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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 20-4339506

SOUTH DAKOTA ALLERGY SOCIETY

Also known as MARK E BUBAK MD GEN PTR

Tax-exempt (reinstated) · SIOUX FALLS, SD 57105

Address and contacts

Address (IRS master file)
2200 W 49TH ST STE 104, SIOUX FALLS, SD 57105-6550
In care of
% MARK BUBAK MD
Mailing address (990-N for 2025)
2200 W 49TH ST 104, SIOUX FALLS SD 57105
Principal officer (990-N for 2025)
MARK BUBAK MD, 2200 W 49TH ST 104, SIOUX FALLS SD 57105

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for SOUTH DAKOTA ALLERGY SOCIETY

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
20-4339506
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2012
Accounting year ends
December
Files
Form 990-N (e-Postcard)
Category (NTEE)
Health care (E03)

Revocation and reinstatement

Exemption revoked
May 15, 2010
Posted by the IRS
June 9, 2011
Reinstated
Effective May 15, 2010

From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: MARK BUBAK MD
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: MARK BUBAK MD
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: MARK BUBAK MD
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: MARK BUBAK MD
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2021
Officer: MARK BUBAK MD
December 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: MARK BUBAK MD
December 31, 2019≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 20-4339506).

Questions about SOUTH DAKOTA ALLERGY SOCIETY

What is the EIN of SOUTH DAKOTA ALLERGY SOCIETY?
The employer identification number (EIN) of SOUTH DAKOTA ALLERGY SOCIETY is 20-4339506.
Is SOUTH DAKOTA ALLERGY SOCIETY tax-exempt?
Yes. The IRS revoked its exemption on May 15, 2010 and reinstated it effective May 15, 2010.
Are donations to SOUTH DAKOTA ALLERGY SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SOUTH DAKOTA ALLERGY SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SOUTH DAKOTA ALLERGY SOCIETY due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SOUTH DAKOTA ALLERGY SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of SOUTH DAKOTA ALLERGY SOCIETY?
The 990-N for 2025 names MARK BUBAK MD.

Other nonprofits in SIOUX FALLS

All nonprofits in SIOUX FALLS · South Dakota · Health care