| Name | Track | Diplomate Status | Certified Date | Expires |
|---|---|---|---|---|
| Bruce Sigsbee | CNP | Diplomate | 11/22/1986 | Never |
| Maurice L. Silver | EEG | Diplomate | 12/31/1953 | Never |
| Mary T. Silvia | EM | Diplomate | 11/12/2011 | 12/31/2031 |
| Robert T. Simkins | CNP | Diplomate | 12/7/1985 | Never |
| Jerald H. Simmons | CNP | Diplomate | 12/31/1995 | Never |
| Mirela V. Simon | NIOM | Diplomate | 10/28/2007 | 12/31/2027 |
| Donald J. Simons | EEG | Diplomate | 12/31/1952 | Never |
| James P. Simsarian | EEG | Diplomate | 12/31/1975 | Never |
| Lafayette Singleton | EM | Diplomate | 11/19/2022 | 12/31/2032 |
| Saurabh R. Sinha, M.D., Ph.D. | NIOM | Diplomate | 5/22/2010 | 12/31/2030 |
| Joseph Sirven | CNP | Diplomate | 9/13/1997 | Never |
| Michael A. Sisk | EEG | Diplomate | 12/31/1976 | Never |
| Adithya Sivaraju | EM | Diplomate | 6/18/2022 | 12/31/2032 |
| Adithya Sivaraju | CC-EEG | Diplomate | 6/18/2022 | 12/31/2032 |
| Raj Rajvihar Sivaraman Nair | EM | International | 6/12/2021 | 12/31/2031 |
| A. Ganesa Sivasubramaniam | CNP | Diplomate | 9/13/1997 | 12/31/2007 |
| Harold Skaggs, Jr. | EEG | Diplomate | 12/31/1972 | Never |
| Stanley A. Skinner | CNP | Diplomate | 4/16/1988 | Never |
| Karen L. Skjei | EM | Diplomate | 11/2/2013 | 12/31/2023 |
| Charles Skomer | CNP | Diplomate | 4/27/1985 | Never |
| Clare E. Skora | EM | Diplomate | 11/19/2022 | 12/31/2032 |
| Jeremy Slater | CNP | Diplomate | 9/13/1997 | Never |
| Robert Slater | CNP | Diplomate | 12/31/1980 | Never |
| Michael Slattery | EM | Diplomate | 10/3/1998 | Never |
| Michael Sluss | CNP | Diplomate | 11/22/1986 | Never |
|
1641 Certificants
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