- Revenue 2025
- $29,236,883
- Expenses 2025
- $30,001,628
Program services were 91.8% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.
As filed
- Subsection
- 03
- Classification
- 1000
- Street
- 2201 26TH AVE NW
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
TO HELP PEOPLE OF ALL AGES AND ABILITIES ACCESS ORAL HEALTH SERVICES THROUGH CARE DELIVERY, CLINICAL INNOVATIONS, EDUCATIONAL PARTNERSHIPS, RESEARCH, AND ADVOCACY.
Activities or mission (Part I)
TO IMPROVE ORAL HEALTH IN THE LIVES OF PEOPLE WITH SPECIAL ACCESS NEEDS WHO FACE BARRIERS TO CARE.
-
WE SERVED 35,810 PATIENTS DURING 2025. THESE PATIENTS HAD A TOTAL OF 90,740 VISITS DURING THE YEAR. WE ALSO PERFORMED 5,899 ORAL HEALTH SCREENINGS IN RESIDENTIAL FACILITIES AND HEAD START SCHOOLS.
Expenses $26,752,149 · Revenue $26,979,232
-
THE APPLE TREE INNOVATION PROGRAM STIMULATES CREATIVE CHANGE BYDESIGNING, TESTING AND BUILDING ORAL HEALTH CARE SOLUTIONS THAT ADVANCEORAL HEALTH POLICY AND PRACTICE THROUGH BROAD-BASED COALITION BUILDINGEFFORTS. IT ALSO MANUFACTURES MOBILE DENTAL OFFICES FOR USE BY OTHERNONPROFIT DENTAL ORGANIZATIONS.
Expenses $788,209 · Revenue $166,064
As filed on the 2025 return.
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.
-
Barbara Smith MPH PhDBARBARA SMITH MPH PHD
BOARD CHAIR
- Total calculated
- $0
- Hours/week
- 1
-
Leigh DebiasseLEIGH DEBIASSE
TREASURER
- Total calculated
- $0
- Hours/week
- 1
-
Naimul Karim PhDNAIMUL KARIM PHD
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Gayle KellyGAYLE KELLY
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
James LaniganJAMES LANIGAN
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Karl SelfKARL SELF
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Diane ThorsonDIANE THORSON
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Stephen TillittSTEPHEN TILLITT
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Dr Daniel SampsonDR DANIEL SAMPSON
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Susan VoigtSUSAN VOIGT
DIRECTOR
- Total calculated
- $0
- Hours/week
- 1
-
Jim WyvellJIM WYVELL
DIRECTOR (PART YEAR)
- Total calculated
- $0
- Hours/week
- 1
-
Michael Helgeson DDSMICHAEL HELGESON DDS
CEO
- Total calculated
- $225,170
- From this org
- $207,154
- From related orgs
- $0
- Other
- $18,016
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $206,847
- Bonus
- $307
- Other
- $0
- Deferred
- $6,369
- Nontaxable benefits
- $11,647
- Filer's total
- $225,170
-
Karen EngstromKAREN ENGSTROM
COO
- Total calculated
- $170,207
- From this org
- $156,381
- From related orgs
- $0
- Other
- $13,826
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $156,381
- Bonus
- $0
- Other
- $0
- Deferred
- $4,944
- Nontaxable benefits
- $8,882
- Filer's total
- $170,207
-
Nancy SchumacherNANCY SCHUMACHER
CFO
- Total calculated
- $168,678
- From this org
- $144,613
- From related orgs
- $0
- Other
- $24,065
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $144,613
- Bonus
- $0
- Other
- $0
- Deferred
- $4,789
- Nontaxable benefits
- $19,276
- Filer's total
- $168,678
-
Aliasghar MohebbiALIASGHAR MOHEBBI
DENTIST
- Total calculated
- $527,031
- From this org
- $511,282
- From related orgs
- $0
- Other
- $15,749
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $452,013
- Bonus
- $59,269
- Other
- $0
- Deferred
- $10,500
- Nontaxable benefits
- $5,249
- Filer's total
- $527,031
-
Nathaniel CookNATHANIEL COOK
DENTIST
- Total calculated
- $264,036
- From this org
- $252,235
- From related orgs
- $0
- Other
- $11,801
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $233,281
- Bonus
- $18,954
- Other
- $0
- Deferred
- $7,494
- Nontaxable benefits
- $4,307
- Filer's total
- $264,036
-
