Nathan R. Selden, M.D., Ph.D., FACS, FAAP

  • Professor of Neurological Surgery, School of Medicine
  • Executive Vice President, OHSU
  • Dean, Office of the Dean, School of Medicine
  • Mario and Edith Campagna Chair of Pediatric Neurological Surgery, Neurological Surgery, School of Medicine

Biography

Nathan R. Selden, M.D., Ph.D., was appointed Dean of the OHSU School of Medicine on June 20, 2024. He is a professor of neurological surgery and holds the Mario and Edith Campagna Chair in Pediatric Neurosurgery. He had served as interim dean of the School of Medicine since February 2024. 

Dr. Selden joined OHSU and OHSU Doernbecher Children’s Hospital in 2000 as an assistant professor of neurological surgery. He has led major expansions of the neurosurgery residency training program, the division of pediatric neurosurgery and the department of neurological surgery, where he served as chair for eight years.

He has also led the effort to create partnerships in the clinical neurosciences with Legacy Health. The relationships he has built with key Legacy Health leaders and his own experience as a staff neurosurgeon at Randall Children’s Hospital provide a strong foundation as OHSU and Legacy embark on a groundbreaking integration.

Dr. Selden’s scientific research has focused on central mechanisms of pain sensation. He was the co-principal investigator and surgeon for the first-ever trial of human neural stem cell therapy. He also researches outcomes for neurosurgical care delivered to children with spinal congenital malformations and is an author of the Pediatric Traumatic Brain Injury Guidelines, which are used around North America and in many countries around the world to improve the care of seriously injured children. 

He has a national and international reputation for studying new methods of neurosurgical education and continuing education that promote patient safety and quality. He is a past president of the Congress of Neurological Surgeons, one of the largest neurosurgical professional organizations in the world; is currently president of the Society of Neurological Surgeons, the world’s oldest academic neurosurgical society; and is vice chair of the American Board of Neurological Surgery. In 2013, he received the Accreditation Council for Graduate Medical Education’s Parker Palmer Courage to Teach Award.

Dr. Selden earned a bachelor’s degree from Stanford University, a Ph.D. from Cambridge University as a British Marshall Scholar, and an M.D. from Harvard Medical School. He completed a residency in neurosurgery at the University of Michigan Medical Center, Ann Arbor, and a fellowship in pediatric neurological surgery at Northwestern University Medical School, Chicago. 

A prolific writer, Dr. Selden has published over 200 articles related to neurosurgical science, clinical care and education. In addition, with Professor Nigel Nicholson (Dean Emeritus of Reed College), he authored The Rhetoric of Medicine: Lessons on Professionalism from Ancient Greece (Oxford University Press, 2019). He is also Editor of the acclaimed 7-volume series, Neurosurgery by Example (Oxford University Press, 2018-2019) and of its Pediatric Neurosurgery volume (with Dr. Lissa Baird).

Education and training

  • Degrees

    • A.B., 1986, Stanford University
    • Ph.D., 1990, Cambridge University
    • M.D., 1993, Harvard Medical School
  • Residency

    • Neurosurgery, University of Michigan Medical Center, Ann Arbor, 1999
  • Fellowship

    • Pediatric neurological surgery, Northwestern University Medical School, Chicago, 2000
  • Certifications

    • American Board of Pediatric Neurological Surgery, 2011
    • American Board of Neurological Surgery, 2004

Memberships and associations:

  • Congress of Neurological Surgeons, Past-President
  • Society of Neurological Surgeons
  • American Association of Neurological Surgeons
  • American Academy of Neurological Surgery
  • American Society of Pediatric Neurosurgeons
  • Cambridge Philosophical Society
  • Fellow, American College of Surgeons
  • Fellow, American Academy of Pediatrics

Areas of interest

  • Pediatric epilepsy, Cranial Synostosis, Chiari Malformation, Tethered Spinal Cord, Neurosurgical Education

Honors and awards

  • British Marshall Scholar, 1986-89
  • Award of the American Academy of Neurological Surgery, 1998
  • ACGME Parker-Palmer Courage to Teach Award, 2013

Publications

Elsevier pure profile

Selected publications

  • The Rhetoric of Medicine: Lessons on Professionalism from Ancient Greece: Nigel Nicholson, Nathan Selden

