| EMANUEL E. NECULA CONSULTING ENGINEER, P.C.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Mar 7, 1989 | Active |
| DH PROPERTIES, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Dec 23, 1988 | Active |
| WOLTMANN ASSOCIATES INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Dec 16, 1987 | Active |
| FAIRWAY SAND, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Oct 6, 1987 | Active |
| 2055 MIDDLE REALTY CO. INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jan 14, 1987 | Active |
| HAYWARD PROFESSIONAL ADVISORS, LTD.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Nov 14, 1986 | Active |
| JEFFERSON SPORTS MEDICINE ORTHOPAEDIC SERVICES, P.C.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Nov 3, 1986 | Active |
| BROOKHAVEN EXCAVATING, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Oct 24, 1986 | Active |
| VILLAGE WAY, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Apr 30, 1986 | Active |
| DAMLIN ENTERPRISES, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Mar 25, 1986 | Active |
| HEALTH CARE TEMP SERVICES, INCORPORATEDPort Jefferson, NY · Active | Port Jefferson, NY | Corporation | Feb 18, 1986 | Active |
| PACEWALKERS OF AMERICA, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Oct 4, 1985 | Active |
| CRACKERJACK PROMOS, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Sep 23, 1985 | Active |
| CCC DATA SERVICES, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Aug 16, 1985 | Active |
| FOURTY CONTRACTING CORP.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jun 18, 1985 | Active |
| PORT JEFFERSON ANSWERING SERVICE, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Apr 9, 1985 | Active |
| LOVE THOSE NAILS, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jun 29, 1984 | Active |
| EUGENE J. DONOHUE, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jan 30, 1984 | Active |
| GLENN B. DANIEL, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jan 20, 1984 | Active |
| PROGRESS TECHNOLOGIES INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Dec 3, 1982 | Active |
| ALAN LUCKS, P.C.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Oct 14, 1982 | Active |
| THE SMALL SHOP ANTIQUES & COLLECTIBLES INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Apr 1, 1982 | Active |
| BILLIE'S 1890 SALOON, INC.Point Jefferson, NY · Active | Point Jefferson, NY | Corporation | Mar 26, 1982 | Active |
| WILLIAM JAMES PHOTOGRAPHY LTD.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Feb 18, 1982 | Active |
| THE EAST END SHIRT CO., INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jul 7, 1980 | Active |
| TRI-MAC ENTERPRISES OF PORT JEFFERSON, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | May 18, 1979 | Active |
| VILLAGE DOCK, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Feb 28, 1979 | Active |
| FRANK D. OLIVETO, M.D., P.C.Point Jefferson, NY · Active | Point Jefferson, NY | Corporation | Nov 23, 1977 | Active |
| PORT JEFFERSON TIRE CORP.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Sep 30, 1976 | Active |
| ROBERT E. LEGENDRE REALTY CORP.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jun 3, 1975 | Active |
| SMART CITY MEDIA, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Oct 15, 2018 | Inactive |
| MOHAWK RIVER CONSULTANTS INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Apr 6, 2007 | Active |
| ITSY, OGGIE AND DAD INC.Port Jefferson Sta, NY · Active | Port Jefferson Sta, NY | Corporation | Sep 16, 2005 | Active |
| AUNT NELLIE, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | May 25, 2005 | Active |
| NUNEZ BARBER SHOP CORP.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | May 18, 2005 | Active |
| DIAMOND WOODS INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Apr 13, 2005 | Active |
| NIGHTLIGHT TRUCKING, LTD.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jan 27, 2005 | Active |
| BALDWIN CUSTOM ENTRIES LTD.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Jan 4, 2005 | Active |
| KRISTIN'S NAILS, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Mar 12, 2004 | Active |
| SEAL FORWARDING, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | May 8, 2000 | Active |
| DPM ENTERTAINMENT GROUP, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Feb 18, 1999 | Active |
| REVENUE ACCELERATORS, INC.Port Jefferson Station, NY · Active | Port Jefferson Station, NY | Corporation | Apr 20, 1998 | Active |
| TOWN AND COUNTRY AT PORT JEFFERSON H.O.A., INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Feb 24, 1995 | Active |
| K M F PROPERTY MANAGEMENT INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Feb 10, 1992 | Active |
| BELLE TERRE TERRACES, INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Apr 12, 1988 | Active |
| SPICY'S CHICKEN RESTAURANT, CORP.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Nov 30, 2010 | Active |
| EAST END CANDLE COMPANY INC.Port Jefferson, NY · Active | Port Jefferson, NY | Corporation | Nov 29, 2006 | Active |
| COMPETENCY CORPORATIONPort Jefferson, NY · Active | Port Jefferson, NY | Corporation | May 6, 2010 | Active |
| HOUSE CALL TELEMED, INCPort Jefferson, NY · Active | Port Jefferson, NY | Corporation | Oct 29, 2015 | Active |
| WHITFORD DEVELOPMENT INC.Ronkonkoma, NY · Active | Ronkonkoma, NY | Corporation | Nov 7, 1995 | Active |