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SANSUM DIABETES RESEARCH INSTITUTE

EIN 95-1684086 SANTA BARBARA, CA

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Revenue 2025
$6,303,337
Expenses 2025
$7,162,681

Program services were 73.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
H05
Classification
8000
Street
2219 BATH ST

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2025

Mission

Dedicated to improving the lives of people impacted by diabetes through research, education and care.

  • ResearchClinical Research Type 1 DiabetesSansum Diabetes Research Institute (SDRI) is a nonprofit organization dedicated to improving the lives of people impacted by diabetes through clinical research, education, and specialized patient care. During 2025, SDRI initiated 13 clinical research trials involving 197 individual participants. These studies evaluated new technologies, medications, and treatment approaches intended to improve diabetes management and health outcomes.Research activities included automated insulin delivery systems, continuous glucose monitoring, inhaled insulin therapies, GLP-1 medications, ketone and lactate monitoring, digital health tools, and other emerging diabetes technologies. SDRI collaborated with leading diabetes technology and pharmaceutical companies to conduct research that supports the development of safer and more effective treatments for people living with diabetes.During 2025, SDRI also launched Screen & Support, a community-based type 1 diabetes early detection program. Through autoantibody screening, education, monitoring, and follow-up care, the program identifies children and adults at increased risk for developing type 1 diabetes before symptoms occur. Earlier identification helps reduce the likelihood of diagnosis during diabetic ketoacidosis (DKA), provides families with education and support, and expands access to therapies that may delay progression to insulin-dependent disease. SDRI also continued leading the California Type 1 Diabetes Screening Collaborative to expand early detection efforts throughout California.Clinical Research Type 2 DiabetesSDRI continued research designed to improve treatment options and clinical outcomes for individuals living with type 2 diabetes. During 2025, the SDRI participated in studies evaluating automated insulin delivery systems, continuous glucose monitoring technologies, and emerging therapeutic approaches intended to improve glycemic control while reducing the burden of diabetes management.Research findings contributed to the growing body of evidence supporting advanced diabetes technologies for adults with type 2 diabetes and included participation from diverse populations to improve the applicability of study findings across communities.

    Expenses $4,634,525 · Revenue $1,969,111

  • Education and Community OutreachCommunity education is an essential component of SDRI's charitable mission. SDRI provides evidence-based education, peer support, and culturally responsive programs that improve diabetes prevention and self-management.During 2025, SDRI continued Ocho Pasos a la Buena Salud, a Spanish-language diabetes prevention and self-management program led by trained Community Health Workers (Promotoras). The program provides culturally appropriate education on nutrition, physical activity, and diabetes self-management while addressing barriers to healthcare access.SDRI also expanded education and support through One Talk, LADA Talk, diabetes technology training, bilingual support groups, community outreach events, and Back-to-School educational programming. These programs improve diabetes knowledge, increase self-management skills, reduce diabetes-related distress, and strengthen community support for individuals and families affected by diabetes.

    Expenses $367,818 · Revenue $68,073

  • Clinical CareSDRI provides specialized outpatient clinical care in diabetes in pregnancy, pediatric diabetes, and adult endocrinology.During 2025, SDRI expanded its Diabetes in Pregnancy Program to preserve access to specialized care following changes in local maternal health services. SDRI assumed responsibility for caring for approximately 100 additional patients, with particular emphasis on serving under-resourced and underrepresented Latina women throughout Santa Barbara County.Clinical services include individualized diabetes management, nutrition counseling, continuous glucose monitoring support, medication management, diabetes education, and coordinated care with obstetric and maternal-fetal medicine providers. SDRI also provides culturally responsive and bilingual services to improve maternal and infant health outcomes.SDRI's pediatric diabetes program provides comprehensive education, technology training, behavioral support, and ongoing clinical care that helps children, adolescents, and families safely manage diabetes and successfully transition to lifelong self-management.

    Expenses $279,669 · Revenue $50,045

  • Research InfrastructureDuring 2025, SDRI completed renovation of its 18,000-square-foot research, clinical care, and education center. The renovated facility increased organizational capacity by providing dedicated research suites, expanded clinical space, industry collaboration areas, a teaching kitchen, a DEXA research suite, and community education facilities. These improvements enhance SDRI's ability to conduct clinical research, provide specialized patient care, and deliver diabetes education programs that benefit the community.Summary of Public BenefitThrough its integrated programs in clinical research, specialized clinical care, early detection, education, and community outreach, SDRI advances the early detection, treatment, and management of diabetes while improving access to evidence-based care for children, adults, pregnant individuals, and underserved populations. These activities further SDRIs charitable mission by improving health outcomes, expanding access to specialized services, and advancing diabetes science for the benefit of the public.

