STRATEGY STUDIO / PUBLIC DATA EXPLORER

INTERNATIONAL SOCIETY OF ORTHOPAEDI ORTHOPAEDID CENTERS LTD ISOC INC

Cite this

Plain text INTERNATIONAL SOCIETY OF ORTHOPAEDI ORTHOPAEDID CENTERS LTD ISOC INC. Strategy Studio, nonprofit organization profile, tax years 2014–2025. https://strategystudio.org/org/900649293. Retrieved 2026-10-19.

APA Strategy Studio. (n.d.). INTERNATIONAL SOCIETY OF ORTHOPAEDI ORTHOPAEDID CENTERS LTD ISOC INC [Nonprofit organization profile; tax years 2014–2025]. Retrieved October 19, 2026, from https://strategystudio.org/org/900649293

MLA “INTERNATIONAL SOCIETY OF ORTHOPAEDI ORTHOPAEDID CENTERS LTD ISOC INC.” Strategy Studio, tax years 2014–2025, https://strategystudio.org/org/900649293. Accessed 19 Oct. 2026.

Retrieved 2026-10-19; covers tax years 2014–2025. Data: Strategy Studio, CC BY 4.0.

2025 · Form 990 · revenue $71K · expenses $64K · assets $158K

Also known as
CENTERS LTD (ISOC INC)
EIN
90-0649293
Address
535 E 70TH ST, NEW YORK, NY 10021-4823
Website
WWW.ISOCWEB.ORG
NTEE code
G50
Subsection
501(c)(3)
Ruling year
2014
Cross-check
ProPublica Nonprofit Explorer

Mission

THE SOCIETY'S MISSION IS TO SHARE KNOWLEDGE AND STRATEGIES, IMPROVE PATIENT CARE, AND FOSTER CLINICAL,EDUCATIONAL, AND SCIENTIFIC COLLABORATION.

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).

People paid by the organization

None of the 4 people listed on these returns reported compensation from the organization. They are listed below.

Officers and directors, no compensation reported

4 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.

NameLatest titleYearsHrs/wk (latest)CompensationOrganizations
Mathias Bostrom DIRECTOR2015-2025 0 $0 reported 4
Briana Bloom OFFICER2025 0 $0 reported 1
Laura Robbins (former) OFFICER2015-2024 0 $0 reported 1
Thomas Sculco (former) DIRECTOR2014 0 $0 reported 4

People by year

2025 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
BRIANA BLOOM OFFICER0 $0$0$0 $01
2024 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2023 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2022 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2021 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2020 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2019 · 2 people listed · none paid · 0 employees · 3 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2018 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2017 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2016 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2015 · 2 people listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MATHIAS BOSTROM DIRECTOR0 $0$0$0 $04
LAURA ROBBINS OFFICER0 $0$0$0 $01
2014 · 1 person listed · none paid · 0 employees · 0 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THOMAS SCULCO DIRECTOR0 $0$0$0 $04

Highest-paid independent contractors

No independent contractors reported.

Who gave

Contributor names are not public for this form type.

Public charities filing Form 990 or 990-EZ report large donors on Schedule B, but the IRS withholds their names and addresses from public copies. Private foundations (990-PF) are different: their contributors are public.

Finances

Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.

RevenueExpensesAssetsNet assetsContributionsProgram revenueOfficer payEmployeesVolunteers
2025 · Form 990 period ending 2025-12-31 · view filing · original 990 ↗
$70,568$64,335 $158,404$152,765 $70,568$0 $000
2024 · Form 990 period ending 2024-12-31 · view filing · original 990 ↗
$42,314$14,314 $152,171$146,532 $42,314$0 $000
2023 · Form 990 period ending 2023-12-31 · view filing · original 990 ↗
$38,058$28,427 $124,171$118,532 $38,058$0 $000
2022 · Form 990 period ending 2022-12-31 · view filing · original 990 ↗
$73,520$36,178 $114,540$108,901 $73,520$0 $000
2021 · Form 990 period ending 2021-12-31 · view filing · original 990 ↗
$2,463$3,189 $77,198$71,559 $2,463$0 $000
2020 · Form 990 period ending 2020-12-31 · view filing · original 990 ↗
$26,783$12,015 $77,924$72,285 $26,783$0 $000
2019 · Form 990 period ending 2019-12-31 · view filing · original 990 ↗
$41,154$30,211 $63,156$57,517 $41,154$0 $003
2018 · Form 990 period ending 2018-12-31 · view filing · original 990 ↗
$84,599$33,971 $52,213$46,574 $84,599$0 $000
2017 · Form 990 period ending 2017-12-31 · view filing · original 990 ↗
$19,019$26,764 $1,585-$4,054 $19,019$0 $000
2016 · Form 990 period ending 2016-12-31 · view filing · original 990 ↗
$9,959$27,962 $9,330$3,691 $9,959$0 $000
2015 · Form 990 period ending 2015-12-31 · view filing · original 990 ↗
$15,983$6,917 $27,333$21,694 $15,983$0 $000
2014 · Form 990 period ending 2014-12-31 · view filing · original 990 ↗
$16,998$11,966 $17,728$12,628 $16,998$0 $000

