20 Questions: John Callahan, DDS, MS
John Callahan offers advice for students and insight into the field of orthodontics
Juliet Farmer
Updated August 21, 2026 by Juliet Farmer
20 Questions is an SDN interview series featuring health professionals, educators, and leaders.
Topic Collection
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John Callahan offers advice for students and insight into the field of orthodontics
Juliet Farmer
Updated August 21, 2026 by Juliet Farmer
Amber C. Rolfes offers advice for students and insight into the field of Audiology
Juliet Farmer
Updated February 28, 2019 by Juliet Farmer
Angela Chien shares advice for students and offers insight into the field of Obstetrics and Gynecology
Lee Burnett
Published August 19, 2012 by Lee Burnett
Melissa Cathcart Thurlow shares advice for students and offers insight into the field of occupational therapy
Lee Burnett
Updated June 27, 2022 by Lee Burnett
Robert J Lewandowski shares advice for students and insight into the field of interventional oncology
Tom Folan
Updated February 28, 2019 by Tom Folan
Katerina Kucerova shares her perspective on being an occupational therapist and advice for students
Kathleen Lieu
Updated February 28, 2019 by Kathleen Lieu
Eran Magen shares his perspective on the field of psychology and advice for students
Juliet Farmer
Updated June 27, 2022 by Juliet Farmer
David Tran shares his perspective on the field of podiatry and advice for students
Juliet Farmer
Updated June 27, 2022 by Juliet Farmer
Chris Lundberg shares his perspective on the field of orthodontics and advice for students
Juliet Farmer
Updated August 21, 2026 by Juliet Farmer
Benjamin S. Chudner, O.D., F.A.A.O. shares his perspective on the field of optometry and gives advice for students
Juliet Farmer
Updated August 8, 2022 by Juliet Farmer
Chiara Switzer, DVM shares her perspective on the field of veterinary medicine and offers advice for students.
Juliet Farmer
Updated August 21, 2026 by Juliet Farmer
Speech-Language Pathology (SLP)
G. Robert Buckendorf shares his perspective on the field of speech pathology and advice for students
Juliet Farmer
Updated March 18, 2022 by Juliet Farmer
Dr. Owen Middleton shares his perspective on being an assistant medical examiner and advice for students
Juliet Farmer
Updated March 18, 2022 by Juliet Farmer
Dr. Naomi Star Sever shares her perspective on the field of dentistry and advice for students
Juliet Farmer
Updated June 27, 2022 by Juliet Farmer
Alison Grimes, AuD shares her perspective on the field of audiology and advice for students
Juliet Farmer
Updated February 28, 2019 by Juliet Farmer
Oleg Zvenigorodsky shares his perspective on the field of pharmacy and advice for students
Juliet Farmer
Updated June 27, 2022 by Juliet Farmer
David Andry, PT shares his perspective on the field of physical therapy and advice for students
Juliet Farmer
Updated February 28, 2019 by Juliet Farmer
Lani Hessen shares her perspective on the field of pediatric occupational therapy and advice for students.
Juliet Farmer
Updated June 27, 2022 by Juliet Farmer
Jonathan Williamson shares his perspective on the field of podiatry and advice for students.
Juliet Farmer
Updated June 27, 2022 by Juliet Farmer