Publications

  • Active Teaching Techniques Using Virtual Didactics

    Journal of Surgical Education
    1. Martina Stippler
    2. Sarah E. Blitz
    3. Carolyn Quinsey
    4. David Limbrick
    5. Richard Byrne
    6. Greg Zipfel
    7. Nathan R. Selden
  • Concurrent Craniosynostosis and Positional Plagiocephaly

    Face
    1. Gwendolyn E. Daly
    2. Peter Ferrin
    3. Jourdan A. Carboy
    4. Lori K. Howell
    5. Nathan R. Selden
    6. Erik M. Wolfswinkel
  • Increasing Use of Rapid Magnetic Resonance Imaging for Children with Blunt Head Injury

    Journal of Pediatrics
    1. Beech S. Burns
    2. Nelly Nouboussi
    3. Kenneth DeVane
    4. Walker Andrews
    5. Nathan R. Selden
    6. Amber Lin
    7. David Pettersson
    8. Mubeen Jafri
    9. David Sheridan
  • Innovative growth and development of a neurological surgery residency cadaveric spine-simulation training program

    Journal of Neurosurgery: Spine
    1. Robert Unger
    2. Bryan Schreiner
    3. Brandi W. Pang
    4. James T. Obayashi
    5. Shirley McCartney
    6. Jackie Dingman
    7. Nathan R. Selden
    8. Aclan Dogan
    9. Jeremy N. Ciporen
  • Management of Coincident Metopic and Unilateral Lambdoid Craniosynostosis, a Rare Entity

    Face
    1. Gwendolyn E. Daly
    2. Andrew M. Ferry
    3. Lori K. Howell
    4. Nathan R. Selden
    5. Erik M. Wolfswinkel
  • On-Call Workload Differences in Neurosurgery

    Neurosurgery
    1. Hao Tan
    2. Stephen G. Bowden
    3. Dominic A. Siler
    4. Brannan E. O'neill
    5. Maryam N. Shahin
    6. Adeline L. Fecker
    7. Samantha Fleming-Sheffels
    8. Seunggu Jude Han
    9. Nathan R. Selden
    10. Jesse Winer
    11. Josiah N. Orina
  • The role of occipital condyle and atlas anomalies on occipital cervical fusion outcomes in Chiari malformation type I with syringomyelia

    Journal of Neurosurgery: Pediatrics
    1. Alexander T. Yahanda
    2. Joyce Koueik
    3. Laurie L. Ackerman
    4. P. David Adelson
    5. Gregory W. Albert
    6. Philipp R. Aldana
    7. Tord D. Alden
    8. Richard C.E. Anderson
    9. David F. Bauer
    10. Tammy Bethel-Anderson
    11. Karin Bierbrauer
    12. Douglas L. Brockmeyer
    13. Joshua J. Chern
    14. Daniel E. Couture
    15. David J. Daniels
    16. Brian J. Dlouhy
    17. Susan R. Durham
    18. Richard G. Ellenbogen
    19. Ramin Eskandari
    20. Herbert E. Fuchs
    21. Gerald A. Grant
    22. Patrick C. Graupman
    23. Stephanie Greene
    24. Jeffrey P. Greenfield
    25. Naina L. Gross
    26. Daniel J. Guillaume
    27. Todd C. Hankinson
    28. Gregory G. Heuer
    29. Mark Iantosca
    30. Bermans J. Iskandar
    31. Eric M. Jackson
    32. George I. Jallo
    33. James M. Johnston
    34. Bruce A. Kaufman
    35. Robert F. Keating
    36. Nickalus R. Khan
    37. Mark D. Krieger
    38. Jeffrey R. Leonard
    39. Cormac O. Maher
    40. Francesco T. Mangano
    41. Jonathan Martin
    42. J. Gordon McComb
    43. Sean D. McEvoy
    44. Thanda Meehan
    45. Arnold H. Menezes
    46. Michael S. Muhlbauer
    47. Brent R. O’Neill
    48. Greg Olavarria
    49. John Ragheb
    50. Nathan R. Selden
    51. Manish N. Shah
    52. Chevis N. Shannon
    53. Joshua S. Shimony
    54. Matthew D. Smyth
    55. Scellig S.D. Stone
    56. Jennifer M. Strahle
    57. Mandeep S. Tamber
    58. James C. Torner
    59. Gerald F. Tuite
    60. Elizabeth C. Tyler-Kabara
    61. Scott D. Wait
    62. John C. Wellons
    63. William E. Whitehead
    64. Tae Sung Park
    65. David D. Limbrick
    66. Raheel Ahmed
  • A Method of Intraoperative Registration Verification to Prevent Accuracy Errors in Robot-Assisted Stereotactic Electroencephalography Electrode Placement

