2026-08-10T13:51:32-04:00 2025-09-30 465361959 JONES CPAS & ADVISORS INC 925 NW 56TH TERRACE SUITE C GAINESVILLE FL 32605 990 2024-10-01 043146650 INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY - ISRS INTE 3523731080 C/O JONES CPAS 925 NW 56TH TER C GAINESVILLE FL 32605 JASON SHEEHAN PRESIDENT 3523731080 2026-08-10 true true WILLIAM JONES CPAPFS P01420212 3523731080 2026-08-10 2024 2025-03-06 01:10:19Z JASON SHEEHAN 404880 false X WWW.ISRSY.ORG X 1991 PA THE INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY (ISRS) WAS FOUNDED AS A WORLDWIDE ORGANIZATION IN 1991 AND REMAINS THE ONLY PROFESSIONAL BODY OF ITS KIND. CREATED TO FOSTER LEARNING AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY, THE SOCIETY IS HIGHLY DEDICATED TO: 1. PROMOTING TECHNICAL DEVELOPMENTS IN STEREOTACTIC RADIOSURGERY 2. PROMOTING THE HIGHEST LEVELS OF CLINICAL EXPERTISE 3. CONVENING EVERY TWO YEARS AT THE ISRS CONGRESS. THE ISRS FOSTERS TECHNICAL DEVELOPMENT AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY BY HOLDING BIENNIAL CONGRESSES, MAINTAINING A WEBSITE, AND OTHER ACTIVITIES TO ENCOURAGE THE EXCHANGE OF INFORMATION. 13 13 0 0 0 471824 404880 0 0 471824 404880 19500 953 0 0 0 0 482072 253391 501572 254344 -29748 150536 547825 698361 0 547825 698361 X THE INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY (ISRS) WAS FOUNDED AS A WORLDWIDE ORGANIZATION IN 1991 AND REMAINS THE ONLY PROFESSIONAL BODY OF ITS KIND. CREATED TO FOSTER LEARNING AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY, THE SOCIETY IS HIGHLY DEDICATED TO: 1. PROMOTING TECHNICAL DEVELOPMENTS IN STEREOTACTIC RADIOSURGERY 2. PROMOTING THE HIGHEST LEVELS OF CLINICAL EXPERTISE 3. CONVENING EVERY TWO YEARS AT THE ISRS CONGRESS. THE ISRS FOSTERS TECHNICAL DEVELOPMENT AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY BY HOLDING BIENNIAL CONGRESSES, MAINTAINING A WEBSITE, AND OTHER ACTIVITIES TO ENCOURAGE THE EXCHANGE OF INFORMATION. false false THE ISRS ORGANIZES AND HOLDS A BIENNIAL CONGRESS TO ENCOURAGE INTERACTION AMONG INTERNATIONAL COMMUNITIES OF HEALTHCARE PROFESSIONALS DEDICATED TO THE ADVANCEMENT OF STEREOTACTIC RADIOSURGERY AND TO GIVE THEM THE OPPORTUNITY TO BROADEN AND DEVELOP THEIR KNOWLEDGE WITH FELLOW PROFESSIONALS. IN ADDITION TO OTHER ACTIVITIES AT THE BIENNIAL CONGRESS, THE ISRS MAKES CERTAIN AWARDS FOR CONTRIBUTIONS IN THE FIELD OF RADIOSURGERY, SCIENTIFIC PAPERS, AND POSTERS. DURING THIS YEAR, THE ORGANIZATION WAS PREPARING FOR ITS NEXT CONGRESS, TO BE HELD IN MAY 2026 IN SYDNEY, AUSTRALIA. OVER 700 NEUROSURGEIONS, RADIATION ONCOLOGISTS, MEDICAL PHYSICISTS, AND OTHERS FROM OVER 55 