1: 1. Richard Webber - The original Chief of Surgery at Grey Sloan Memorial Hospital. 2. Preston Burke - He held the position before leaving the hospital. 3. Derek Shepherd - Known for his expertise as a neurosurgeon and Chief of Surgery.

2: 4. Owen Hunt - Lead the hospital as Chief of Surgery after Derek. 5. April Kepner - Briefly served as interim Chief of Surgery in the series. 6. Miranda Bailey - A fan-favorite character who became Chief of Surgery.

3: 7. Teddy Altman - Took over as Chief of Surgery during challenging times. 8. Jackson Avery - Stepped up as Chief of Surgery to continue the legacy. 9. Meredith Grey - The protagonist who eventually becomes Chief of Surgery.

4: 10. Megan Hunt - Briefly assumes the role of Chief of Surgery in the series. 11. Ellis Grey - A pioneer in the field who also served as Chief of Surgery. 12. Addison Montgomery - Was appointed Chief of Surgery at a different hospital.

5: 13. Erica Hahn - A skilled surgeon who briefly held the position of Chief of Surgery. 14. Arizona Robbins - Served as interim Co-Chief of Surgery alongside Miranda. 15. Callie Torres - A talented orthopedic surgeon who also served as Chief of Surgery.

6: 16. Alana Cahill - A consultant who served as Chief of Surgery temporarily. 17. Eliza Minnick - Appointed as Chief of Surgery to overhaul the hospital's methods. 18. Catherine Fox - Known for her business acumen and brief stint as Chief of Surgery.

7: 19. Tom Koracick - A skilled surgeon who served as interim Chief of Surgery. 20. Alex Karev - Briefly serves as Chief of Surgery after a series of events. 21. Maggie Pierce - A brilliant cardiothoracic surgeon who has also acted as Chief of Surgery.

8: 22. Keith Gardner - A temporary Chief of Surgery before Bailey resumes her role. 23. Carina DeLuca - A talented OB/GYN surgeon who has yet to be Chief of Surgery. 24. Atticus Lincoln - Another surgeon who has not yet taken on the role of Chief of Surgery.

9: 25. Ellis Shepherd - Another character in the series who became Chief of Surgery. 26. Leopold - A patient who briefly holds the position of Chief of Surgery. 27. Nicole Herman - The head of fetal surgery who served as temporary Chief of Surgery.

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