    World Neurosurgery
    1. Miner N. Ross
    2. Erik W. Larson
    3. Maryam N. Shahin
    4. Nasser K. Yaghi
    5. David J. Mazur-Hart
    6. Ann Mitchell
    7. Faye Mulcahy
    8. Lia D. Ernst
    9. Kelly L. Collins
    10. Nathan R. Selden
    11. Ahmed M. Raslan
  • An assessment of the long-term impacts of the coronavirus disease 2019 pandemic on academic neurosurgery

    Journal of neurosurgery
    1. Tessa A. Harland
    2. Julie G. Pilitsis
    3. Nathan R. Selden
    4. Deborah L. Benzil
  • Anti-inflammatory effects of vagus nerve stimulation in pediatric patients with epilepsy

    Frontiers in immunology
    1. Supender Kaur
    2. Nathan R. Selden
    3. Alejandro Aballay
  • Innovative growth and development of a neurological surgery residency cadaveric skull base simulation training program

    Clinical Neurology and Neurosurgery
    1. Brandi W. Pang
    2. James ‘Obi’ Obayashi
    3. Bryan Schreiner
    4. Robert Unger
    5. Shirley McCartney
    6. Jackie Dingman
    7. Nathan R. Selden
    8. Justin S. Cetas
    9. Aclan Dogan
    10. Jeremy N. Ciporen
  • Milestones for neurosurgery sub-interns

    Journal of neurosurgery
    1. Stephen G. Bowden
    2. Hao Tan
    3. Michael G. Rothbaum
    4. Steven H. Cook
    5. Simon Hanft
    6. Jason Heth
    7. Peter F. Morgenstern
    8. Jeffrey P. Mullin
    9. Josiah N. Orina
    10. Jonathan L. Wilson
    11. Jesse L. Winer
    12. Stacey Q. Wolfe
    13. Lola B. Chambless
    14. Nathan R. Selden
  • Physiological Responses and Training Satisfaction During National Rollout of a Neurosurgical Intraoperative Catastrophe Simulator for Resident Training

    Operative Neurosurgery
    1. Dominic A. Siler
    2. Daniel R. Cleary
    3. Karen J. Tonsfeldt
    4. Arvin R. Wali
    5. Holly E. Hinson
    6. Alexander A. Khalessi
    7. Nathan R. Selden
  • Toward rational use of repeat imaging in children with mild traumatic brain injuries and intracranial injuries

    Journal of Neurosurgery: Pediatrics
    1. Gabrielle W. Johnson
    2. Jacob K. Greenberg
    3. Andrew T. Hale
    4. Ranbir Ahluwalia
    5. Madelyn Hill
    6. Ahmed Belal
    7. Shawyon Baygani
    8. Randi E. Foraker
    9. Christopher R. Carpenter
    10. Yan Yan
    11. Laurie L. Ackerman
    12. Corina Noje
    13. Eric Jackson
    14. Erin C. Burns
    15. Christina M. Sayama
    16. Nathan R. Selden
    17. Shobhan Vachhrajani
    18. Chevis N. Shannon
    19. Nathan Kuppermann
    20. David D. Limbrick
  • Applying to residency

    Journal of neurosurgery
    1. M. Harrison Snyder
    2. Vamsi P. Reddy
    3. Ankitha M. Iyer
    4. Aruna Ganju
    5. Nathan R. Selden
    6. Jeremiah N. Johnson
    7. Stacey Q. Wolfe
    8. Bernard R. Bendok
    9. Ketan Bulsara
    10. Lola Chambless
    11. Mark S. Dias
    12. Gerald A. Grant
    13. Costas Hadjipanayis
    14. Jason Heth
    15. Brian L. Hoh
    16. Judy Huang
    17. Michael T. Lawton
    18. Madison Michael
    19. Jonathan P. Miller
    20. Peter Nakaji
    21. Clemens Schirmer
    22. Alejandro Spiotta
    23. Jamie Ullman
    24. Jamie Van Gompel
    25. Reza Yassari
    26. Gregory J. Zipfel
    27. Susan Panullo
    28. Kathy Guzman
    29. Pam Lane
    30. Stephen Bowden
    31. Walavan Sivakumar
    32. David Dornbos
    33. Debraj Mukherjee
    34. Chris Graffeo
    35. Nitin Agarwal
  • Complications and outcomes of posterior fossa decompression with duraplasty versus without duraplasty for pediatric patients with Chiari malformation type I and syringomyelia

