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Naaso the Obesity Society Inc

EIN 54-1438429 · Rockville, MD

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthStrong96 out of 100GovernanceGood75 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

As the premier scientific medical organization in the obesity field, The Obesity Society (TOS) is uniquely positioned to lead the way in advancing the science-based understanding of the causes, consequences, prevention, and treatment of obesity. The mission of The Obesity Society (TOS) is to advocate and promote the highest quality in research, clinical care, education, and policy development to address the needs of people living with obesity. In addition, TOS offers its members a community to facilitate professionalnetworking with peers in all fields related to obesity. The Obesity Society's membership is open to all individuals with a professional interest in obesity, and TOS recognizes the importance of diverse perspectives and experiences in our efforts to better understand, treat, and prevent obesity.

Income
$4.9 million
Spending
$3.1 million
Spent on programs
77%
Reserves
15.8 months of spending
Largest source of income
fees for its services, 79%
Employees
9
Volunteers
200
Highest pay
$277,817, ceo

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Strong: 96 out of 100.

  • Reserves

    35 of 35

    Spendable reserves would cover 15.8 months of spending.

  • Debt

    16 of 20

    It owes 29% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 37% of income.

  • Income trend

    15 of 15

    Income rose 48% on the year before.

  • Spending floor

    15 of 15

    77% of spending went to programs and raising each dollar of donations cost 0 cents.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Good: 75 out of 100.

  • Independent board

    25 of 25

    15 of 15 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    0 of 10

    Did not give the board a copy of this return before filing it.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • Independent check of accounts

    0 of 15

    Its accounts were not audited or reviewed by an independent accountant.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (3)
  1. $44,953 spent. Obesity Week:Annual Scientific Meeting: Annual Scientific Meeting: Our annual scientific meeting was held this year in November, and all activities were performed through the partnership entity Obesity Week, LLC with 100% of net profits returning to TOS.
  2. $318,776 spent. Obesity Journal: Obesity Journal is a monthly publication of peer-reviewed integrated studies and exploration of scientific developments in all areas of obesity-related research, including clinical investigations, obesity biology, integrated physiology, pediatric obesity, epidemiology, and genetics.
  3. $207,689 spent. Membership

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated November 6, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2024.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since September 1988.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated November 4, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.