Funders of this organization

Not reported: no grants to this organization appear in the filings we have (tax years 2010 to 2025).

Similar organizations

Ranked without any AI: same NTEE code first, then the same NTEE group; then revenue within 2x, 5x or 10x; then the same state; then similar name and mission text. Same state only · More (100)

OrganizationStateNTEELatest revenueLatest expensesTop-paid titleTop payWhy similar
PIETROS FIGHT INCNYG50 $41,557$74,213 CO PRESIDENT$0 Same NTEE code G50, revenue within 2x, same state
WISCONSIN ORTHOPAEDIC SOCIETYWIG50 $63,337$51,524 EXECUTIVE DIRECTOR$0 Same NTEE code G50, revenue within 2x
MINIMALLY INVASIVE NEUROSURGICAL SOCIETYMIG50 $76,100$96,342 PRESIDENT$0 Same NTEE code G50, revenue within 2x
PELVIC PAIN SOCIETYMNG50 $70,942$141,984 Chair$0 Same NTEE code G50, revenue within 2x
THE SOCIETY ON NEUROIMMUNE PHARMACOLOGY INCFLG50 $75,825$128,195 Meeting Chair (Thru 6/25)$0 Same NTEE code G50, revenue within 2x
UNITED SPINAL ASSOCIATION ATLANTA INCGAG50 $100,779$62,876 President$0 Same NTEE code G50, revenue within 2x
UNITED SPINAL ASSOCIATION ILLINOIS CHAPTERILG50 $88,770$113,070 Executive Director$67,374 Same NTEE code G50, revenue within 2x
NATIONAL SPASMODIC TORTICOLLIS ASSOCIATIONCAG50 $54,564$231,431 President$0 Same NTEE code G50, revenue within 2x
GREATER KANSAS CITY SPINAL CORD INJURY ASSOCIATIONMOG50 $99,822$56,957 President$0 Same NTEE code G50, revenue within 2x
MS CENTER OF BOSTON A NONPROFIT CORPORATIONMAG50 $72,188$43,353 TREASURER/DIRECTOR$0 Same NTEE code G50, revenue within 2x
UNITED SPINAL ASSOCIATION INCPAG50 $68,092$49,263 PRESIDENT$0 Same NTEE code G50, revenue within 2x
WALTER BOUGHTON FOUNDATION INCILG50 $71,750$72,051 Director$0 Same NTEE code G50, revenue within 2x
CENTRAL COAST QUALITY OF LIFE PROGRAMSCAG50 $89,639$95,706 EXECUTIVE DIREC$20,160 Same NTEE code G50, revenue within 2x
AMERICAN MYALGIC ENCEPHALOMYELITIS & CHRONIC FATIGUE SYNDROME SOCIETYMAG50 $56,607$85,338 President$0 Same NTEE code G50, revenue within 2x
LAMPLIGHTERS ORTHOPAEDIC ASSOCIATIONILG50 $126,537$117,353 Vice-Chair$0 Same NTEE code G50, revenue within 2x
ADCY5 ORG INCCAG50 $87,121$2,553 President$0 Same NTEE code G50, revenue within 2x
UNITED CANCER SOCIETYTXG50 $140,923$101,476 President$0 Same NTEE code G50, revenue within 2x
UNITED SPINAL ASSOCIATION INCNCG50 $108,439$101,241 CHAIRPERSON$0 Same NTEE code G50, revenue within 2x
UNITED SPINAL ASSOCIATION INCVAG50 $135,590$63,837 Executive Dir.$20,000 Same NTEE code G50, revenue within 2x
PARKINSONS EDUCATION & SUPPORT GROUP OF SUSSEX COUNTYDEG50 $99,173$64,612 BOARD MEMBER$0 Same NTEE code G50, revenue within 2x
THE SUSIE FOUNDATION INCCTG50 $82,583$79,930 Founder & Executive Director$5,000 Same NTEE code G50, revenue within 2x
THE JOSHUA FRASE FOUNDATION FOR CONGENITAL MYOPATHY RESEARCH INCFLG50 $138,527$26,715 President$0 Same NTEE code G50, revenue within 2x
FOUNDATION FOR MEDICAL EDUCATION & RESEARCH INCNJG50 $69,086$68,935 PRESIDENT$0 Same NTEE code G50, revenue within 2x
LAGUNA BEACH ROTARY CLUB FOUNDATIONCAG50 $72,788$43,467 President$0 Same NTEE code G50, revenue within 2x
PHILIPPINES PARKINSONS FOUNDATION U SA INCNJG50 $52,315$380 President$0 Same NTEE code G50, revenue within 2x