    Journal of Neurosurgery: Pediatrics
    1. Hassan S.A. Akbari
    2. Alexander T. Yahanda
    3. Laurie L. Ackerman
    4. P. David Adelson
    5. Raheel Ahmed
    6. Gregory W. Albert
    7. Philipp R. Aldana
    8. Tord D. Alden
    9. Richard C.E. Anderson
    10. David F. Bauer
    11. Tammy Bethel-Anderson
    12. Karin Bierbrauer
    13. Douglas L. Brockmeyer
    14. Joshua J. Chern
    15. Daniel E. Couture
    16. David J. Daniels
    17. Brian J. Dlouhy
    18. Susan R. Durham
    19. Richard G. Ellenbogen
    20. Ramin Eskandari
    21. Herbert E. Fuchs
    22. Gerald A. Grant
    23. Patrick C. Graupman
    24. Stephanie Greene
    25. Jeffrey P. Greenfield
    26. Naina L. Gross
    27. Daniel J. Guillaume
    28. Todd C. Hankinson
    29. Gregory G. Heuer
    30. Mark Iantosca
    31. Bermans J. Iskandar
    32. Eric M. Jackson
    33. George I. Jallo
    34. James M. Johnston
    35. Bruce A. Kaufman
    36. Robert F. Keating
    37. Nicklaus R. Khan
    38. Mark D. Krieger
    39. Jeffrey R. Leonard
    40. Cormac O. Maher
    41. Francesco T. Mangano
    42. J. Gordon McComb
    43. Sean D. McEvoy
    44. Thanda Meehan
    45. Arnold H. Menezes
    46. Michael S. Muhlbauer
    47. Brent R. O'Neill
    48. Greg Olavarria
    49. John Ragheb
    50. Nathan R. Selden
    51. Manish N. Shah
    52. Chevis N. Shannon
    53. Joshua S. Shimony
    54. Matthew D. Smyth
    55. Scellig S.D. Stone
    56. Jennifer M. Strahle
    57. Mandeep S. Tamber
    58. James C. Torner
    59. Gerald F. Tuite
    60. Elizabeth C. Tyler-Kabara
    61. Scott D. Wait
    62. John C. Wellons
    63. William E. Whitehead
    64. Tae Sung Park
    65. David D. Limbrick
  • Effects of 24-hour versus night-float call schedules on the clinical and operative experiences of postgraduate year 2 and 3 neurosurgical residents

    Neurosurgical focus
    1. Stephen G. Bowden
    2. Dominic A. Siler
    3. Maryam N. Shahin
    4. David J. Mazur-Hart
    5. Daniel N. Munger
    6. Miner N. Ross
    7. Brannan E. O’Neill
    8. Caleb S. Nerison
    9. Michael Rothbaum
    10. Seunggu J. Han
    11. James M. Wright
    12. Josiah N. Orina
    13. Jesse L. Winer
    14. Nathan R. Selden
  • Measures of Intracranial Injury Size Do Not Improve Clinical Decision Making for Children With Mild Traumatic Brain Injuries and Intracranial Injuries

    Neurosurgery
    1. Jacob K. Greenberg
    2. Margaret A. Olsen
    3. Gabrielle W. Johnson
    4. Ranbir Ahluwalia
    5. Madelyn Hill
    6. Andrew T. Hale
    7. Ahmed Belal
    8. Shawyon Baygani
    9. Randi E. Foraker
    10. Christopher R. Carpenter
    11. Laurie L. Ackerman
    12. Corina Noje
    13. Eric M. Jackson
    14. Erin Burns
    15. Christina M. Sayama
    16. Nathan R. Selden
    17. Shobhan Vachhrajani
    18. Chevis N. Shannon
    19. Nathan Kuppermann
    20. David D. Limbrick
  • Neurosurgery residency and fellowship education in the United States

