| North Shore-Lij Medical PC | Staten Island | 6,440 |
| New York University | New York | 6,134 |
| Icahn School of Medicine at Mount Sinai | New York | 2,843 |
| Montefiore Medical Center | Bronx | 2,820 |
| Trustees of Columbia University in the City of New York | New York | 2,296 |
| Weill Medical College of Cornell | New York | 2,051 |
| Physician Affiliate Group of New York PC | New York | 1,225 |
| Rochester General Hospital | Rochester | 1,182 |
| Albany Medical College | Albany | 1,056 |
| Optum Medical Care PC | Poughkeepsie | 1,010 |
| North Shore - Lij Anesthesiology, PC | Uniondale | 1,003 |
| University of Rochester | Rochester | 973 |
| Westchester Medical Center Advanced Physician Services PC | Valhalla | 897 |
| Mary Imogene Bassett Hospital | Sidney | 763 |
| Chs Physician Partners PC | Roslyn | 743 |
| The Unity Hospital of Rochester | Rochester | 736 |
| City Medical of Upper East Side PLLC | Astoria | 658 |
| Kings Physician Services PC | Brooklyn | 648 |
| Spear Physical and Occupational Therapy, LLC | New York | 593 |
| New York City Health and Hospitals Corporation | Brooklyn | 571 |
| Sports Physical Therapy Occupational Therapy and Rehabilitation Servic | Rego Park | 527 |
| Western New York Medical Practice PC | Fairport | 524 |
| General Physician PC | Amherst | 501 |
| Professional Occupational and Physical Therapy, PLLC | Whitestone | 495 |
| Roswell Park Cancer Institute | Buffalo | 488 |
| St. Peter's Health Partners Medical Associates, P.C. | Troy | 487 |
| North Shore Hematology Oncology Associates PC | Port Jefferson Station | 479 |
| United Health Services Hospitals, Inc. | Vestal | 477 |
| Metro Physical Occupational Speech Massage Therapy and Acupuncture Pll | Kew Gardens | 452 |
| North American Partners in Anesthesia LLP | Dunkirk | 439 |
| ENT and Allergy Associates LLP | Forest Hills | 432 |
| East Post Road Medical Services PC | White Plains | 429 |
| Stony Brook Internists University Faculty Practice Corporation | Stony Brook | 428 |
| Fpa Hospital Based | New York | 425 |
| Westchester Medical Group, P.C | White Plains | 415 |
| Highland Hospital of Rochester | Lakeville | 411 |
| New York Queens Medicine and Surgery, P.C. | Whitestone | 401 |
| Wellnow Urgent Care, P.C. | Batavia | 392 |
| North Shore Lij Urgent Care PC | Plainview | 390 |
| White Plains Physician Services PC | Harrison | 386 |
| Interfaith Professional Physician Services PC | Brooklyn | 384 |
| St Josephs Medical PC | Syracuse | 382 |
| Mskcc Surgery Group | New York | 369 |
| Community Care Physicians PLLC | Latham | 368 |
| Crystal Run Healthcare Physicians LLP | Middletown | 362 |
| Champlain Valley Physicians Hospital Medical Center | Plattsburgh | 361 |
| Saratoga Hospital | Saratoga Springs | 356 |
| Samaritan Medical Services PC | West Islip | 354 |
| U of R Anesthesiology Group | Rochester | 347 |
| Bronxcare Health System | Bronx | 341 |
| Mvhs Inc | Utica | 334 |
| North Shore Medical Group of the Mount Sinai School of Medicine | Brooklyn | 331 |
| Erie County Medical Center Corporation | Buffalo | 319 |
| Icahn School of Medicine at Mount Sinai | Elmhurst | 316 |
| Rb Physical and Occupational Therapy, PLLC | Brooklyn | 304 |
| Advantagecare Physicians PC | Staten Island | 303 |
| Memorial Anesthesiology Group | New York | 302 |
| Select PT, OT and Slp Rehabilitation Ny, PLLC | Hudson | 301 |
| Department of Medicine Medical Serv Grp at Suny Hlth Sci Ctr Syr in | Syracuse | 282 |
| Cayuga Medical Associates PC | Ithaca | 282 |
| United Memorial Medical Center | Batavia | 279 |
| St Peters Hospital of the City of Albany | Albany | 271 |
| Empire State Radiology P C | Port Jervis | 268 |
| Essen Medical Associates, PC | Bronx | 266 |
| Schweiger Dermatology PLLC | New York | 260 |
| Orthopaedic and Neurosurgery Specialists, PLLC | Harrison | 259 |
| Jamaica Hospital | Richmond Hill | 255 |
| Canton-Potsdam Hospital | Potsdam | 252 |
| Maimonides Faculty Practice Plan | Brooklyn | 252 |
| Samaritan Hospital of Troy, New York | Troy | 251 |
| Our Lady of Lourdes Memorial Hospital Inc | Binghamton | 249 |
| Ellis Hospital | Schenecctady | 249 |
| NYU Langone Hospitals | New York | 247 |
| Sun River Health Inc. | Walden | 243 |
| Chinatown True Care Medical PLLC | Brooklyn | 241 |
| Che Senior Psychological Services, PC | Dunkirk | 237 |
| Buffalo Medical Group, P.C. | Williamsville | 236 |
| Kaleida Health | Buffalo | 236 |
| Memorial Solid Tumor Group | New York | 234 |
| Southside Faculty Medical Affiliates University Faculty Practice Corp | Seaford | 231 |
| The Frederick Ferris Thompson Hospital | Shortsville | 230 |
| United Medical Associates PC | Johnson City | 229 |
| Fox Rehabilitation Physical Therapy Services LLC | New York | 229 |
| Carmel Psychological Health PC | Carmel | 228 |
| Lawrence Medical Associates PC | Bronxville | 224 |
| Clifton Springs Sanitarium Co | Clifton Springs | 221 |
| Tjh Medical Services PC | Kew Gardens | 219 |
| Arnot Ogden Medical Center | Horseheads | 216 |
| Memorial Hematology Lymphoma Group | New York | 216 |
| Hudson Headwaters Health Network | Glens Falls | 215 |
| McCd Psychiatry Services PLLC | New York | 212 |
| Suny Health Science Center at Syracuse | Syracuse | 212 |
| Trinity Medical Wny PC | Buffalo | 207 |
| New York Medical Physician Associates PC | Kingston | 202 |
| Southwest Suffolk Medical PC | Smithtown | 199 |
| Mercy Hospital of Buffalo | Orchard Park | 196 |
| The Westchester Medical Practice PC | Croton On Hudson | 196 |
| Mskcc Radiology Group | New York | 193 |
| True North Medical Group PC | Cedarhurst | 188 |
| Crouse Medical Practice PLLC | Syracuse | 188 |