| 1 | | Mark Levine, M.D. | N/A | 0 | Natl Inst of Diabetes Dgstv & Kidn | Bethesda | MD |
| 2 | | Michael Levine, M.D. | Longcope | 1976 | Children's Hospital of Philadelphia and UPenn | Philadelphia | PA |
| 3 | | Stuart Levine, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 4 | | Mark Levis, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 5 | | Hyam Levitsky, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 6 | | Roy Levitt, M.D. | N/A | 0 | Genaera Corporation | Plymouth Meeting | PA |
| 7 | | Andrew Levy, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 8 | | J. Licht, M.D. | N/A | 0 | | Yakima | WA |
| 9 | | Lawrence Lichtenstein, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 10 | | Richard Light, M.D. | N/A | 0 | Vanderbilt University | Nashville | TN |
| 11 | | David Lim, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 12 | | David Lim, M.D., Ph.D. | Thayer | 2003 | Castlight Health | San Francisco | CA |
| 13 | | Joao Lima, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 14 | | Suah Limb, M.D. | Thayer | 2000 | FDA | Silver Spring | MD |
| 15 | | Aline Lin, Other Masters | Barker | 2015 | Johns Hopkins | Towson | MD |
| 16 | | Evan Lipson, M.D. | Janeway | 2005 | Johns Hopkins University SOM | Baltimore | MD |
| 17 | | Evan Lipson, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 18 | | Loren Lipson, M.D. | N/A | 0 | Univ of Sthrn California Med School | South Pasadena | CA |
| 19 | | Brian Litt, M.D. | N/A | 0 | Hosp of the Univ of Pennsylvania | Philadelphia | PA |
| 20 | | Marc Litt, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 21 | | Gigi Liu, | Longcope | 2011 | JHH | Baltimore | MD |
| 22 | | Julie Livingston, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Paoli | PA |
| 23 | | Thomas Lloyd, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 24 | | Timothy Loo, M.D. | N/A | 0 | Beth Israel Deaconess Medical Ctr | Boston | MA |
| 25 | | Kara Loubser, M.D. | Janeway | 2009 | Mayo Clinic | Rochester | MN |
| 26 | | Rahul Loungani, M.D. | Longcope | 2014 | Duke University Hospital | Durham | NC |
| 27 | | Dylan Lovin, M.D. | Janeway | 2014 | UTSW | Dallas | TX |
| 28 | | Clifford Lowell, M.D. | N/A | 0 | Univ of California at San Francisco | San Francisco | CA |
| 29 | | Stuart Lubinski, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Rydal | PA |
| 30 | | Robert Luke, M.D. | N/A | 0 | Jacksonville Heart Center | Jacksonville | FL |
| 31 | | William Lukensmeyer, M.D. | N/A | 0 | | Los Gatos | CA |
| 32 | | Michael Lux, M.D. | N/A | 0 | Columbia Univ Col of Phy & Sur | Springfield | NJ |
| 33 | | Susan MacDonald, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 34 | | Willis Maddrey, M.D. | N/A | 0 | UT Southwestern Medical Center | Dallas | TX |
| 35 | | David Madoff, M.D. | N/A | 0 | Good Samaritan Hospital | Baltimore | MD |
| 36 | | Maulik Majmudar, M.D. | Longcope | 2005 | Brigham and Women's Hospital | Boston | MA |
| 37 | | David Majure, M.D. | N/A | 0 | Univ of California at San Francisco | San Francisco | CA |
| 38 | | Rupal Malani, M.D. | Longcope | 2005 | McKinsey & Company | Cleveland | OH |
| 39 | | Adnan Malik, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 40 | | Patrick Malloy, M.D. | N/A | 0 | Jefferson Radiology | Farmington | CT |
| 41 | | Jennifer Mammen, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 42 | | Andrew mammen, M.D., Ph.D. | Longcope | 2000 | Johns Hopkins | Baltimore | MD |
| 43 | | Yukari Manabe, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 44 | | Raoul Manalac, M.D. | Barker | 2011 | Johns Hopkins Hospital | | |
| 45 | | Susan Mani, M.D. | N/A | 0 | Danbury Hospital | Danbury | CT |
| 46 | | Lisa Maragakis, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 47 | | Eduardo Marban, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 48 | | Victor Marder, M.D. | N/A | 0 | David Geffen Schl of Medcl at UCLA | Los Angeles | CA |
| 49 | | Simeon Margolis, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 50 | | Dorothy Margolskee, M.D. | N/A | 0 | Prospects Ventures Partners | Palo Alto | CA |
| 51 | | Timothy Markman, M.D. | Barker | 2014 | University of Pennsylvania | Philadelphia | PA |