As filed on the 2025 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Elizabeth Thompson

    CEO

    Total calculated
    $349,314
    From this org
    $329,755
    From related orgs
    $0
    Other
    $19,559
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $329,755
    Bonus
    not reported
    Other
    not reported
    Deferred
    $16,488
    Nontaxable benefits
    $3,071
    Filer's total
    $349,314
  • Kristin Castorino DO

    Research Physician

    Total calculated
    $290,760
    From this org
    $264,433
    From related orgs
    $0
    Other
    $26,327
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $264,433
    Bonus
    not reported
    Other
    not reported
    Deferred
    $13,520
    Nontaxable benefits
    $12,807
    Filer's total
    $290,760
  • Kristen Nelson

    Dir Clinical Rese

    Total calculated
    $270,167
    From this org
    $256,529
    From related orgs
    $0
    Other
    $13,638
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $256,529
    Bonus
    not reported
    Other
    not reported
    Deferred
    not reported
    Nontaxable benefits
    $13,638
    Filer's total
    $270,167
  • Dr Andrew Rhinehart

    CEO/CMO

    Total calculated
    $237,257
    From this org
    $230,465
    From related orgs
    $0
    Other
    $6,792
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $230,465
    Bonus
    not reported
    Other
    not reported
    Deferred
    not reported
    Nontaxable benefits
    $6,792
    Filer's total
    $237,257
  • Kara Hornbuckle

    VP Development and Public Affairs

    Total calculated
    $180,584
    From this org
    $168,763
    From related orgs
    $0
    Other
    $11,821
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $168,763
    Bonus
    not reported
    Other
    not reported
    Deferred
    $9,500
    Nontaxable benefits
    $2,321
    Filer's total
    $180,584
  • Sarintha Logan

    Clinical Research

    Total calculated
    $178,932
    From this org
    $161,001
    From related orgs
    $0
    Other
    $17,931
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $161,001
    Bonus
    not reported
    Other
    not reported
    Deferred
    $8,172
    Nontaxable benefits
    $9,759
    Filer's total
    $178,932
  • Trisha Purkey

    Clinical Research

    Total calculated
    $176,056
    From this org
    $156,913
    From related orgs
    $0
    Other
    $19,143
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $156,913
    Bonus
    not reported
    Other
    not reported
    Deferred
    $7,899
    Nontaxable benefits
    $11,244
    Filer's total
    $176,056
  • Melody Lung

    Clinical Research

    Total calculated
    $148,976
    From this org
    $136,826
    From related orgs
    $0
    Other
    $12,150
    Hours/week
    40
  • Olivia Watt

    Mgr Lab/Research

    Total calculated
    $139,105
    From this org
    $130,214
    From related orgs
    $0
    Other
    $8,891
    Hours/week
    40
  • James Sloan

    President

    Total calculated
    $0
    Hours/week
    4
  • Matthew Rowe CIMA

    Vice President

    Total calculated
    $0
    Hours/week
    2
  • Flint Ogle

    Treasurer

    Total calculated
    $0
    Hours/week
    2
  • Elena Engel

    Secretary

    Total calculated
    $0
    Hours/week
    2
  • Joan Doell Arnold

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Miguel Avila

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Daniel Berger MD

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Anthony Castillo

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Daren Dickerson

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Lindsey Duca PhD

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Lynn Fitzgibbons MD

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Yvette Giller

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Steven Jung Esq

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Norman Kurland

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Robert Nagy MD

    Trustee

    Total calculated
    $0
    Hours/week
    1
  • Michael Paskin

    Trustee

    Total calculated
    $0
    Hours/week
    1

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2025
    Revenue
    $6,303,337
    Expenses
    $7,162,681
    Contributions
    $2,934,028
    Grants paid
    $0
  • 2023
    Revenue
    $10,639,114
    Expenses
    $6,651,715
    Contributions
    $6,445,750
    Grants paid
    $0
  • 2023
    Revenue
    $10,639,114
    Expenses
    $6,651,715
    Contributions
    $6,445,750
    Grants paid
    $0
  • 2022
    Revenue
    $8,154,412
    Expenses
    $5,669,158
    Contributions
    $5,265,574
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $11,475,472
    Expenses
    $5,271,529
    Assets (EOY)
    $20,925,060
  • 2020 · 990

    Revenue
    $6,046,700
    Expenses
    $4,699,534
    Assets (EOY)
    $17,971,488
  • 2019 · 990

    Revenue
    $4,170,902
    Expenses
    $5,138,512
    Assets (EOY)
    $15,270,515
  • 2019 · 990

    Revenue
    $4,170,902
    Expenses
    $5,138,512
    Assets (EOY)
    $15,270,515
  • 2018 · 990

    Revenue
    $4,284,862
    Expenses
    $4,858,981
    Assets (EOY)
    $14,944,833
  • 2018 · 990

    Revenue
    $4,284,862
    Expenses
    $4,858,981
    Assets (EOY)
    $14,944,833
  • 2018 · 990

    Revenue
    $4,284,862
    Expenses
    $4,858,981
    Assets (EOY)
    $14,944,833
  • 2018 · 990

    Revenue
    $4,284,862
    Expenses
    $4,858,981
    Assets (EOY)
    $14,944,833
  • 2016 · 990

    Revenue
    $3,146,634
    Expenses
    $3,554,163
    Assets (EOY)
    $13,379,944
  • 2015 · 990

    Revenue
    $3,646,302
    Expenses
    $3,798,215
    Assets (EOY)
    $13,633,395

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.