STRATEGY STUDIO / PUBLIC DATA EXPLORER

US THROMBOTIC MICROANGIOPATHY ALLIANCE

Cite this

Plain text US THROMBOTIC MICROANGIOPATHY ALLIANCE. Strategy Studio, nonprofit organization profile, tax years 2021–2024. https://strategystudio.org/org/831768842. Retrieved 2026-10-19.

APA Strategy Studio. (n.d.). US THROMBOTIC MICROANGIOPATHY ALLIANCE [Nonprofit organization profile; tax years 2021–2024]. Retrieved October 19, 2026, from https://strategystudio.org/org/831768842

MLA “US THROMBOTIC MICROANGIOPATHY ALLIANCE.” Strategy Studio, tax years 2021–2024, https://strategystudio.org/org/831768842. Accessed 19 Oct. 2026.

Retrieved 2026-10-19; covers tax years 2021–2024. Data: Strategy Studio, CC BY 4.0.

2024 · Form 990 · revenue $595K · expenses $790K · assets $1.8M

Also known as
ALLIANCE
EIN
83-1768842
Address
8056 BAIRD RD, GROVEPORT, OH 43125-9789
Website
WWW.USTMA.ORG
NTEE code
G43
Subsection
501(c)(3)
Ruling year
2019
Cross-check
ProPublica Nonprofit Explorer

Mission

TO IMPROVE OUTCOMES FOR PATIENTS WITH THROMBOTIC MICROANGIOPATHY THROUGH COLLABORATION AND ADVOCACY

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).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

1 person paid across every filing: current people first, then by total pay from this organization. Organizations counts every nonprofit each person appears on.

NameLatest titleYearsLatest year payTotal pay from hereOrganizations
Clare Martin OPERATIONS D2021-2024 $136,772$375,810 1

Officers and directors, no compensation reported

6 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
Marshall Mazepa MEDICAL DIRE2021-2024 Not reported $0 reported 1
Shruti Chaturvedi MEDICAL DIRE2021-2024 Not reported $0 reported 1
Ara Metjian MEDICAL DIRE2022-2024 Not reported $0 reported 1
Satheesh Chonat MEDICAL DIRE2022-2024 Not reported $0 reported 1
Spero Cataland MEDICAL DIRE2021-2024 Not reported $0 reported 1
Camila Masias (former) MEDICAL DIRECTOR2021 5 $0 reported 1

People by year

2024 · 6 people listed · 1 paid, $137K · 2 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLARE MARTIN OPERATIONS D40 $136,772$0$0 $136,7721
MARSHALL MAZEPA MEDICAL DIRE- $0$0$0 $01
SHRUTI CHATURVEDI MEDICAL DIRE- $0$0$0 $01
ARA METJIAN MEDICAL DIRE- $0$0$0 $01
SATHEESH CHONAT MEDICAL DIRE- $0$0$0 $01
SPERO CATALAND MEDICAL DIRE- $0$0$0 $01
2023 · 6 people listed · 1 paid, $108K · 2 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLARE MARTIN OPERATIONS D40 $107,500$0$0 $107,5001
MARSHALL MAZEPA MEDICAL DIRE5 $0$0$0 $01
SHRUTI CHATURVEDI MEDICAL DIRE5 $0$0$0 $01
ARA METJIAN MEDICAL DIRE5 $0$0$0 $01
SATHEESH CHONAT MEDICAL DIRE5 $0$0$0 $01
SPERO CATALAND MEDICAL DIRE5 $0$0$0 $01
2022 · 6 people listed · 1 paid, $90K · 2 employees · 25 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLARE MARTIN OPERATIONS D40 $90,000$0$0 $90,0001
MARSHALL MAZEPA MEDICAL DIRE5 $0$0$0 $01
SHRUTI CHATURVEDI MEDICAL DIRE5 $0$0$0 $01
ARA METJIAN MEDICAL DIRE5 $0$0$0 $01
SATHEESH CHONAT MEDICAL DIRE5 $0$0$0 $01
SPERO CATALAND MEDICAL DIRE5 $0$0$0 $01
2021 · 5 people listed · 1 paid, $42K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLARE MARTIN DIRECTOR OF OPERATIONS5 $41,538-$0 $41,5381
SPERO CATALAND MEDICAL DIRECTOR5 $0-$0 $01
MARSHALL MAZEPA MEDICAL DIRECTOR5 $0-$0 $01
SHRUTI CHATURVEDI MBBS MEDICAL DIRECTOR5 $0-$0 $01
CAMILA MASIAS MEDICAL DIRECTOR5 $0-$0 $01

