Disclaimer: Certification by the American Board of Sleep Medicine does not in itself confer authority to practice medicine beyond the authority granted by a state that issues a license to practice medicine.
The American Board of Sleep Medicine throughout its history offered non-physicians, specifically PhDs, the opportunity to sit for its examination. Many PhD candidates over the years successfully passed the examination and received the designation "diplomate of the American Board of Sleep Medicine." This designation must not be interpreted to mean that the American Board of Sleep Medicine designation supersedes any state or federal law with regard to medical license requirements for the treatment of patients. Those who have successfully passed the exam MUST be careful not to practice medicine outside of their legal limits.
| Name | City | State | Specialty | Certified |
| Gracia Louis Nabhane, M. D. | Jefferson City | MO | Pulmonology | 9/21/2005 |
| Frederick J. Nachtwey, M.D. | San Pablo | CA | Pulmonology | 4/28/1997 |
| Daya Nadarajah, M.D. | Mountain Lakes | NJ | Pulmonology | 4/8/2002 |
| Rashid Nadeem, M.B., B.S. | Johnston | PA | Pulmonology | 4/16/2003 |
| Mangala A. Nadkarni, M.D. | Edison | NJ | Neurophysiology | 4/17/2000 |
| Benjamin J. Nager, M.D. | Crystal Lake | IL | Neurology | 4/17/2000 |
| Keith J. Nagle, M.D. | Burlington | VT | Neurology | 4/11/1999 |
| Anas Nahhas, M.D. | Blue Island | IL | Pulmonology | 4/22/1996 |
| Jeffrey Nahmias, M.D. | Newark | NJ | Pulmonology | 6/26/1987 |
| Karen H. Naifeh, Ph.D. | Physiology | 6/26/1987 | ||
| Anita Naik, D.O. | Bel Air | MD | Internal Medicine | 9/21/2005 |
| Ali Kadhim Najar, M.D. | Dearborn | MI | Pulmonology | 9/19/2006 |
| Waleed S. Najeeb, M.D. | Mequon | WI | Pulmonology | 4/23/2001 |
| Mamoun I. Najjar, M. D. | Cumberland | RI | Internal Medicine | 3/22/2005 |
| Muhammad Najjar, M.D. | Darien | IL | Neurology | 3/22/2005 |
| M. Maher Najjar, M.D. | Lisle | IL | Pulmonology | 3/26/2004 |
| Usha Nalamalapu, M.D. | Falmouth | ME | Pulmonology | 4/8/2002 |
| Jhansi Rani Nalamati, M.D. | Bronx | NY | Pulmonology | 4/16/2003 |
| Krishna R. Nalluri, M.D. | Gulfport | MS | Neurology | 4/22/1996 |
| Andrew M. Namen, M.D. | Jacksonville | FL | Pulmonology | 4/16/2003 |
| Madhavan Marangatt Nampoothiri, M.D. | Temple | TX | Pulmonology | 3/25/2004 |
| Rama Nandipati, M.D. | Merced | CA | Pulmonology | 3/22/2005 |
| Syed Kamal Naqvi, M.D. | Plano | TX | Pediatric Pulmonology | 9/20/2005 |
| Winston Richard Nara, M.B., B.S. | Indianapolis | IN | Pulmonology | 9/21/2005 |
| Shakti Narain, M.D. | Leesburg | FL | Pulmonology | 4/28/1997 |
| Rajeev Narang, M.D. | Corpus Christi | TX | Pulmonology | 4/28/1997 |
| Mangala Narasimham, D.O. | Sleep Hollow | NY | Pulmonology | 9/19/2006 |
| Eyad Nashawati, M.D. | Canton | OH | Pulmonology | 4/17/2003 |
| Nabeela Nasir, M.B., B.S. | Kildeer | IL | Neurology | 3/22/2005 |
| Bassam Hani Nasr, M.D. | Port Huron | MI | Gastroenterology | 3/26/2004 |
| Peter Anton Nassar, M.D. | Albany | NY | Internal Medicine | 9/21/2005 |
| Fady F. Nassif, M.D. | Simpsonville | SC | Pulmonology | 3/25/2004 |
| Ganesh Cuddalore Natarajan, M.D. | Ridgefield | CT | Pulmonology | 3/22/2005 |
| Avery H. Nathanson, M.D. | Toledo | OH | Pulmonology | 4/8/2002 |
| Sidney D. Nau, Ph.D. | St. Louis | MO | Psychology | 4/18/1988 |
| Shiv U. Navada, M.D. | Clarksburg | WV | Clinical Neurophysiology | 4/17/2000 |
| Usha G. Nayak, M.B., B.S. | Mcdonough | GA | Pulmonology | 3/23/2005 |
| Muhammad A. Nayer, M.D. | Bullhead City | AZ | Neurology | 4/6/1998 |
| Michael W. Naylor, M.D. | Chicago | IL | Psychiatry | 4/23/1990 |
