| GREATER DELAWARE VALLEY SOCIETY OF TRANSPLANT SURGEONS | $152,878,717 | H9B | published | men: issues | Phila, PA | 2024 |
| SURGEONS DATA SCIENCE COLLECTIVE INC | $7,874,047 | H9B | published | | Washington, DC | 2024 |
| AATS FOUNDATION | $2,798,765 | H9B | published | science: research education | Fairfax, VA | 2024 |
| SOCIETY FOR PERIOPERATIVE ASSESSMENT AND QUALITY IMPROVEMENT | $779,575 | H9B | published | | Glenview, IL | 2025 |
| FOUNDATION FOR SPINAL RESTORATION | $648,902 | H9B | published | science: research education | Santa Monica, CA | 2024 |
| FOUNDATION FOR RESEARCH AND EDUCATION IN MINIMALLY INVASIVE SP | $638,005 | H9B | published | | Los Angeles, CA | 2024 |
| VASCULAR AND ENDOVASCULAR SURGERY SOCIETY | $632,704 | H9B | published | science: research education | Salem, MA | 2024 |
| AMERICAN SURGICAL ASSOCIATION FOUNDATION | $631,656 | H9B | published | | Beverly, MA | 2024 |
| THE PLASTIC SURGERY RESEARCH COUNCIL | $454,854 | H9B | published | | Beverly, MA | 2024 |
| ORTHOPAEDIC INNOVATION TECHNOLOGY CENTER INC | $416,250 | H9B | published | | Knoxville, TN | 2025 |
| PACIFIC CLINICAL RESEARCH FOUNDATION | $347,081 | H9B | published | | New Braunfels, TX | 2025 |
| INTERNATIONAL CELL SURGICAL SOCIETY | $250,230 | H9B | published | science: research education | Palm Desert, CA | 2025 |
| AMERICAN SOCIETY OF PODIATRIC SURGEONS INC | $160,308 | H9B | published | | Lafayette, LA | 2023 |
| SUBCORTICAL SURGERY GROUP INC | $154,728 | H9B | published | science: research education | Evanston, IL | 2024 |
| NORTHEAST ORTHOPEDICS EDUCATION AND RESEARCH FUND INC | $145,768 | H9B | published | | Fort Wayne, IN | 2025 |
| COLORADO ORTHOPAEDIC RESEARCH INSTITUTE | $130,000 | H9B | published | science: research education | Lone Tree, CO | 2024 |
| PARK CITY HIP & KNEE FOUNDATION | $121,650 | H9B | published | | Park City, UT | 2025 |
| DIFELICE FOUNDATION FOR ORTHOPAEDICS INC | $90,029 | H9B | published | | New York, NY | 2024 |
| INDIAN AMERICAN SHOULDER & ELBOW SURGEONS INC | $87,171 | H9B | published | | Irvine, CA | 2024 |
| ENDOCRINE SURGERY QUALITY FOUNDATION | $71,618 | H9B | published | | Lexington, KY | 2024 |
| LIMBS INTERNATIONAL INC | $60,884 | H9B | published | | El Paso, TX | 2025 |
| SURGICAL OUTCOMES CLUB INC | $57,580 | H9B | published | science: research education | Howell, MI | 2024 |
| MY HEART OF HAZEL | $54,462 | H9B | published | | Minden, IA | 2021 |
| INTERFACE INC | $53,001 | H9B | published | | San Diego, CA | 2025 |
| SOCIETY FOR FUNCTIONAL PRECISION MEDICINE | $34,840 | H9B | published | | Boston, MA | 2024 |
| DOCTORS COLLABORATING TO HELP CHILDREN CORP | $26,404 | H9B | published | | Cambridge, MA | 2024 |
| ORTHOBETHESDA RESEARCH FOUNDATION | $20,658 | H9B | published | | Bethesda, MD | 2024 |
| INTERNATIONAL INSTITUTE OF RECONSTRUCTIVE MICROSURGERY LTD | $20,000 | H9B | published | science: research education | New York, NY | 2025 |
| EDUCATIONAL FOUNDATION OF RECONSTRUCTIVE SURGERY | $15,000 | H9B | published | | Alamogordo, NM | 2025 |
| HIP SURGICAL TREATMENT REGISTRY INC | $7,000 | H9B | published | | Stanford, CA | 2024 |
| TOTAL SPINE & ORTHOPEDICS FOUNDATION | $5,688 | H9B | published | | Melbourne, FL | 2025 |
| MICROSURGICAL TRANSPLANTATION RESEARCH FOUNDATION | $3,009 | H9B | published | | San Mateo, CA | 2025 |
| PARKER HILL ORTHOPEDIC RESEARCHFOUNDATION INC | $106 | H9B | published | | Winchester, MA | 2024 |
| Bariatric Research Associates Inc | $0 | H9B | inferred 0.60 | | Amherst, NY | 2016 |
| INSTITUTE FOR TRANSPERINEAL PROSTATE BIOPSY INC | $0 | H9B | published | | Newport Coast, CA | 2020 |
| IJRI RESEARCH AND EDUCATION FOUNDATION INC | $0 | H9B | published | | Fishers, IN | 2025 |
| MASSACHUSETTS SOCIETY OF THORACIC SURGEONS INC | - | H9B | published | | Beverly, MA | |
| TEXAS FOUNDATION FOR THE ADVANCEMENT OF SURGICAL TRAINING E | - | H9B | published | | Bellaire, TX | |
| SURGICAL EYE SOCIETY INC | - | H9B | published | | Ocean Ridge, FL | |
| AMERICAN SPINAL DECOMPRESSION SOCIETY INC | - | H9B | published | | Tampa, FL | |
| INLAND NORTHWEST SPINE CONSORTIUM I NCORPORATED | - | H9B | published | | Hayden, ID | |
| MARCHAND INSTITUTE FOR MINIMALLY IN VASIVE SURGERY | - | H9B | published | | Mesa, AZ | |
| WEATHERHEAD UROLOGIC AND MEDICAL RE SEARCH FOUNDATION | - | H9B | published | | Houston, TX | |
| NORTHWEST SPINE FOUNDATION | - | H9B | published | | Lake Oswego, OR | |
| ROCKFORD AREA ILLINI CLUB NFP | - | H9B | published | | Rockford, IL | |
| TURNS | - | H9B | published | | Lake Bluff, IL | |
| OPERATION HAPPENIS INC | - | H9B | published | | The Colony, TX | |
| MULTICENTER ORTHOPEDIC STUDY GROUPS INC | - | H9B | published | | Rockford, IL | |
| VIRGINIA INSTITUTE OF RECONSTRUCTIVE SURGERY | - | H9B | published | | Virginia Beach, VA | |
| COLORECTAL RESEARCH INSTITUTE | - | H9B | published | | Dallas, TX | |
| FONDREN ORTHOPEDIC RESEARCH INSTITUTE INC | - | H9B | published | | Houston, TX | |
| GLOBAL OTOLARYNGOLOGY-HEAD AND NECK SURGERY INITIATIVE INCORPORATED | - | H9B | published | | Chicago, IL | |
| LABYRINTH - FUTURE OSTEOPATHIC SCHOLARS IN OTOLARYNGOLOGY | - | H9B | published | | Manasquan, NJ | |
| ORANGE COUNTY SPINE RESEARCH FOUNDATION INC | - | H9B | published | | Costa Mesa, CA | |
| CK ORTHOPAEDIC RESEARCH AND EDUCATION FOUNDATION | - | H9B | published | | Ogden, UT | |