Who funds organizations like this

Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).

GrantorTypeTotal givenGrantsOrganizations fundedYearsWhich ones
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$774,22044 222016–2024 NEUROVASCULAR FOUNDATION; HOPE FOR CHILDREN RESEARCH FOUNDATION INC; FRIENDS OF PARKINSONS INC; TALIA DUFF FOUNDATION INC and 18 more
HAMPTON ROADS COMMUNITY FOUNDATION DAF sponsor$547,50020 12014–2021 VIRGINIA GENTLEMENS FOUNDATION INC
TIDEWATER JEWISH FOUNDATION INC DAF sponsor$514,5006 12015–2023 VIRGINIA GENTLEMENS FOUNDATION INC
FORGOOD INC DAF sponsor$345,56729 122010–2023 HOPE FOR CHILDREN RESEARCH FOUNDATION INC; THE JOSHUA FRASE FOUNDATION FOR CONGENITAL MYOPATHY RESEARCH INC; TALIA DUFF FOUNDATION INC; AMERICAN MYALGIC ENCEPHALOMYELITIS & CHRONIC FATIGUE SYNDROME SOCIETY and 8 more
DONOR ADVISED CHARITABLE GIVING DAF sponsor$286,28620 102015–2024 MONTEREY BAY POWER OVER PARKINSONS INC; GRAINS OF GOOD FOUNDATION; VIRGINIA GENTLEMENS FOUNDATION INC; PICKALS FOUNDATION INC and 6 more
THE BATCHELOR FOUNDATION INC Private foundation$285,0006 12012–2020 STAND AMONG FRIENDS INC
CHAMI FAMILY FOUNDATION Private foundation$280,0004 12022–2025 CAMER RAND FUND INC
JEWISH FEDERATION OF GREATER ANN ARBOR DAF sponsor$270,0006 12011–2018 STAND AMONG FRIENDS INC
WACO FOUNDATION DAF sponsor$162,0096 12014–2020 UNITED CANCER SOCIETY
THE COMMUNITY FOUNDATION FOR NORTHEAST FLORIDA INC DAF sponsor$153,0007 22021–2024 THE JOSHUA FRASE FOUNDATION FOR CONGENITAL MYOPATHY RESEARCH INC; JAX HOPE INC
THE COMMUNITY FOUNDATION INC DAF sponsor$150,0005 12020–2024 UNITED SPINAL ASSOCIATION INC
AMERICAN ONLINE GIVING FOUNDATION INC DAF sponsor$137,12212 72021–2024 GRAINS OF GOOD FOUNDATION; THE SUSIE FOUNDATION INC; LILLY AND BLAIR FOUNDATION; MS - JUST KEEP MOVING INC and 3 more
SILICON VALLEY COMMUNITY FOUNDATION DAF sponsor$91,3004 22019–2024 ONE STEP CLOSER THERAPEUTIC RIDING; VIRGINIA GENTLEMENS FOUNDATION INC
MORGAN STANLEY GLOBAL IMPACT FUNDING TRUST INC DAF sponsor$82,4008 52019–2024 WALTER BOUGHTON FOUNDATION INC; CAMER RAND FUND INC; STRONGWHENWEAK; CAMP MILTON INC and 1 more
PAYPAL CHARITABLE GIVING FUND DAF sponsor$72,1189 72018–2024 DAMIEN THE LEPER SOCIETY INC; LILLY AND BLAIR FOUNDATION; AMERICAN MYALGIC ENCEPHALOMYELITIS & CHRONIC FATIGUE SYNDROME SOCIETY; MILLER MCNEIL WOODRUFF FOUNDATION and 3 more

The full list · all similar organizations

Where the money went

Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

2025 · Form 990 · $64,335 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)CONFERENCE FEES $60,303$60,303-- 93.7%
Fees: accounting $3,396$3,396-- 5.3%
Other (as described)BANK FEES $400-$400- 0.6%
Fees: other services $236$236-- 0.4%
Total$64,335100%