| John K. Naylor, M.D. | Spokane | WA | Pulmonology | 4/8/2002 |
| Shoab Ahmed Nazir, M.D. | Little Rock | AR | Pulmonology | 9/21/2005 |
| George B. Neal, M.D. | Manchester | NH | Neurology | 4/25/1994 |
| Luana Ionela Nedita, M.D. | Internal Medicine | 3/25/2004 | ||
| Michael J. Neeb, Ph.D. | Toledo | OH | Psychology | 4/24/1995 |
| Sarah E. Neely, M.D. | Chicago | IL | Neurology | 4/23/1990 |
| Kirk Nelson, M.D. | Richmond | VA | Psychiatry | 4/18/1988 |
| Jacalyn A. Nelson, M.D. | Danville | VA | Neurology | 4/28/1997 |
| Patricia L. Nelson, M.D. | Salt Lake City | UT | Pulmonology | 4/6/1998 |
| Michael Eugene Nelson, M.D. | Mission Hills | KS | Pulmonology | 4/17/2003 |
| Sajjan K. Nemani, M.D. | Centralia | IL | Neurology | 4/17/2000 |
| Soroor Nemat, M.D. | Salem | VA | Internal Medicine | 9/19/2006 |
| Ravi Rayjose Nemivant, M.D. | Forest Park | IL | Pulmonology | 9/21/2005 |
| Jacqueline Nemni, M.D. | Guelph | ON | Pulmonology | 4/23/2001 |
| Daniel J. Nepomuceno, M.D. | Barrington | IL | Pulmonology | 4/17/2000 |
| Jeffery R. Neu, M.D. | Williamsville | NY | Pulmonology | 4/6/1998 |
| David Neubauer, M.D. | Baltimore | MD | Psychiatry | 6/26/1987 |
| David A. Neumeyer, M.D. | Wayland | MA | Pulmonology | 4/17/2000 |
| Surendra Kumar Nevatia, M.D. | Queensbury | NY | Pulmonology | 4/16/2003 |
| Michael Lee Nevins, M.D. | Sammamish | WA | Pulmonology | 4/16/2003 |
| John A. Newcomer, M.D. | Colorado Springs | CO | Pulmonology | 3/25/2004 |
| Stephen L. Newman, M.D. | Brick | NJ | Pulmonology | 4/22/1996 |
| Gershon C. Ney, M.D. | Flushing | NY | Neurology | 4/24/1995 |
| Thomas C. Neylan, M.D. | San Francisco | CA | Psychiatry | 4/24/1989 |
| Pakkay Ngai, M.D. | New York | NY | Pediatric Pulmonology | 3/25/2004 |
| Thuy T. Ngo, M.D. | Columbia | SC | Neurology | 4/11/1999 |
| Trung Vincent Nguyen, D.O. | Fountain Valley | CA | Internal Medicine | 9/21/2005 |
| P. Lynn Nichols II, M.D. | Knoxville | TN | Pulmonology | 3/23/2005 |
| Cynthia D. Nichols, Ph.D. | Traverse City | MI | Psychology | 4/6/1992 |
| David R. Nichols, M.D. | Fort Smith | AR | Pulmonology | 3/25/2004 |
| Dennis H. Nicholson, M.D. | Pomona | CA | Pulmonology | 4/24/1989 |
| Keith Alan Niggemyer, M.D. | Pittsburgh | PA | Pulmonology | 9/21/2005 |
| Jakdej Nikomborirak, M.D. | Sequim | WA | Pulmonology | 4/8/2002 |
| German Nino-Murcia, M.D. | DECEASED | Psychiatry | 3/4/1982 | |
| Mitra Niroumand, M.D. | Toronto | ON | Respirology | 3/26/2004 |
| Takashi Nishida, M.D. | Willowbrook | IL | Neurology | 4/8/2002 |
| James N. Nishio, M.D. | Carmichael | CA | Pulmonology | 4/23/1990 |
| Sigrid Noack, M.D. | Bangor | ME | Internal Medicine | 9/19/2006 |
| Catherine K. Nobel, M.D. | Los Angeles | CA | Pulmonology | 4/16/2003 |
| Eric A. Nofzinger, M.D. | Pittsburgh | PA | Psychiatry | 4/6/1992 |
| Bruce Nolan, M.D. | Miami | FL | Neurology | 6/26/1987 |
| Michael S. Nolledo, M.D. | New Brunswick | NJ | Pulmonology | 4/23/2001 |
| Shaheen P. Noorani, M.D. | Dalton | GA | Pulmonology | 3/25/2004 |
| Carla Rae Nordstrom, M.D. | West Lebanon | NH | Pulmonology | 4/16/2003 |
| Daniel Norman, M.D. | San Diego | CA | Internal Medicine | 3/23/2005 |
| Bogdan L. Nowakowski, M.D. | Gonzales | LA | Pulmonology | 3/25/2004 |
| Peter D. Nowell, M.D. | Lebanon | NH | Psychiatry | 4/22/1996 |
| Thomas John Nuckton, M.D. | San Francisco | CA | Pediatrics | 4/16/2003 |
| Thomas Rone Nugent, M.D. | Cherry Hill | NJ | Pulmonology | 4/17/2003 |
| Angel A. Nunez, M.D. | Panama City | FL | Pulmonology | 9/21/2005 |
| Richard A. Nusser, M.D. | Oakland | CA | Pulmonology | 4/18/1988 |
