Staff Clinicians

The dentists and physicians listed below serve as NIDCR staff clinicians. These specialists perform clinical research at NIH and offer evaluations and care to patients enrolled in protocols at the NIH Clinical Center. Select the links below to view biographies and research interests for each clinician.

Current Staff Clinicians

Vivian Szymczuk, M.D.
Vivian Szymczuk, M.D.
Staff Clinician
Metabolic Bone Disorders Unit
(240) 204-3300
vivian.szymczuk@nih.gov
Zohreh Khavandgar, D.D.S., Ph.D.
Zohreh Khavandgar, D.D.S., Ph.D.
Staff Clinician
NIH Dental Clinic
(301) 496-4486
zohreh.khavandgar@nih.gov
Jiwon Lim D.M.D., M.P.H.
Jiwon Lim, D.M.D., M.P.H.
Oral Medicine/Hospital Dentist
NIH Dental Clinic
(301) 827-6727
jiwon.lim@nih.gov
Rachel I. Gafni, M.D.
Rachel I. Gafni, M.D.
Senior Research Physician
Skeletal Disorders and Mineral Homeostasis Section
Program Director
Pediatric Endocrinology Fellowship (NICHD)
(301) 594-9924
gafnir@nih.gov
Konstantinia Almpani
Konstantinia Almpani, D.D.S., M.Sc.
Staff Clinician
NIH Dental Clinic
(301) 827-1647
nadine.almpani@nih.gov
Dr. Golnar Jahanmir, D.D.S.
Golnar Jahanmir, D.D.S.
Pediatric/Hospital Dentist
NIH Dental Clinic
(301) 443-8010
golnar.jahanmir@nih.gov
Kelly Lauter Roszko, M.D., Ph.D.
Kelly Lauter Roszko, M.D., Ph.D.
Staff Clinician
Skeletal Disorders and Mineral Homeostasis Section
(301) 496-4563
kelly.roszko@nih.gov
Last Reviewed
October 2023