47. Thomas Nasca Executive director and CEO, Accreditation Council for Graduate Medical Education, Chicago Back to The 50 Most Powerful Physician Executives, 2009

1. Carolyn Clancy	2. Christine Cassel	3. Mark Chassin	4. Donald Berwick
5. Stephen Newman	6. Emad Rizk	7. Jonathan Perlin	8. Gary Gottlieb
9. Robert Wah	10. William Jessee	11. Rodney Hochman	12. David Blumenthal
13. Dexanne Clohan	14. David Shulkin	15. Lanny Copeland	16. Gary Kaplan
17. David Pate	18. Ron Anderson	19. Prem Reddy	20. J. James Rohack
21. Harry Jacobson	22. Georges Benjamin	23. Robert Wachter	24. Daniel Palestrant
25. John Koster	26. Brent James	27. Edward Murphy	28. Patrick Quinlan
29. Barbara Paul	30. Paul Tang	31. Barry Silbaugh	32. Mark Leavitt
33. Risa Lavizzo-Mourey	34. Molly Coye	35. Reed Tuckson	36. John Cochran
37. John Halamka	38. William Bria	39. Darrell Kirch	40. Michael Maves
41. Troyen Brennan	42. Herbert Pardes	43. Steven Safyer	44. Melinda Estes
45. Paul Whelton	46. Jack Lewin	47. Thomas Nasca	48. Harvey Fineberg
49. Adam Singer	50. Ronald Greeno