She then pursued a fellowship in Diabetes, Endocrinology and Metabolism, Vanderbilt University Medical Center (2002-2004). She is an Associate Professor of Medicine in the Division of Endocrinology and Metabolism at the Vanderbilt University Medical Center. She is also the Associate Director of the Vanderbilt Endocrinology Fellowship program and serves on the Clinical Competency Committee for fellowship education. She is the founder and is the Course Director for the Endocrinology and Rheumatology Metabolic Bone Fellows conference.

Dr. Dahir's clinical and research interests are calcium- and bone-related disorders including hypophosphatasia, osteogenesis imperfecta, tumor induced osteomalacia, fracture nonunion, hyperparathyroidism, osteoporosis, and rickets. She is the principal investigator for both Phase 2A, randomized multi-center, open label, pharmacokinetic and dose response study of asphotase alpha in adult patients with pediatric hypophosphatasia and an observational, longitudinal, prospective, long-term registry of patients with hypophosphatasia. She is an investigator in collaboration with Vanderbilt bioinformatics faculty examining, the significance of adults with both dominant negative mutations for the disorder, hypophosphatasia, and low alkaline phosphatase levels. She has multiple collaborative research endeavors within the Department of Orthopedics.

On a national level, Dr. Dahir serves on the Endocrine Society committee as the bone and calcium disorders expert leading the development of the maintenance of certification and ESAP products. She is a board member of the Magic Foundation and has been named a U.S. News and World Report Top Doctor for the past 4 years.


Articles in Peer-Reviewed Journals
Dahir KM, Basaria SS, Boelaert K, Collazo-Clavell ML, Dalkin AC, Donner TW, Findling JW, Freda PU, Freel M, Green J, Jagasia S, Jan de Beur SM, Jonklaas J, Tannock LR, Vella AV, Welt C. ESAP 2015: Endocrine Self-Assessment Program. Washington, DC: Endocrine Society; 2015.
Attention deficit/hyperactivity disorder: Association between medication therapy and fracture occurrence. Brandon A. Perry, M.D., Kristin R. Archer, Ph.D., Florent Elefteriou, Ph.D., Jennifer K. Green, M.D., Yanna Song, M.S., Yun Ma, Ph.D., Kathryn M. Dahir, M.D. Osteoporos Int. ;27(3) DOI: 10.1007/s00198-016-3569-8. February 2016
Dahir KM, Dalkin AC, Basaria SS, Collazo-Clavell ML, Donner TW, Findling JW, Freda PU, Freel M, Green J, Jagasia S, Jan de Beur SM, Jonklaas J, Mandel SJ, Tannock LR, Vella AV, Welt C. ESAP 2014: Endocrine Self-Assessment Program. Washington DC; Endocrine Press; 2014.
Hypercalcemia secondary to gastrointestinal stromal tumors: parathyroid hormone-related protein independent mechanism?; Prathima Jasti, M.D., Vipul Tulsi Lakhani, M.D., Alison Woodworth, Ph.D., Kathryn McCrystal Dahir, M.D. Endocr Pract. 19(6):e158-62. Doi:10.4158/EP13102.CR November-December, 2013 Sep 6:1-15.
Sodium Thiosulfate in the Treatment of Nonuremic Calciphylaxis; Ning, Matthew; Dahir, Kathryn; Castellanos, Emily; McGirt, Laura. J Dermatol. 2013Aug;40(8):649-52. Doi: 10.1111/1346-8138.12139. Epub 2013 May 10.
Differentiating Familial Hypocalciuric Hypercalcemia from Primary Hyperparathyroidism; Myrick C. Shinall, Jr., MD, Kathryn McCrystal Dahir, MD, James T. Broome, MD. Endocrine Practice. 19(4):697-702. July-August 2013.
Improved Screening for CFRD Achieved Through Collaboration Between Pediatric and Adult Endocrinology and Pulmonary Providers at The Vanderbilt CF Center: Pediatric CF Program Results: 449. Brown, R. F.; Bremer, A.; Franco, W.; Driskill, C.; Brennan, K.; Vincent, W.; Colvin, K.; Guy, D.; Grisso, A.; Duke, L.; Dahir, K.; Clark, A.; Slovis, B.; Perkett, E. Pediatric Pulmonology. 46(34) Supplement 1:375. October 2011.
Improved Screening for CFRD Achieved Through Collaboration Between Pediatric and Adult Endocrinology and Pulmonary Providers at The Vanderbilt CF Center: Adult CF Program Results: 467. Slovis, B. 1; Guy, D. 1; Dahir, K.1; Franco, W. 2,1; Brown, R. 2; Bremer, A. A. 2; Perkett, E. 2. Pediatric Pulmonology. 46(34), Supplement 1:382, October 2011.
Ectopic ACTH Hyper secretion Due to a Primary Pulmonary Paraganglioma, Kathryn McCrystal Dahir, Adriana L. Gonzalez, Monica P. Revelo, Rafeeq Ahmed, John R. Roberts, and Lewis S. Blevins, Jr. Endocrine Practice. 2004 Sep-Oct; 10(5): 424-8
Treatment of Adult Patients with Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency: A Clinical Practice Audit, Howard Y. Li, M.D.,Kathryn McCrystal Dahir, M.D. and Lewis S. Blevins, Jr., M.D. Endocrine Practice. 2003 Sep-Oct, 9(5): 347-52
“Bilateral Femoral Neck Fractures Secondary to Hypocalcemic Seizures in a Skeletally Immature Patient”; J.S. Blanco, G. Dahir, K. McCrystal. American Journal of Orthopedics. 1999; 28:187-188
Book Chapters
Post- transplantation bone disease: Prevalence, monitoring, prevention, and management guidelines; Chapter 15. Kathryn Dahir, MD, Brandon Perry, MD, Shubhada Jagasia, MD. Blood and Marrow Transplantation Long Term Management: Prevention and Complications, Bipin N. Savani (Editor) ISBN: 978-1-118-47340-5 414 pages, December 2013, Wiley-Blackwell
Poster Presentations
Parathyroid Carcinoma Presenting As Severe Hyperparathyroidism; Shimon M Harary, MD, Shichun Bao, MD PhD, James T Broome, MD, Kathryn M Dahir, MD. Endocrine Practice ACE Meeting, 2013
Resistant Hypoglycemia in Gastric Lymphoma with Distal Pancreatectomy in Setting of Recurrent Subcutaneous Octreotide Treatment; Shimon Harary MD,Kathryn McCrystal Dahir MD. Endocrine Practice ACE Meeting, 2013
Metabolic and Endocrine Abnormalities in Spinal Fusion Patients with Pseudoarthrosis; Colin G. Crosby, MD; Kathryn Dahir, MD. Presented at the International Spine/ Orthopaedic Meetings, 2012