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
2024 · Form 990 period ending 2024-12-31 · view filing · original 990 ↗
$595,494$789,565 $1,823,162$1,779,511 $241,034$564,124 $136,7722-
2023 · Form 990 period ending 2023-12-31 · view filing · original 990 ↗
$1,860,040$669,026 $2,053,500$1,984,767 $578,613$1,283,354 $107,5002-
2022 · Form 990 period ending 2022-12-31 · view filing · original 990 ↗
$950,114$300,712 $797,343$797,343 $949,292$0 $90,000225
2021 · Form 990EZ period ending 2021-12-31 · view filing · original 990 ↗
$191,849$82,317 $147,538$147,538 $1,178$190,667 ---

Funders of this organization

1 grantor reported grants to this organization, $236 in all, tax years 2020 to 2023. Exact: the grantor wrote this organization's EIN. Fuzzy: the grantor wrote only a name (foundations' 990-PF has no EIN field), matched to the same or a near-identical name in the same state; the name as filed is shown. From the latest return for each grantor and year, so amended returns aren't counted twice. CSV

GrantorTypeMatchYears givenGrantsTotalLatest yearLatest year's amountGrants
AMAZONSMILE FOUNDATION Private foundation Fuzzy filed as “US THROMBOTIC MICROANGIOPATHY ALLIANCE” 2020-2023 4$236 2023$47
show

