Washington, D.C. · Nonprofit
HEART RHYTHM SOCIETY INC
HEART RHYTHM SOCIETY INC (Washington, D.C.) receives grants from 12 organizations whose IRS filings report $328,335 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($188,750). 3 of them have funded it in more than one year, and 63% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $23M
- Funders on record
- 12
- Grants received
- $328k
- Net assets
- $11M
What Heart Rhythm Society Inc does
Mission
To improve the care of patients by promoting education, research and optimal health care policies and standards. Vision: to end death and suffering due to heart rhythm disorders.
As stated on its FY2025 Form 990.
Programs
Meetings:hrs2025 is the society's annual meeting, convening the world's most noted experts in cardiac rhythm management. The 3-day educational hybrid event has an attendance of approximately 6,000 from 68 countries and offers over 250 educational sessions covering topics such as pacing, defibrillation, clinical arrhythmia management, ablation, pharmacology, genetics, basic science, and health policy. Participants also benefit from experiences with state-of-the-art technology in an exhibit hall featuring over 100 companies. There was also online participation available, both exclusively or as an augmentation to the in-person experience.hrx is the society's groundbreaking cardiovascular innovation event that draws an international audience of health care professionals focused on cardiovascular health and rhythm management emphasizing innovations in cardiology. This annual event featured industry champions displaying their breakthrough products to our audience of physicians and allied health professionals. The unique all-in-one room layout allowed the attendees and sponsors to interact throughout the 3-day non-ace event.
$6,683,961 spentof which $34,500 as grants$11,247,918 earned by the program36% of program spendingMarketing, communications & membership: the society represents over 7,500 heart rhythm professionals in more than 90 countries. It facilitates peer to peer education, elevates science within the field of electrophysiology, and raises awareness of heart rhythm disorders, including sudden cardiac arrest, atrial fibrillation and heart failure. Heart rhythm, heart rhythm case reports, cardiovascular digital health journal and heart rhythm o2 are the official publications of the society. Hrsonline.org, heartrhythm.com, cardiq.org, upbeat.org, heartrhythm365.org, and experiencehrx.com are the official websites of the society.
$5,335,507 spentof which $2,000 as grants$2,786,989 earned by the program28% of program spendingEducation:the heart rhythm society provides learning experiences for heart rhythm professionals based on clinical practice data, resulting in improved professional competence, clinical practice, and care of patients with heart rhythm disorders. In this effort, the society uses innovative teaching methods and advanced technologies to provide superior year-round education including live courses and distance learning. The society awards research fellowship scholarships to individuals interested in clinical and basic research related to the latest advances in electrophysiology.
$6,227,455 spentof which $207,500 as grants$1,623,289 earned by the program33% of program spendingHealth, policy, and other
$549,167 spent$768,791 earned by the program3% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $18,796,090.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $19M to $15M (−22%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2021 5%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 7 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Patricia A Blake
Chief executive officer
Board chair
Daniel P Morin Md Mph Fhrs
Abstract chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base narrowed from 4 funders to 2 funders, grant income fell $32k → $9k.
2 of 12 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 63% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of HEART RHYTHM SOCIETY INC’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
HEART RHYTHM SOCIETY INC leans on a few funders — its largest provides 57% of grant income and the top three 82%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
78% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund HEART RHYTHM SOCIETY INC.
Largest funder’s share by year: 2017 54% · 2019 52% · 2020 90% · 2021 100% · 2022 91% · 2023 61% — growing more concentrated.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
0% of HEART RHYTHM SOCIETY INC's funders are still giving 3 years after their first grant; 25% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
63% of HEART RHYTHM SOCIETY INC's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $123k that is directly attributable, 100% of it comes from funders outside Washington, D.C., across 5 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $206k arriving through sponsors registered in 2 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like HEART RHYTHM SOCIETY INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Washington, D.C.
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
82% of spending goes to programs.
Governance
Public support
82%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 29 states
Part of a family of 4 related entities
- Heart Rhythm Advocates Foundation · exempt
- International Board of Heart Rhythm Examiners Inc · exempt
- Heart Rhythm Advocates · exempt
- Hrs Consulting Services Inc · corp_trust
Screen this organization
A dated, signed PDF of the compliance screen for HEART RHYTHM SOCIETY INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds HEART RHYTHM SOCIETY INC?
- HEART RHYTHM SOCIETY INC (Washington, D.C.) receives grants from 12 organizations whose IRS filings report $328,335 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($188,750). 3 of them have funded it in more than one year, and 63% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does HEART RHYTHM SOCIETY INC have?
- IRS filings report 12 organizations giving $328,335 in grants to HEART RHYTHM SOCIETY INC, 3 of which have funded it in more than one year.
- Who is the largest funder of HEART RHYTHM SOCIETY INC?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $188,750 in grants. The full list of funders is on this page.
- How can an organization like HEART RHYTHM SOCIETY INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Washington, D.C.. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 12 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing