| Permanente Medical Group INC | Santa Clara, CA | 479 |
| Florida Woman Care LLC | Boynton Beach, FL | 366 |
| Vitalmd Group Holding LLC | Miami, FL | 322 |
| Southern California Permanente Medical Group | Los Angeles, CA | 316 |
| Uwh Of The Carolinas PLLC | Raleigh, NC | 220 |
| Regional Womens Health Group LLC | Voorhees, NJ | 217 |
| North Shore-Lij Medical PC | Manhasset, NY | 214 |
| Physicians For Women'S Health, LLC | Danbury, CT | 213 |
| Womens Care Florida LLC | Tampa, FL | 192 |
| Capital Womens Care LLC | Rockville, MD | 188 |
| University Of Pittsburgh Physicians | Pittsburgh, PA | 185 |
| Sutter Bay Medical Foundation | Berkeley, CA | 185 |
| Obhg Texas Holdings PA | Houston, TX | 160 |
| Cleveland Clinic | Cleveland, OH | 158 |
| New York University | New York, NY | 153 |
| Novant Health Medical Group, LLC | Charlotte, NC | 148 |
| Unified Womens Healthcare Of Texas PLLC | Austin, TX | 133 |
| Carolinas Physicians Network INC | Charlotte, NC | 130 |
| Iu Health Medical Group LLC | Indianapolis, IN | 125 |
| Privia Medical Group, LLC | Richmond, VA | 122 |
| Trihealth H LLC | Cincinnati, OH | 121 |
| Lifeline Medical Associates LLC | Denville, NJ | 115 |
| Ob Hospitalist Group LLC | Jacksonville, FL | 115 |
| Kaiser Foundation Health Plan Of The Mid Atlantic States, INC | Largo, MD | 115 |
| Ut Physicians | Houston, TX | 111 |
| Advocate Health And Hospitals Corporation | Buffalo Grove, IL | 109 |
| Hackensack Meridian Health Medical Group - Specialty Care PC | Neptune, NJ | 107 |
| Ochsner Clinic LLC | New Orleans, LA | 107 |
| Allina Health System | Annandale, MN | 107 |
| Medstar Medical Group Ii LLC | Washington, DC | 107 |
| Duke Health Integrated Practice INC | Durham, NC | 104 |
| Northwestern Medical Faculty Foundation | Chicago, IL | 104 |
| Orlando Health Medical Group INC | Orlando, FL | 104 |
| Yale University | New Haven, CT | 103 |
| Wellstar Medical Group LLC | Marietta, GA | 101 |
| Endeavor Health Medical Group | Evanston, IL | 100 |
| Aurora Medical Group, INC. | Milwaukee, WI | 96 |
| Icahn School Of Medicine At Mount Sinai | New York, NY | 91 |
| Obhg California PC | Riverside, CA | 91 |
| Ihc Health Services INC | Salt Lake City, UT | 91 |
| Florida Hospital Medical Group INC | Maitland, FL | 88 |
| Prisma Health University Medical Group | Greenville, SC | 86 |
| Allegheny Clinic | Pittsburgh, PA | 85 |
| The Emory Clinic INC | Atlanta, GA | 83 |
| Inova Health Care Services | Falls Church, VA | 82 |
| Community Medical Associates INC | Louisville, KY | 82 |
| Sutter Valley Medical Foundation | Sacramento, CA | 80 |
| University Hospitals Medical Group INC | Cleveland, OH | 80 |
| Montefiore Medical Center | Bronx, NY | 80 |
| Barnabas Health Medical Group PC | Livingston, NJ | 78 |
| Vanderbilt University Medical Center | Nashville, TN | 78 |
| Johns Hopkins University | Baltimore, MD | 78 |
| University Physicians Incorporated | Aurora, CO | 78 |
| University Of Penn-Medical Group | Philadelphia, PA | 77 |
| Midwest Center For Women'S Healthcare, LTD | Park Ridge, IL | 76 |
| Mid-Atlantic Womens Care Plc | Norfolk, VA | 75 |
| Trustees Of Columbia University In The City Of New York | New York, NY | 75 |
| Community Physicians Of Indiana INC | Indianapolis, IN | 74 |
| Baptist Health Medical Group INC | Louisville, KY | 74 |
| University Of Texas Southwestern Medical Center At Dallas | Dallas, TX | 74 |
| Virtua Medical Group, PA | Voorhees, NJ | 73 |
| St Lukes Physician Group INC | Wind Gap, PA | 72 |