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
MAKE THEM KNOW YOUR NAME FOUNDATIONOHG43 $582,768$618,736 VICE PRESIDENT$0 Same NTEE code G43, revenue within 2x, same state
MCORE FOUNDATIONOHG43 $317,710$317,526 Executive Director$85,239 Same NTEE code G43, revenue within 2x, same state
BLACK HEART ASSOCIATIONTXG43 $1,006,178$1,037,850 CEO & Founder$70,000 Same NTEE code G43, revenue within 2x
INTERNATIONAL CARDIAC ALLIANCE INCVTG43 $874,106$903,060 EXECUTIVE DIR.$116,100 Same NTEE code G43, revenue within 2x
CHILDRENS CARDIOMYOPATHY FOUNDATION INCNJG43 $996,165$714,539 EXECUTIVE DI$225,807 Same NTEE code G43, revenue within 2x
JOHN RITTER FOUNDATION FOR AORTIC HEALTHCAG43 $1,042,070$1,073,293 CEO$198,375 Same NTEE code G43, revenue within 2x
TEXAS CENTRAL HEMOPHILIA ASSOC INCTXG43 $418,355$421,020 EXECUTIVE DIRECTOR$67,083 Same NTEE code G43, revenue within 2x
NATIONAL FORUM FOR HEART DISEASEDCG43 $528,898$1,683,839 Exec. Director$361,432 Same NTEE code G43, revenue within 2x
BREAST CANCER SOLUTIONSCAG43 $355,808$330,102 Executive Dir.$69,111 Same NTEE code G43, revenue within 2x
MIGHTY OAKES HEART FOUNDATIONMOG43 $805,107$955,126 EMPLOYEE$137,500 Same NTEE code G43, revenue within 2x
HEART BROTHERS FOUNDATION INCMAG43 $610,079$520,339 DIRECTOR$43,500 Same NTEE code G43, revenue within 2x
INTERNATIONAL CONSORTIUM OFCIRCULATORY ASSIST CLINICIANS A NJCAG43 $333,330$291,392 Treasurer-Past$0 Same NTEE code G43, revenue within 2x
CHILDRENS HEART FOUNDATIONNVG43 $491,469$627,097 EXECUTIVE DI$116,178 Same NTEE code G43, revenue within 2x
STROKE AWARENESS FOUNDATIONCAG43 $337,123$303,941 Executive Dir.$144,188 Same NTEE code G43, revenue within 2x
INTERNATIONAL SOCIETY FOR THE STUDY OF VASCULAR ANOMALIESWIG43 $875,060$828,786 PRESIDENT$0 Same NTEE code G43, revenue within 2x
MIDWESTERN VASCULAR SURGICAL SOCIETYMAG43 $418,065$400,896 COUNCILOR$0 Same NTEE code G43, revenue within 2x
PITUITARY SOCIETY INCORPORATEDCAG43 $753,709$483,415 PRESIDENT$0 Same NTEE code G43, revenue within 2x
INTERNATIONAL ATHEROSCLEROSIS SOCIETYDCG43 $569,686$704,259 PRESIDENT$8,000 Same NTEE code G43, revenue within 2x
JOASH MEDICAL FOUNDATIONCAG43 $548,900$555,524 Director$0 Same NTEE code G43, revenue within 2x
SOUTHERN ASSOC FOR VASCULAR SURGERY INCALG43 $482,296$338,622 PAST PRESIDE$0 Same NTEE code G43, revenue within 2x
CARDIAC NEURODEVELOPMENTAL OUTCOME COLLABORATIVEVAG43 $319,183$202,446 CO-CHAIR$0 Same NTEE code G43, revenue within 2x
PARENT HEART WATCHFLG43 $336,780$289,231 EXECUTIVE DIRECTOR$65,000 Same NTEE code G43, revenue within 2x
AMERICAN JOURNAL OF HYPERTENSION LTDNYG43 $648,548$850,481 MANAGING EDITOR$130,315 Same NTEE code G43, revenue within 2x
GOOD SAMARITAN INSTITUTE FOR RESEARCH AND EDUCATIONCAG43 $435,247$503,648 SYSTEM PRESIDENT & CEO$2,562,270 Same NTEE code G43, revenue within 2x
CENTER FOR VASCULAR AWARENESS INCNYG43 $563,995$594,921 DIRECTOR OF OPERATIONS$136,681 Same NTEE code G43, 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
DONOR ADVISED CHARITABLE GIVING DAF sponsor$3,229,38379 202014–2024 ANGIOGENESIS FOUNDATION INC; PPCM FUND INC; PARENT HEART WATCH; MAKE THEM KNOW YOUR NAME FOUNDATION and 16 more
NATIONAL PHILANTHROPIC TR DAF sponsor$3,193,14013 52014–2024 ANGIOGENESIS FOUNDATION INC; CHILDRENS CARDIOMYOPATHY FOUNDATION INC; SOCIETY FOR VASCULAR SURGERY FOUNDATION; PAKISTAN CHILDRENS HEART FOUNDATION NORTH AMERICA INC and 1 more
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$2,448,74387 262016–2024 HEARTGIFT FOUNDATION; PAKISTAN CHILDRENS HEART FOUNDATION NORTH AMERICA INC; THE BRETT BOYER FOUNDATION INC; INTERNATIONAL CARDIAC ALLIANCE INC and 22 more
SILICON VALLEY COMMUNITY FOUNDATION DAF sponsor$985,75910 52010–2024 HETEROTAXY CONNECTION; STROKE AWARENESS FOUNDATION; CHILDRENS HEART FOUNDATION; AHF SCHOOL OF ULTRASOUND INC and 1 more
SAGE & DICE FOUNDATION Private foundation$877,1494 12022–2025 THE BRETT BOYER FOUNDATION INC
AMERICAN ONLINE GIVING FOUNDATION INC DAF sponsor$851,62933 102019–2024 PAKISTAN CHILDRENS HEART FOUNDATION NORTH AMERICA INC; ADULT CONGENITAL HEART ASSOCIATION INC; CHILDRENS CARDIOMYOPATHY FOUNDATION INC; MCORE FOUNDATION and 6 more
NATIONAL CHRISTIAN CHARITABLE FOUNDATION DAF sponsor$841,95016 72012–2024 THE BRETT BOYER FOUNDATION INC; HEARTGIFT FOUNDATION; ADULT CONGENITAL HEART ASSOCIATION INC; CONGENITAL HEART DEFECTS FAMILIES ASSOCIATION and 3 more
WILLIS AND REBA JOHNSONS FOUNDATION Private foundation$750,0005 12020–2024 THE BRETT BOYER FOUNDATION INC
FORGOOD INC DAF sponsor$727,74645 122011–2024 JOHN RITTER FOUNDATION FOR AORTIC HEALTH; IN A HEARTBEAT INC; STROKE COMEBACK CENTER; HEART BROTHERS FOUNDATION INC and 8 more
COMMUNITY FOUNDATION OF NORTH TEXAS DAF sponsor$561,80016 22017–2024 INTERNATIONAL CARDIAC ALLIANCE INC; BLACK HEART ASSOCIATION
VANGUARD CHARITABLE ENDOWMENT PROGRAM DAF sponsor$463,92519 72020–2024 HEALTHY HEART NATION; PAKISTAN CHILDRENS HEART FOUNDATION NORTH AMERICA INC; ADULT CONGENITAL HEART ASSOCIATION INC; HEARTBRIGHT FOUNDATION and 3 more
OKLAHOMA CITY COMMUNITY FOUNDATION INC DAF sponsor$462,0007 12018–2024 ADULT CONGENITAL HEART ASSOCIATION INC
RAYMOND JAMES CHARITABLE ENDOWMENT FUND DAF sponsor$338,05016 32012–2024 HEARTGIFT FOUNDATION; BREAST CANCER SOLUTIONS; MIGHTY OAKES HEART FOUNDATION
MORGAN STANLEY GLOBAL IMPACT FUNDING TRUST INC DAF sponsor$289,50021 82014–2024 HEARTGIFT FOUNDATION; INTERNATIONAL CARDIAC ALLIANCE INC; HYPERTROPHIC CARDIOMYOPATHY ASSOCIATION; ANGIOGENESIS FOUNDATION INC and 4 more
GREATER HOUSTON COMMUNITY FOUNDATION DAF sponsor$250,15014 22014–2024 HEARTGIFT FOUNDATION; SURGEONS OF HOPE FOUNDATION INC