Georgii DeryabinGEORGII DERYABIN
DENTIST
- Total calculated
- $203,338
- From this org
- $191,092
- From related orgs
- $0
- Other
- $12,246
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $191,092
- Bonus
- $0
- Other
- $0
- Deferred
- $3,976
- Nontaxable benefits
- $8,270
- Filer's total
- $203,338
-
Kathryn AndersonKATHRYN ANDERSON
DENTIST
- Total calculated
- $211,347
- From this org
- $201,067
- From related orgs
- $0
- Other
- $10,280
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $199,818
- Bonus
- $1,249
- Other
- $0
- Deferred
- $6,381
- Nontaxable benefits
- $3,899
- Filer's total
- $211,347
-
Quentin KnutsonQUENTIN KNUTSON
DENTIST
- Total calculated
- $205,206
- From this org
- $199,106
- From related orgs
- $0
- Other
- $6,100
- Hours/week
- 40
Schedule J breakdown matched by us
- Base
- $178,828
- Bonus
- $20,278
- Other
- $0
- Deferred
- $6,100
- Nontaxable benefits
- $0
- Filer's total
- $205,206
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
- $29,236,883
- Expenses
- $30,001,628
- Contributions
- $2,052,665
- Grants paid
- $0
-
2024
- Revenue
- $29,577,002
- Expenses
- $30,649,014
- Contributions
- $1,649,687
- Grants paid
- $0
-
2023
- Revenue
- $28,165,838
- Expenses
- $28,971,434
- Contributions
- $1,906,689
- Grants paid
- $0
-
2022
- Revenue
- $23,320,527
- Expenses
- $23,451,546
- Contributions
- $1,182,235
- 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
- $24,216,868
- Expenses
- $21,684,887
- Assets (EOY)
- $20,075,717
-
2020 · 990
- Revenue
- $17,906,566
- Expenses
- $17,041,385
- Assets (EOY)
- $18,686,340
-
2019 · 990
- Revenue
- $20,865,053
- Expenses
- $17,776,535
- Assets (EOY)
- $14,124,756
-
2018 · 990
- Revenue
- $18,347,284
- Expenses
- $16,752,072
- Assets (EOY)
- $11,650,045
-
2017 · 990
- Revenue
- $15,748,272
- Expenses
- $16,084,720
- Assets (EOY)
- $10,816,860
-
2016 · 990
- Revenue
- $15,963,450
- Expenses
- $16,662,741
- Assets (EOY)
- $11,416,209
-
2015 · 990
- Revenue
- $16,658,328
- Expenses
- $17,269,789
- Assets (EOY)
- $14,242,521
-
2014 · 990
- Revenue
- $14,737,366
- Expenses
- $14,243,369
- Assets (EOY)
- $14,626,739
-
2013 · 990
- Revenue
- $13,281,393
- Expenses
- $11,465,618
- Assets (EOY)
- $9,886,840
-
2012 · 990
- Revenue
- not reported
- Expenses
- $10,596,755
- Assets (EOY)
- $3,974,955
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
-
$450,000
2024 SUPPORT FOR THE REMODEL AND ESTABLISHMENT OF APPLE TREES NEW BRIGHTON COMMUNITY OUTREACH CENTER.
-
$155,000
2022 EXPAND SERVICES TO STATE PUBLIC PROGRAM ENROLLEES IN THE TWIN CITIES BY INCREASING CLINIC CAPACITY, ADDING DENTAL STAFF AND GROWING MOBILE OUTREACH TO PRESCHOOL AND SCHOOL-AGED CHILDREN.
-
$150,000
2024 SUPPORT THE REMODEL AND ESTABLISHMENT OF APPLE TREES NEW BRIGHTON COMMUNITY OUTREACH CENTER.
-
$35,000
2023 SUPPORT CHARITABLE PROGRAMS
-
DENTAL TRADE ALLIANCE FOUNDATION
$25,000
2025 Integrating oral health services into a whole-person, patient-centered accountable care organization serving people with disabilities
-
2022 The purpose of this grant is to build awareness and foster new opportunities for impactful research among oral health advocates through Apple Tree Dental's expanded Research Collaboration capacity.
-
ST MARYS REGIONAL HEALTH CENTER
$15,000
2024 PROGRAM SUPPORT
-
$12,000
2023 HEALTH AND HUMAN SERVICES
-
$10,000
2024 HEALTH AND HUMAN SERVICES
-
OPPORTUNITY SERVICES FLORIDA INC
$10,000
2024 Donation
The 10 largest by cash amount. The API serves every itemized grant.
Related organizations
From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.
Declared on its 2025 return
-
501(C)(3) · ORAL HEALTH SERVICES & EDUCATION · MN · controlled entity
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.