| Name | City | Speciality | |
---|
| Jansson, Nicolle | Yaphank | | View |
| Janvier, David | Elmont | | View |
| Jung, Robert | Wantagh | | View |
| Karr, Beth | Wantagh | | View |
| Kazandjian-Ranaldo, Marta | Rockville Centre | | View |
| Keckeisen, Sandra | East Islip | | View |
| Keilitz - Williamson, Kathleen | Bay Shore | | View |
| Kelly, William | Bayside | | View |
| Kennedy, Mary | Freeport | | View |
| Keogh, Susan | Bellmore | Weight Loss, Sports Conditioning, Endurance Training | View |
| Khoury, Elizabeth | West Islip | | View |
| Klemm, Samantha | Bethpage | | View |
| Knoblach, Diane | Sayville | | View |
| Knuppel, Angelica | Selden | | View |
| Krausz, Esther | Woodmere | | View |
| Kreitzer, Veronica | Setauket | | View |
| Kruger, Christine | Bayside | | View |
| Kunda, Richard | Far Rockaway | | View |
| La Sota, Jannette | Boca Raton | Weight Loss, Special Population | View |
| Lange, Vincent | North Babylon | | View |
| Lanwes, Mary | huntington Station | | View |
| Larkin, Kara | Lindenhurst | | View |
| Larsen, Joan | patchogue | | View |
| Lawrence, Arlene | Bayport | | View |
| Lawrence, Evan | Brooklyn | Weight Loss, Sports Conditioning, Special Population | View |
| Leach, Theresa | Islip | | View |
| Lee, Michael | Bellmore | | View |
| Lee, Sandra | BELLMORE | | View |
| Lee, Stephen | Holtsville | | View |
| Lee, Thomas | Port Washington | | View |
| Lefkowtz, Steven | Plainview | | View |
| Lehmann, Gregg | Elmont | | View |
| Lennon, Matthew | Hampton Bays | | View |
| Lentini, Andrew | Wantagh | Weight Loss, Sports Conditioning, Special Population, Endurance Training, Post Rehabilitation | View |
| Leone, Christina | Massapequa | | View |
| Leone, Joseph | Farmingdale | | View |
| Levi, Lori | Sea Cliff | | View |
| Levine, Jodi | Wading River | | View |
| Levitan, Jodi | Oceanside | | View |
| Levy, Tracy | North Bellmore | | View |
| Lezama, Simonette | Chesapeake | | View |
| Livoti, Victor | Massapequa Park | | View |
| Lloyd, Fidel | | | View |
| Lohmer, Emily | Blue Point | | View |
| Loiacano, Denise | Massapequa Park | Weight Loss, Sports Conditioning | View |
| Loria, Melinda | Boca Raton | | View |
| Macchia, Ilene | Syosset | | View |
| Magurno, Natalie | Carle Place | | View |
| Malerba, Christopher | Middle Island | Weight Loss, Sports Conditioning, Special Population, Post Rehabilitation | View |
| Mamarella, Lenore | Commack | | View |