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.

2024 · Form 990 · $789,565 spent · pay $211,882 · grants $0 · events $23,914
LineAs describedTotalProgramManagementFundraisingShare
Office expenses $209,671-$209,671- 26.6%
Fees: legal $141,394-$141,394- 17.9%
Pay: officers, directors, trustees, key employees $136,772-$136,772- 17.3%
Travel $113,366$112,337$1,029- 14.4%
Other salaries and wages $59,083$59,083-- 7.5%
Insurance $45,742$45,742-- 5.8%
Conferences, conventions and meetings $23,914$23,914-- 3.0%
Fees: other services $21,199$21,199-- 2.7%
Other (as described)OTHER BUSINESS EXPENSES $16,669-$16,669- 2.1%
Payroll taxes $16,027-$16,027- 2.0%
Other (as described)MEALS AND ENTERTAINMENT $9,053-$9,053- 1.1%
Fees: investment management $4,160-$4,160- 0.5%
Information technology $412$412-- 0.1%
Occupancy -$2,366-$2,366-- -0.3%
Interest -$5,531-$4,924-$607- -0.7%
Total$789,565100%

View the filing

2023 · Form 990 · $669,026 spent · pay $116,009 · grants $0 · events $88,836
LineAs describedTotalProgramManagementFundraisingShare
Other (as described)P200 $126,465-$126,465- 18.9%
Travel $112,590$112,590-- 16.8%
Pay: officers, directors, trustees, key employees $107,500-$107,500- 16.1%
Fees: other services $89,648$89,128$520- 13.4%
Conferences, conventions and meetings $88,836$88,836-- 13.3%
Fees: legal $51,879-$51,879- 7.8%
Occupancy $37,779$32,886$4,893- 5.6%
Office expenses $26,403-$26,403- 3.9%
Other (as described)MEALS AND ENTERTAINMENT $10,866-$10,866- 1.6%
Payroll taxes $8,509-$8,509- 1.3%
Other (as described)OTHER BUSINESS EXPENSES $4,617-$4,617- 0.7%
Fees: investment management $2,097-$2,097- 0.3%
Other (as described)PAYROLL PROCESSING FEES $1,279-$1,279- 0.2%
Insurance $820$820-- 0.1%
Interest -$262--$262- -0.0%
Total$669,026100%

View the filing

2022 · Form 990 · $300,712 spent · pay $97,588 · grants $0 · events $36,786
LineAs describedTotalProgramManagementFundraisingShare
Travel $119,014$92,461$26,553- 39.6%
Other salaries and wages $90,653-$90,653- 30.1%
Conferences, conventions and meetings $36,786$36,786-- 12.2%
Office expenses $21,539$20,767$772- 7.2%
Other (as described)PROFESSIONAL FEES $17,323$10,613$6,710- 5.8%
Payroll taxes $6,935-$6,935- 2.3%
Fees: other services $1,919$1,919-- 0.6%
All other expenses $1,610$656$954- 0.5%
Fees: management $1,515$1,515-- 0.5%
Other (as described)PAYROLL FEES $1,464-$1,464- 0.5%
Other (as described)BANK FEES $1,099-$1,099- 0.4%
Other (as described)INSURANCE $855-$855- 0.3%
Total$300,712100%

View the filing

2021 · Form 990EZ · $82,317 spent · pay $44,716 · grants $0 · events $0
LineAs describedTotalShare
Salaries, other pay and benefits $44,716 54.3%
Other expenses (detail on Schedule O) $22,880 27.8%
Occupancy, rent, utilities, maintenance $13,296 16.2%
Fees to independent contractors $1,425 1.7%
Total$82,317100%

View the filing