    Journal of neurosurgery
    1. Nathan R. Selden
    2. Nicholas M. Barbaro
    3. Daniel L. Barrow
    4. H. Hunt Batjer
    5. Charles L. Branch
    6. Kim J. Burchiel
    7. Richard W. Byrne
    8. Ralph G. Dacey
    9. Arthur L. Day
    10. Robert J. Dempsey
    11. Pamela Derstine
    12. Allan H. Friedman
    13. Steven L. Giannotta
    14. M. Sean Grady
    15. Griffith R. Harsh IV
    16. Robert E. Harbaugh
    17. Timothy B. Mapstone
    18. Karin M. Muraszko
    19. Thomas C. Origitano
    20. Katie O. Orrico
    21. A. John Popp
    22. Oren Sagher
    23. Warren R. Selman
    24. Gregg J. Zipfel
  • Optimizing the residency application process

    Journal of neurosurgery
    1. Robert Romano
    2. Debraj Mukherjee
    3. L. Madison Michael
    4. Judy Huang
    5. M. Harrison Snyder
    6. Vamsi P. Reddy
    7. Katherine Guzman
    8. Pamela Lane
    9. Jeremiah N. Johnson
    10. Nathan R. Selden
    11. Stacey Q. Wolfe
    12. Bernard R. Bendok
    13. Ketan Bulsara
    14. Lola Chambless
    15. Mark S. Dias
    16. Gerald A. Grant
    17. Costas Hadjipanayis
    18. Michael Haglund
    19. Jason Heth
    20. Brian L. Hoh
    21. Michael T. Lawton
    22. Jonathan P. Miller
    23. Peter Nakaji
    24. Clemens Schirmer
    25. Alejandro Spiotta
    26. Jamie Ullman
    27. Jamie Van Gompel
    28. Reza Yassari
    29. Gregory J. Zipfel
    30. Susan Panullo
    31. Kathy Guzman
    32. Stephen Bowden
    33. Lisa O'Brien
  • Socioeconomic and demographic factors in the diagnosis and treatment of Chiari malformation type I and syringomyelia

    Journal of Neurosurgery: Pediatrics
    1. Syed Hassan A. Akbari
    2. Asad A. Rizvi
    3. Travis S. CreveCoeur
    4. Rowland H. Han
    5. Jacob K. Greenberg
    6. James Torner
    7. Douglas L. Brockmeyer
    8. John C. Wellons
    9. Jeffrey R. Leonard
    10. Francesco T. Mangano
    11. James M. Johnston
    12. Manish N. Shah
    13. Bermans J. Iskandar
    14. Raheel Ahmed
    15. Gerald F. Tuite
    16. Bruce A. Kaufman
    17. David J. Daniels
    18. Eric M. Jackson
    19. Gerald A. Grant
    20. Alexander K. Powers
    21. Daniel E. Couture
    22. P. David Adelson
    23. Tord D. Alden
    24. Philipp R. Aldana
    25. Richard C.E. Anderson
    26. Nathan R. Selden
    27. Karin Bierbrauer
    28. William Boydston
    29. Joshua J. Chern
    30. William E. Whitehead
    31. Robert C. Dauser
    32. Richard G. Ellenbogen
    33. Jeffrey G. Ojemann
    34. Herbert E. Fuchs
    35. Daniel J. Guillaume
    36. Todd C. Hankinson
    37. Brent R. O’Neill
    38. Mark Iantosca
    39. W. Jerry Oakes
    40. Robert F. Keating
    41. Paul Klimo
    42. Michael S. Muhlbauer
    43. J. Gordon McComb
    44. Arnold H. Menezes
    45. Nickalus R. Khan
    46. Toba N. Niazi
    47. John Ragheb
    48. Chevis N. Shannon
    49. Jodi L. Smith
    50. Laurie L. Ackerman
    51. Andrew H. Jea
    52. Cormac O. Maher
    53. Prithvi Narayan
    54. Gregory W. Albert
    55. Scellig S.D. Stone
    56. Lissa C. Baird
    57. Naina L. Gross
    58. Susan R. Durham
    59. Stephanie Greene
    60. Robert C. McKinstry
    61. Joshua S. Shimony
    62. Jennifer M. Strahle
    63. Matthew D. Smyth
    64. Ralph G. Dacey
    65. Tae Sung Park
    66. David D. Limbrick
  • Speech-related auditory salience detection in the posterior superior temporal region