| University Of North Carolina At Chapel Hill | Chapel Hill, NC | 72 |
| Regents Of The University Of Michigan | Ann Arbor, MI | 72 |
| Ohiohealth Corporation | Columbus, OH | 71 |
| Wellspan Medical Group | York, PA | 70 |
| University Associates In Obstetrics And Gynecology University Faculty | Stony Brook, NY | 70 |
| Seton Family Of Doctors | Austin, TX | 70 |
| Iha Health Services Corporation | Ypsilanti, MI | 70 |
| Washington University | Saint Louis, MO | 69 |
| Affinity Physicians LLC. | Warwick, RI | 69 |
| Massachusetts General Physicians Organization INC | Boston, MA | 69 |
| Group Health INC | Saint Paul, MN | 69 |
| Texas Childrens Physician Group | Houston, TX | 69 |
| Uwh Of Michigan Plc | East Lansing, MI | 69 |
| The Association Of University Physicians | Seattle, WA | 68 |
| Brigham And Womens Physicians Organization INC | Boston, MA | 68 |
| Weill Medical College Of Cornell | New York, NY | 68 |
| Mercy Clinic East Communities | Saint Louis, MO | 67 |
| Lehigh Valley Physician Group | Allentown, PA | 66 |
| Scott And White Clinic | Temple, TX | 64 |
| Ucsf Medical Group Business Services | San Francisco, CA | 64 |
| Texas Health Care PLLC | Fort Worth, TX | 63 |
| Central Dupage Physician Group | Wheaton, IL | 62 |
| Scripps Health | La Jolla, CA | 62 |
| Houston Methodist Specialty Physicians | Houston, TX | 62 |
| Tmh Physician Associates PLLC | Houston, TX | 61 |
| Umass Memorial Medical Group INC | Worcester, MA | 61 |
| Atlanta Women'S Health Group PC | Atlanta, GA | 61 |
| Genesis Ob Gyn PLLC | Oro Valley, AZ | 61 |
| Poudre Valley Medical Group LLC | Colorado Springs, CO | 61 |
| Arizona Ob Gyn Affiliates PC | Chandler, AZ | 61 |
| Regents Of The University Of California | San Diego, CA | 61 |
| Privia Medical Group Gulf Coast PLLC | Houston, TX | 60 |
| Geisinger Clinic | Danville, PA | 59 |
| Multicare Health System | Gig Harbor, WA | 59 |
| Mainehealth | Portland, ME | 58 |
| Portercare Adventist Health System | Denver, CO | 58 |
| Spectrum Health Primary Care Partners | Grand Rapids, MI | 58 |
| University Of Chicago | Chicago, IL | 58 |
| Womens Healthcare Associates LLC | Portland, OR | 58 |
| Mayo Clinic | Rochester, MN | 58 |
| Park Nicollet Clinic | Bloomington, MN | 58 |
| Pinnacle Health Medical Services | Harrisburg, PA | 57 |
| Rush University Medical Group | Chicago, IL | 57 |
| University Of Alabama Health Services Foundation, PC | Birmingham, AL | 57 |
| Main Line Healthcare | Bryn Mawr, PA | 56 |
| Providence Medical Foundation | Fullerton, CA | 55 |
| Optum Medical Care PC | Mount Kisco, NY | 55 |
| Atrius Health INC | Boston, MA | 54 |
| Practice Associates Medical Group | Morristown, NJ | 53 |
| Strong Obstetrics-Gynecology Group | Rochester, NY | 53 |
| Premier Health Specialists INC | Dayton, OH | 52 |
| Women'S Health Associates Of Southern Nevada- Martin, PLLC | Las Vegas, NV | 52 |
| Swedish Health Services | Seattle, WA | 52 |
| Premier Obgyn Of Minnesota PLLC | Maple Grove, MN | 52 |
| Together Women'S Health Medical Group, P.C. | Roseville, MI | 52 |
| University Of California San Francisco | San Francisco, CA | 52 |
| University Professional Services | Portland, OR | 52 |
| The Regents Of The University Of California | Los Angeles, CA | 51 |
| Mary Hitchcock Memorial Hospital | Lebanon, NH | 50 |
| Square Care Medical Group LLP | Mineola, NY | 50 |
| Iowa Physicians Clinic Medical Foundation | Bettendorf, IA | 50 |
| Maryland Physicians Edge LLC | Washington, DC | 50 |
| Dartmouth-Hitchcock Clinic | Lebanon, NH | 49 |