COUNTRIES WERE PRESENT AT THE MAY, 2024 BIENNIAL CONGRESS IN NEW YORK CITY. IN ALTERNATE YEARS, ISRS ORGANIZES INTERIM MEETINGS TO MAINTAIN CURRENCY IN EDUCATION FOR ITS MEMBERS. THE ISRS WEBSITE IS REGULARLY UPDATED WITH NEWSFEEDS TO ATTRACT MORE MEMBERS FROM THE SECTOR. NEWSLETTERS ARE SENT BY EMAIL TO ALL ISRS MEMBERS. ISRS ORGANIZES NUMEROUS WEBINARS AS PART OF ITS EDUCATIONAL ACTIVITIES TO EXPAND AND UPDATE ITS MEMBERS' KNOWLEDGE AND SKILL. false false false true false false false false false false false false false false false false false false true true false false false false false false false false false false false false false false false false false false false false false false false true 0 0 0 false true SZ false false false false false false X 13 13 false true false false false false false true true false false true true true true false false true false false X KENES GROUP 0229080488 RUE FRANCOIS-VERSONNEX 7 1207 GENEVA GENEVA SZ X JASON SHEEHAN PRESIDENT X 0 0 0 THIERRY GEVAERT VICE PRESIDE X 0 0 0 THOMAS ZILLI SECRETARY X 0 0 0 MARC LEVIVIER MD TREASURER X 0 0 0 ARJUN SAGHAL PAST PRESIDE X 0 0 0 CHRISTOS BOSKOS DIRECTOR X 0 0 0 CHRISTOPHER CIFARELLI DIRECTOR X 0 0 0 ELENA DE MARTIN DIRECTOR X 0 0 0 KATARZYNA JERZAK DIRECTOR X 0 0 0 JUSTIN CHENG-CHIA LEE DIRECTOR X 0 0 0 VICTOR LEE DIRECTOR X 0 0 0 SELCUK PEKER DIRECTOR X 0 0 0 DANIEL TAN DIRECTOR X 0 0 0 false false false CORPORATE SUBSIDIES 900099 296205 296205 MEMBERSHIP DUES 900099 108675 108675 404880 404880 404880 X 953 81950 30680 4150 98897 1994 20088 9028 EXCHANGE RATE EFFECT 4709 EDUCATIONAL WEBINARS 1895 254344 0 0 0 547825 698361 547825 698361 0 0 X 547825 698361 547825 698361 547825 698361 150536 X false false false true false false false EUROPE 1 1 WEBSITE HOST, ADMIN ADMIN 253391 1 1 1 1 253391 253391 false false false false false false SCHEDULE F, PAGE 1, PART I, LINE 3 EUROPE 253,391 0 FORM 990 - ORGANIZATION'S MISSION THE INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY (ISRS) WAS FOUNDED AS A WORLDWIDE ORGANIZATION IN 1991 AND REMAINS THE ONLY PROFESSIONAL BODY OF ITS KIND. CREATED TO FOSTER LEARNING AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY, THE SOCIETY IS HIGHLY DEDICATED TO: 1. PROMOTING TECHNICAL DEVELOPMENTS IN STEREOTACTIC RADIOSURGERY 2. PROMOTING THE HIGHEST LEVELS OF CLINICAL EXPERTISE 3. CONVENING EVERY TWO YEARS AT THE ISRS CONGRESS. THE ISRS FOSTERS TECHNICAL DEVELOPMENT AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY BY HOLDING BIENNIAL CONGRESSES, MAINTAINING A WEBSITE, AND OTHER ACTIVITIES TO ENCOURAGE THE EXCHANGE OF INFORMATION. FORM 990, PAGE 2, PART