    NeuroImage
    1. Erik C. Brown
    2. Brittany Stedelin
    3. Seiji Koike
    4. Ahmed M. Raslan
    5. Nathan R. Selden
  • Technical challenges to anterior temporal lobectomy after laser interstitial thermal therapy for mesial temporal lobe epilepsy

    Journal of Neurosurgery: Pediatrics
    1. Molly E. Hubbard
    2. Nasser K. Yaghi
    3. Nathan R. Selden
  • The 2021 Neurosurgery Match

    World Neurosurgery
    1. Kathleen M. Mulligan
    2. Xuankang Pan
    3. Christina Gerges
    4. Nicholas M. Rabah
    5. Nathan R. Selden
    6. Stacey Q. Wolfe
    7. Christina Huang Wright
    8. James M. Wright
  • Continuous improvement in patient safety and quality in neurological surgery

    Journal of neurosurgery
    1. Marjorie C. Wang
    2. Frederick A. Boop
    3. Douglas Kondziolka
    4. Daniel K. Resnick
    5. Steven N. Kalkanis
    6. Elizabeth Koehnen
    7. Nathan R. Selden
    8. Carl B. Heilman
    9. Alex B. Valadka
    10. Kevin M. Cockroft
    11. John A. Wilson
    12. Richard G. Ellenbogen
    13. Anthony L. Asher
    14. Richard W. Byrne
    15. Paul J. Camarata
    16. Judy Huang
    17. John J. Knightly
    18. Elad I. Levy
    19. Russell R. Lonser
    20. E. Sander Connolly
    21. Fredric B. Meyer
    22. Linda M. Liau
  • Development and external validation of the KIIDS-TBI tool for managing children with mild traumatic brain injury and intracranial injuries

    Academic Emergency Medicine
    1. Jacob K. Greenberg
    2. Ranbir Ahluwalia
    3. Madelyn Hill
    4. Gabbie Johnson
    5. Andrew T. Hale
    6. Ahmed Belal
    7. Shawyon Baygani
    8. Margaret A. Olsen
    9. Randi E. Foraker
    10. Christopher R. Carpenter
    11. Yan Yan
    12. Laurie Ackerman
    13. Corina Noje
    14. Eric Jackson
    15. Erin Burns
    16. Christina M. Sayama
    17. Nathan R. Selden
    18. Shobhan Vachhrajani
    19. Chevis N. Shannon
    20. Nathan Kuppermann
    21. David D. Limbrick
  • Dural augmentation approaches and complication rates after posterior fossa decompression for Chiari I malformation and syringomyelia

    Journal of Neurosurgery: Pediatrics
    1. Alexander T. Yahanda
    2. P. David Adelson
    3. S. Hassan
    4. Gregory W. Albert
    5. Philipp R. Aldana
    6. Tord D. Alden
    7. Richard C.E. Anderson
    8. David F. Bauer
    9. Tammy Bethel-Anderson
    10. Douglas L. Brockmeyer
    11. Joshua J. Chern
    12. Daniel E. Couture
    13. David J. Daniels
    14. Brian J. Dlouhy
    15. Susan R. Durham
    16. Richard G. Ellenbogen
    17. Ramin Eskandari
    18. Timothy M. George
    19. Gerald A. Grant
    20. Patrick C. Graupman
    21. Stephanie Greene
    22. Jeffrey P. Greenfield
    23. Naina L. Gross
    24. Daniel J. Guillaume
    25. Todd C. Hankinson
    26. Gregory G. Heuer
    27. Mark Iantosca
    28. Bermans J. Iskandar
    29. Eric M. Jackson
    30. James M. Johnston
    31. Robert F. Keating
    32. Mark D. Krieger
    33. Jeffrey R. Leonard
    34. Cormac O. Maher
    35. Francesco T. Mangano
    36. J. Gordon McComb
    37. Sean D. McEvoy
    38. Thanda Meehan
    39. Arnold H. Menezes
    40. Brent R. O'Neill
    41. Greg Olavarria
    42. John Ragheb
    43. Nathan R. Selden
    44. Manish N. Shah
    45. Chevis N. Shannon
    46. Joshua S. Shimony
    47. Matthew D. Smyth
    48. Scellig S.D. Stone
    49. Jennifer M. Strahle
    50. James C. Torner
    51. Gerald F. Tuite
    52. Scott D. Wait
    53. John C. Wellons
    54. William E. Whitehead
    55. Tae Sung Park
    56. David D. Limbrick