| 52 | | Robert Marshall, M.D. | Janeway | 1993 | Cardiocare, LLC | Chevy Chase | MD |
| 53 | | Robert Marshall, M.D. | N/A | 0 | Georgetown University Hospital | Washington | DC |
| 54 | | Don Martin, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 55 | | Nisa Maruthur, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 56 | | Steven Mast, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 57 | | Philip Masters, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 58 | | Philip Masters, M.D. | Janeway | 1989 | American College of Physicians | Philadelphia | PA |
| 59 | | Hansie Mathelier, M.D. | Thayer | 2005 | University of Pennsylvania | Philadelphia | PA |
| 60 | | Hansie Mathelier, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 61 | | Simon Mathews, M.D. | Janeway | 2011 | The Johns Hopkins Hospital | Baltimore | MD |
| 62 | | Wilbur Mattison, M.D. | N/A | 0 | The Menlo Medical Clinic | | |
| 63 | | William Maxson, M.D. | N/A | 0 | | Lexington | KY |
| 64 | | Nikhilesh Mazumder, M.D. | Longcope | 2014 | Northwestern University | Chicago | IL |
| 65 | | Justin McArthur, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 66 | | David McCarron, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 67 | | Micheline McCarthy, M.D. | N/A | 0 | University of Miami Schl of Medcn | Miami | FL |
| 68 | | Robert McCarthy, M.D. | N/A | 0 | | Baltimore | MD |
| 69 | | Matthew McConnell, M.D. | Barker | 2012 | Johns Hopkins Hospital | Baltimore | MD |
| 70 | | Rachel McCormick, M.D. | N/A | 0 | Yale University | New Haven | CT |
| 71 | | Michael McDevitt, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 72 | | Robert McDivitt, M.D. | N/A | 0 | Washington Univ School of Medicine | | |
| 73 | | David McDougal, M.D. | N/A | 0 | Washington Univ School of Medicine | Saint Louis | MO |
| 74 | | Mark McGaughey, M.D. | N/A | 0 | Iowa Heart Center | Des Moines | IA |
| 75 | | Donald McGee, M.D. | N/A | 0 | | | |
| 76 | | Laura McGirt, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 77 | | Maura McGuire, M.D. | N/A | 0 | Johns Hopkins Community Physicians | Baltimore | MD |
| 78 | | Maura McGuire, M.D. | Longcope | 1983 | Johns Hopkins Community Physicians | Baltimore | MD |
| 79 | | Julia McHugh, M.D., Ph.D. | Janeway | 2012 | JHH | Baltimore | MD |
| 80 | | Charlotte McKee, M.D. | N/A | 0 | Johns Hopkins School of Medicine | Baltimore | MD |
| 81 | | Anne McKusick, M.D. | N/A | 0 | Johns Hopkins School of Medicine | | |
| 82 | | Edward McMillan, M.D. | N/A | 0 | Johns Hopkins Hospital | Baltimore | MD |
| 83 | | Stephen McPhee, M.D. | N/A | 0 | Univ of California at San Francisco | San Francisco | CA |
| 84 | | John McPherson, M.D. | Thayer | 1993 | Vanderbilt University Medical Center | Nashville | TN |
| 85 | | Allen Meek, M.D. | N/A | 1974 | Provision Medical Group | Knoxville | TN |
| 86 | | David Mehlman, M.D. | N/A | 0 | | Chicago | IL |
| 87 | | Glenn Meininger, M.D. | N/A | 0 | Johns Hopkins Hospital | | |
| 88 | | Marco Mejia, M.D. | N/A | 0 | Annapolis Cardiology Consult. LLC | Annapolis | MD |
| 89 | | Christopher Melani, M.D. | Thayer | 2011 | Johns Hopkins Hospital | Baltimore | MD |
| 90 | | Sherman Mellinkoff, M.D. | N/A | 0 | UCLA School of Medicine | Los Angeles | CA |
| 91 | | Marvin Mengel, M.D. | N/A | 0 | Orlando Regional Health Care System | Orlando | FL |
| 92 | | Dimitri Merine, M.D. | N/A | 0 | Sinai Hospital of Baltimore | Baltimore | MD |
| 93 | | Eric Merrifield, M.D. | N/A | 0 | University of Washington | Seattle | WA |
| 94 | | Christopher Merritt, M.D. | N/A | 1967 | Retired | | |
| 95 | | James Mersey, M.D. | N/A | 0 | Bay West Endocrinology | Baltimore | MD |
| 96 | | Onita Metzler, | | 1981 | Hartsock Ltd. | Helvoirt | NB |
| 97 | | Joseph Meyer, M.D. | Janeway | 2015 | Johns Hopkins Hospital | Baltimore | MD |
| 98 | | Robert Mich, M.D. | N/A | 0 | Cardiology Diagnostic Associates | New Providence | NJ |
| 99 | | John Michael, M.D. | N/A | 0 | University of Utah School of MD | Salt Lake City | UT |
| 100 | | Theresa Michele, M.D. | N/A | 0 | Johns Hopkins School of Medicine | East Brunswick | NJ |