View the filing

2024 · Form 990 · $14,314 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)CONFERENCE FEES $10,360$10,360-- 72.4%
Fees: accounting $3,381$3,381-- 23.6%
Other (as described)BANK FEES $360-$360- 2.5%
Fees: other services $213$213-- 1.5%
Total$14,314100%

View the filing

2023 · Form 990 · $28,427 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)CONFERENCE FEES $11,220$11,220-- 39.5%
Other (as described)TRAVEL $8,975$8,975-- 31.6%
Other (as described)BUSINESS MEETINGS $4,585$4,585-- 16.1%
Fees: accounting $3,031$3,031-- 10.7%
Other (as described)BANK FEES $400-$400- 1.4%
Fees: other services $216$216-- 0.8%
Total$28,427100%

View the filing

2022 · Form 990 · $36,178 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)CONFERENCE FEES $21,467$21,467-- 59.3%
Other (as described)TRAVEL $10,136$10,136-- 28.0%
Other (as described)BUSINESS MEETINGS $2,173$2,173-- 6.0%
Fees: accounting $856$856-- 2.4%
Other (as described)GIFTS $768$768-- 2.1%
All other expenses $555-$555- 1.5%
Fees: other services $223$223-- 0.6%
Total$36,178100%

View the filing

2021 · Form 990 · $3,189 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Fees: accounting $2,200$2,200-- 69.0%
Fees: other services $522$522-- 16.4%
Other (as described)BANK FEES $360-$360- 11.3%
Other (as described)FILING FEES $75-$75- 2.4%
Other (as described)TRAVEL $32$32-- 1.0%
Total$3,189100%

View the filing

2020 · Form 990 · $12,015 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)FELLOWSHIP EXPENSES INC $7,300$7,300-- 60.8%
Other (as described)OTHER CONFERENCE EXPENS $3,691$3,691-- 30.7%
Other (as described)BANK FEES $475-$475- 4.0%
Fees: other services $460$460-- 3.8%
Other (as described)FILING FEES $75-$75- 0.6%
All other expenses $14$14-- 0.1%
Total$12,015100%

View the filing

2019 · Form 990 · $30,211 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)FELLOWSHIP EXPENSES INC $26,067$26,067-- 86.3%
Other (as described)OTHER CONFERENCE EXPENS $3,283$3,283-- 10.9%
Other (as described)BANK FEES $594-$594- 2.0%
Fees: other services $217$217-- 0.7%
Other (as described)FILING FEES $50-$50- 0.2%
Total$30,211100%

View the filing

2018 · Form 990 · $33,971 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)FELLOWSHIP EXPENSES INC $26,044$26,044-- 76.7%
Fees: other services $6,200$6,200-- 18.3%
Other (as described)OTHER CONFERENCE EXPENS $1,104$1,104-- 3.2%
Other (as described)BANK FEES $573$573-- 1.7%
Other (as described)FILING FEES $50$50-- 0.1%
Total$33,971100%

View the filing

2017 · Form 990 · $26,764 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)FELLOWSHIP EXPENSES INC $14,110-$14,110- 52.7%
Fees: other services $10,600-$10,600- 39.6%
Other (as described)BOARD MEETING EXPENSES $1,205-$1,205- 4.5%
Other (as described)BANK FEES $450-$450- 1.7%
Other (as described)GIFTS $227-$227- 0.8%
All other expenses $172-$172- 0.6%
Total$26,764100%

View the filing

2016 · Form 990 · $27,962 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)FELLOWSHIP EXPENSES $25,727-$25,727- 92.0%
Fees: accounting $1,010-$1,010- 3.6%
Other (as described)BOARD MEETING EXPENSES $817-$817- 2.9%
Other (as described)BANK FEES $225-$225- 0.8%
Other (as described)WEBSITE EXPENSES $183-$183- 0.7%
Total$27,962100%

View the filing

2015 · Form 990 · $6,917 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Fees: other services $6,212-$6,212- 89.8%
Other (as described)MISCELLANEOUS $540-$540- 7.8%
Other (as described)BANK FEES $165-$165- 2.4%
Total$6,917100%

View the filing

2014 · Form 990 · $11,966 spent · pay $0 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)FELLOWSHIP EXPENSE $6,161-$6,161- 51.5%
Fees: other services $4,858-$4,858- 40.6%
Other (as described)WEB DESIGN $734-$734- 6.1%
Other (as described)BANK FEES $213-$213- 1.8%
Total$11,966100%

View the filing