III, LINE 4A THE ISRS ORGANIZES AND HOLDS A BIENNIAL CONGRESS TO ENCOURAGE INTERACTION AMONG INTERNATIONAL COMMUNITIES OF HEALTHCARE PROFESSIONALS DEDICATED TO THE ADVANCEMENT OF STEREOTACTIC RADIOSURGERY AND TO GIVE THEM THE OPPORTUNITY TO BROADEN AND DEVELOP THEIR KNOWLEDGE WITH FELLOW PROFESSIONALS. IN ADDITION TO OTHER ACTIVITIES AT THE BIENNIAL CONGRESS, THE ISRS MAKES CERTAIN AWARDS FOR CONTRIBUTIONS IN THE FIELD OF RADIOSURGERY, SCIENTIFIC PAPERS, AND POSTERS. DURING THIS YEAR, THE ORGANIZATION WAS PREPARING FOR ITS NEXT CONGRESS, TO BE HELD IN MAY 2026 IN SYDNEY, AUSTRALIA. OVER 700 NEUROSURGEIONS, RADIATION ONCOLOGISTS, MEDICAL PHYSICISTS, AND OTHERS FROM OVER 55 COUNTRIES WERE PRESENT AT THE MAY, 2024 BIENNIAL CONGRESS IN NEW YORK CITY. IN ALTERNATE YEARS, ISRS ORGANIZES INTERIM MEETINGS TO MAINTAIN CURRENCY IN EDUCATION FOR ITS MEMBERS. FORM 990, PART V, LINE 4B SWITZERLAND FORM 990, PAGE 6, PART VI, LINE 3 THE ORGANIZATION HAS CONTRACTED WITH AN OUTSIDE MANAGEMENT COMPANY SO THAT THE MANAGEMENT COMPANY WILL HANDLE ORGANIZATION OF THE BIENNIAL CONGRESS WITH THE RELATED REVENUES AND EXPENSES. THE MANAGEMENT COMPANY ALSO HANDLES THE ORGANIZATION'S MEMBERSHIP DUES AND MAINTAINS THE WEBSITE AND MEMBERSHIP LISTS. FORM 990, PAGE 6, PART VI, LINE 11B A COPY OF THE FORM 990 IS EMAILED TO THE OFFICERS FOR THEIR REVIEW PRIOR TO FINALIZATION OF THE FORM 990. THE FINAL COPY OF THE FORM 990 IS SENT TO THE OFFICER RESPONSIBLE FOR SIGNING AND FILING THE FORM 990, WHO REVIEWS THE FORM 990 PRIOR TO SIGNING AND FILING IT. FORM 990, PAGE 6, PART VI, LINE 12C THE ORGANIZATION'S CONFLICT OF INTEREST POLICY IS MONITORED THROUGH THE DAY-TO-DAY COMMUNICATION BETWEEN THE GOVERNING BODY AND THE HEADQUARTER SECRETARIAT (LOCATED IN KENES GROUP, GENEVA SWITZERLAND). IF A CONFLICT OF INTEREST SHOULD ARISE, THE BYLAWS (SECTION 9 - RESIGNATION AND REMOVAL) STATE THAT "WHENEVER, IN THE JUDGEMENT OF THE BOARD OF DIRECTORS, THE BEST INTERESTS OF THE ISRS WILL BE SERVED, ANY MEMBER MAY BE REMOVED FROM OFFICE BY TWO-THIRDS VOTE OF THE MEMBERS OF THE BOARD OF DIRECTORS IN OFFICE, AT ANY MEETING OF THE BOARD OF DIRECTORS DULY CALLED AT WHICH A QUORUM IS PRESENT." FORM 990, PAGE 6, PART VI, LINE 15A THE ORGANIZATION DOES NOT COMPENSATE ITS OFFICERS OR DIRECTORS, NOR DOES IT HAVE ANY EMPLOYEES. IT HAS CONTRACTED WITH AN INDEPENDENT OUTSIDE ORGANIZATION TO PROVIDE ADMINISTRATIVE AND FINANCIAL SERVICES. FORM 990, PAGE 6, PART VI, LINE 19 THE ISRS MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE UPON REQUEST. THE ISRS' BYLAWS ARE ON THE ORGANIZATION'S WEBSITE. FORM 990, PART IX, LINE 11G CONSULTING 98,897 0 0