| Name - First (Maiden) Last | Credential | Cert Number | Issue Date | Expiration Date |
|---|---|---|---|---|
| Oneke-Keire Weaver | R. EEG T. | 9138 | 2024-08-04 | 2029-12-31 |
| Onesti Janniere | R. EEG T. | 7323 | 2019-10-24 | 2029-12-31 |
| Ons Souissi | CNIM | 5767 | 2025-03-14 | 2030-12-31 |
| Opal Workman | R. EEG T. | 3129 | 1998-01-24 | 2028-12-31 |
| Orlando Lugo | CNIM | 3389 | 2016-03-19 | 2021-12-31 |
| Orlando Miller | R. EEG T. | 7483 | 2020-03-06 | 2025-12-31 |
| ORRENE SCOTT | R. EEG T. | 2392 | 1992-08-16 | 2023-12-31 |
| Osama Hanna | R. EEG T. | 3530 | 2002-05-18 | 2022-12-31 |
| Osama Hanna | CNIM | 735 | 2004-05-01 | 2029-12-31 |
| Osama Shams | CNIM | 4065 | 2018-05-13 | 2028-12-31 |
| Oscar Aldana | R. EEG T. | 4653 | 2011-02-06 | 2026-12-31 |
| Oscar Padilla | CNIM | 3338 | 2015-10-31 | 2025-12-31 |
| Oscar Aldana | CLTM | 480 | 2020-07-02 | 2025-12-31 |
| Oscar Rojo | R. EEG T. | 8786 | 2023-05-05 | 2028-12-31 |
| Oshia Slayden | R. EEG T. | 5715 | 2015-10-31 | 2025-12-31 |
| Oshia Slayden | CLTM | 346 | 2017-11-21 | 2027-12-31 |
| Osmani R. Cruz | R. EEG T. | 3527 | 2002-05-18 | 2022-12-31 |
| Osmani R. Cruz | R. EP T. | 1387 | 2014-09-20 | 2019-12-31 |
| Ossama Gaid | R. EEG T. | 9209 | 2024-10-12 | 2029-12-31 |
| Otakhon Matchanov | R. EEG T. | 6084 | 2017-01-28 | 2022-12-31 |
| Otakhon Matchanov | CNIM | 4589 | 2020-06-22 | 2025-12-31 |
| Otto Trapage | R. EEG T. | 8310 | 2022-02-19 | 2027-12-31 |
| Ovie C. Smith | CNIM | 505 | 2002-05-04 | 2027-12-31 |
| Ovsanna Zakarian | R. EEG T. | 3360 | 2000-06-11 | 2025-12-31 |
| Ovsanna Zakarian | R. EP T. | 727 | 1999-08-15 | 2009-12-31 |