| Hoag Clinic | Newport Beach, CA | 49 |
| Lexington Health INC | West Columbia, SC | 49 |
| Christ Hospital Medical Specialists LLC | Cincinnati, OH | 49 |
| Physician Affiliate Group Of New York PC | Brooklyn, NY | 49 |
| The Medical College Of Wisconsin INC | Milwaukee, WI | 49 |
| Healthtexas Provider Network | Dallas, TX | 48 |
| Healthone Clinic Services - Obstetrics And Gynecology LLC | Denver, CO | 48 |
| Medical City Ob-Gyn, PLLC | Dallas, TX | 48 |
| Regents Of The Univ Of Ca | Sacramento, CA | 48 |
| Henry Ford Health System | Detroit, MI | 47 |
| Christiana Care Health Services INC | Newark, DE | 46 |
| Fairview Clinics | Edina, MN | 46 |
| Presbyterian Healthcare Services | Albuquerque, NM | 46 |
| Kaiser Foundation Health Plan Of The Northwest | Clackamas, OR | 46 |
| Osf Multi-Specialty Group | Peoria, IL | 46 |
| University Medical Associates Of The Medical University Of South Carol | Charleston, SC | 46 |
| Baystate Medical Practices INC | Springfield, MA | 46 |
| Pratt Ob/Gyn Associates, INC | Boston, MA | 45 |
| The Board Of Trustees Of The University Of Illinois | Chicago, IL | 45 |
| Parkview Health System INC | Fort Wayne, IN | 45 |
| State University Of Iowa | Iowa City, IA | 45 |
| Aurora Advanced Healthcare, INC. | Milwaukee, WI | 45 |
| Wake Forest University Health Sciences | Winston Salem, NC | 45 |
| Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr INC | Boston, MA | 45 |
| University Of Texas Health Science Center At San Antonio | San Antonio, TX | 45 |
| Bhs Physicians Network, INC | El Paso, TX | 44 |
| Dhp Of Manatee PA | Tampa, FL | 44 |
| Virginia Physicians For Women, LTD | North Chesterfield, VA | 44 |
| Kapiolani Medical Specialists | Honolulu, HI | 44 |
| Seven Hills Ob-Gyn Associates LLC | Indianapolis, IN | 44 |
| Ob Hospitalist Services New Jersey PA | Vineland, NJ | 43 |
| Dupage Medical Group LTD | Bloomingdale, IL | 43 |
| Regents Of The University Of California | Orange, CA | 43 |
| Legacy Clinics LLC | Portland, OR | 43 |
| Abington Memorial Hospital | Abington, PA | 43 |
| Memphis Obstetrics And Gynecological Association PC | Memphis, TN | 43 |
| Kettering Independent Medical Group INC | Kettering, OH | 43 |
| Florida Hospital Physician Group INC | Tampa, FL | 43 |
| Kansas University Physicians INC | Kansas City, KS | 42 |
| Maternohio Clinical Associates LLC | Columbus, OH | 42 |
| Franciscan Physician Network | Lafayette, IN | 42 |
| Dignity Health Medical Foundation | Folsom, CA | 42 |
| Atlanta Women'S Heathcare Specialists, LLC | Atlanta, GA | 42 |
| The University Of Chicago Medical Center | Chicago, IL | 42 |
| General Physician PC | Dunkirk, NY | 41 |
| Catholic Health Initiatives Colorado | Colorado Springs, CO | 41 |
| Texas Health Physicians Group | Dallas, TX | 41 |
| Faculty Physicians And Surgeons Of Llusm | Loma Linda, CA | 41 |
| Hca Houston Ob Hospitalist, PLLC | Houston, TX | 41 |
| Infinite Health Collaborative, PA | Edina, MN | 41 |
| County Of Santa Clara | San Jose, CA | 41 |
| Boston University Obstetrics And Gynecology Foundation INC | Boston, MA | 40 |
| Capital Health Medical Group | Langhorne, PA | 40 |
| Summit Medical Group PA | Berkeley Heights, NJ | 40 |
| University Of Wisconsin Medical Foundation INC | Madison, WI | 40 |
| Westchester Medical Group, P.C | White Plains, NY | 40 |
| Valley Physician Services PC | Hoboken, NJ | 40 |
| University Healthcare Alliance | Los Gatos, CA | 40 |
| St Lukes Clinic-Treasure Valley LLC | Boise, ID | 40 |
| Wakemed Specialists Group LLC | Raleigh, NC | 40 |
