Overview
Osteoporosis, with current studies that focus on advances in diagnosis and natural history of male and postmenopausal osteoporosis. The study on male osteoporosis include a collaborative study with outside investigators is examining the utility of lateral spine bone densitometry in identifying men with osteoporosis and low trauma fractures.
Hypophosphatemic disorders, including X-link hypophosphatemic rickets and tumor-induced osteomalacia. My ongoing research study, in collaboration with Dr. L Darryl Quarles at the University of Kansas, seeks to further confirm and extend our understanding of the role of FGF-23 in human disorders of phosphate homeostasis, including patients with chronic kidney disease. Pending studies include primary and sub-investigator directed Phase 1 / 2 first in human studies examining the effects of a monoclonal antibody and enzyme replacement therapy for X-linked hypophosphatemic rickets and hypophosphatasia, respectively.
Hypophosphatemic disorders, including X-link hypophosphatemic rickets and tumor-induced osteomalacia. My ongoing research study, in collaboration with Dr. L Darryl Quarles at the University of Kansas, seeks to further confirm and extend our understanding of the role of FGF-23 in human disorders of phosphate homeostasis, including patients with chronic kidney disease. Pending studies include primary and sub-investigator directed Phase 1 / 2 first in human studies examining the effects of a monoclonal antibody and enzyme replacement therapy for X-linked hypophosphatemic rickets and hypophosphatasia, respectively.
Current Duke Appointments & Affiliations
Professor of Medicine
·
2021 - Present
Medicine, Endocrinology, Metabolism, and Nutrition,
Medicine
Member of the Duke Cancer Institute
·
2016 - Present
Duke Cancer Institute,
Institutes and Centers
Recent Scholarly Works
Secondary fracture prevention after vertebral, femur or pelvic fracture at US academic medical center.
Journal article Arch Osteoporos · March 5, 2026 UNLABELLED: This study sought to assess rates of osteoporosis treatment following an index fragility vertebra, femur, or pelvic fracture at a US academic medical center. The results highlight persistent low treatment rates following fracture and emphasize ... Full text Link to item CiteSwitching from active vitamin D and phosphate supplementation to burosumab significantly corrects lower limb malalignment in pediatric X-linked hypophosphatemia.
Journal article J Bone Miner Res · November 29, 2025 X-linked hypophosphatemia (XLH) is a rare disorder of renal phosphate wasting and dysregulated active vitamin D metabolism, ultimately presenting as rickets and osteomalacia, among other manifestations. Lower extremity deformity (genu valgum and/or varum) ... Full text Link to item CiteClinical Pearls From JCEM Case Reports: ENDO 2025.
Journal article JCEM Case Rep · November 2025 Full text Link to item CiteRecent Grants
Endocrinology and Metabolism Training Program
Inst. Training Prgm or CMEMentor · Awarded by National Institute of Diabetes and Digestive and Kidney Diseases · 2024 - 2029X-linked Hypophosphatemia Disease Monitoring Program (XLH-DMP) UX023-CL401
ResearchPrincipal Investigator · Awarded by Ultragenyx Pharmaceutical · 2018 - 2028Characterizing neurocognitive symptoms in older adults with primary hyperparathyroidism
ResearchCollaborator · Awarded by National Institutes of Health · 2023 - 2025View All Grants
Education
The University of Chicago ·
1989
M.D.