| Carle Health Care Incorporated | Urbana, IL | 40 |
| Obhg Washington PC | Tacoma, WA | 40 |
| Clinical Care Associates Of The University Of Pennsylvania Health. | Philadelphia, PA | 40 |
| Prisma Health Medical Group-Midlands | Columbia, SC | 40 |
| Iriye Medical Group PLLC | Las Vegas, NV | 40 |
| Obhg Virginia LLC | Midlothian, VA | 39 |
| Luminis Health Medical Group, LLC | Annapolis, MD | 39 |
| University Of Miami | Miami, FL | 39 |
| Froedtert Andthe Medical College Of Wisconsin Community Physicians INC | West Bend, WI | 39 |
| Franciscan Medical Group | Tacoma, WA | 39 |
| Ssm Health Care Group | Saint Louis, MO | 38 |
| University Of Virginia Physicians Group | Charlottesville, VA | 38 |
| Colorado Permanente Medical Group PC | Denver, CO | 38 |
| Evms Academic Physicians And Surgeons Health Services Foundation | Norfolk, VA | 38 |
| University Of Cincinnati Physicians Company LLC | Cincinnati, OH | 38 |
| West Virginia University Medical Corporation | Morgantown, WV | 37 |
| Saint Lukes Physician Group INC | Kansas City, MO | 37 |
| Cedars-Sinai Medical Care Foundation | Los Angeles, CA | 37 |
| Trinity Health Of New England Provider Network Organization INC | Hartford, CT | 37 |
| Oh Independent Medical Group LLC | Westerville, OH | 37 |
| Spartanburg Medical Center | Spartanburg, SC | 37 |
| Providence Health And Services Oregon | Portland, OR | 37 |
| Clinical Health Care Associates Of New Jersey PC | Plainsboro, NJ | 36 |
| Northside Surgical Professional Services LLC | Atlanta, GA | 36 |
| Ou Health Partners INC | Oklahoma City, OK | 36 |
| Physicians Clinic INC | Elkhorn, NE | 35 |
| Kelsey-Seybold Medical Group, PLLC | Houston, TX | 35 |
| Medical Faculty Associates, INC | Washington, DC | 35 |
| St Vincent Medical Group INC | Indianapolis, IN | 35 |
| Florida Clinical Practice Association INC | Gainesville, FL | 35 |
| Osu Gyn And Ob Consultants LLC | Columbus, OH | 35 |
| Stanford Health Care | Stanford, CA | 35 |
| University Of Vermont Medical Center INC | Burlington, VT | 34 |
| Fairview Express Care | Minneapolis, MN | 34 |
| Mcv Associated Physicians | Richmond, VA | 34 |
| Ob-Gyn Affiliates | Centennial, CO | 34 |
| Austin Regional Clinic PA | Austin, TX | 34 |
| Alegent Creighton Clinic | Omaha, NE | 34 |
| University Medical Service Association INC | Tampa, FL | 34 |
| Pediatrix Medical Group Of Florida INC | Miramar, FL | 34 |
| University Of Utah Adult Services | Salt Lake City, UT | 34 |
| Bronson Methodist Hospital | Kalamazoo, MI | 34 |
| Utmb Faculty Group Practice | Galveston, TX | 33 |
| Tjh Medical Services PC | Jamaica, NY | 33 |
| Obhg Georgia, P.C. | Albany, GA | 33 |
| Jefferson University Physicians | Philadelphia, PA | 33 |
| Physician Groups Lc | Saint Louis, MO | 33 |
| Promedica Central Physicians | Toledo, OH | 33 |
| Albany Medical College | Albany, NY | 33 |
| Valley Perinatal Services LLC | Chandler, AZ | 33 |
| Louisiana Women'S Healthcare Associates LLC | Baton Rouge, LA | 33 |
| Carilion Medical Center | Roanoke, VA | 32 |
| University Of Connecticut Health Center | Farmington, CT | 32 |
| Kentucky Medical Services Foundation, INC | Lexington, KY | 32 |
| Saint Thomas Medical Partners | Nashville, TN | 32 |
| Pediatrix Medical Group Of Texas Billing INC | Fort Worth, TX | 32 |
| Northeast Medical Group INC | Bridgeport, CT | 32 |
| Memorialcare Medical Foundation | Long Beach, CA | 32 |
| Temple Faculty Practice Plan INC | Philadelphia, PA | 32 |
| Emory Medical Care Foundation INC | Atlanta, GA | 31 |