Skip to content
ProPublica Donate
ProPublica Donate

Foundation For Advancement Of Spinal Knowledge

  • Minneapolis, MN
  • Tax-exempt since March 2005
  • EIN: 20-1628324

Organization summary

Type of Nonprofit

Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Medical Research / Nerve, Muscle, Bone Research (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$31k (2024)

Expenses
$111k (2024)

Total Assets
$195k (2024)

Total Liabilities
$264k (2024)

Source: Form 990 tax filings from 2011 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2024

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$30,971
Expenses
$111,146
Net Income
-$80,175
Net Assets
-$69,071
Notable Sources of Revenue Percent of Total Revenue
Contributions $265
0.9%
Program Services $30,688
99.1%
Investment Income $18
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $195,114
Total Liabilities $264,185
Net Assets -$69,071
Compensation
Key Employees and Officers Compensation Other
Eiman Shafa Md (President) $0 $0
Benjamin Mueller Md (Vice Preside) $0 $0
Omar Ramos Md (Secretary) $0 $0
Bayard Carlson Md (Treasurer) $0 $0
+ View more people

Document Links

990-EZ
Filed on May 12, 2025

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$31,184
Expenses
$49,076
Net Income
-$17,892
Net Assets
$11,104
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $31,166
99.9%
Investment Income $18
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $279,833
Total Liabilities $268,729
Net Assets $11,104
Compensation
Key Employees and Officers Compensation Other
Eiman Shafa Md (President) $0 $0
Benjamin Mueller Md (Vice Preside) $0 $0
Omar Ramos Md (Secretary) $0 $0
Bayard Carlson Md (Treasurer) $0 $0
+ View more people

Document Links

990-EZ
Filed on April 3, 2024

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$24,409
Expenses
$54,251
Net Income
-$29,842
Net Assets
$28,998
Notable Sources of Revenue Percent of Total Revenue
Contributions $105
0.4%
Program Services $24,291
99.5%
Investment Income $13
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $261,256
Total Liabilities $232,258
Net Assets $28,998
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0

Document Links

990-EZ
Filed on June 12, 2023

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$74,542
Expenses
$61,711
Net Income
$12,831
Net Assets
$58,840
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $74,522
100.0%
Investment Income $20
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $270,868
Total Liabilities $212,028
Net Assets $58,840
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Feb. 16, 2022

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$31,742
Expenses
$49,262
Net Income
-$17,520
Net Assets
$46,009
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $31,719
99.9%
Investment Income $23
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $203,269
Total Liabilities $157,260
Net Assets $46,009
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Feb. 9, 2021

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$79,518
Expenses
$56,731
Net Income
$22,787
Net Assets
$63,529
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $79,494
100.0%
Investment Income $24
0.0%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $220,666
Total Liabilities $157,137
Net Assets $63,529
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on March 6, 2020

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$40,437
Expenses
$75,519
Net Income
-$35,082
Net Assets
$40,742
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $40,416
99.9%
Investment Income $21
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $221,151
Total Liabilities $180,409
Net Assets $40,742
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on March 6, 2019

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$15,897
Expenses
$46,723
Net Income
-$30,826
Net Assets
$75,824
Notable Sources of Revenue Percent of Total Revenue
Contributions $100
0.6%
Program Services $15,777
99.2%
Investment Income $20
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $200,733
Total Liabilities $124,909
Net Assets $75,824
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Feb. 9, 2018

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$128
Expenses
$43,376
Net Income
-$43,248
Net Assets
$106,650
Notable Sources of Revenue Percent of Total Revenue
Contributions $100
78.1%
Program Services $0
Investment Income $28
21.9%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $231,559
Total Liabilities $124,909
Net Assets $106,650
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on March 29, 2017

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$1,065
Expenses
$40,652
Net Income
-$39,587
Net Assets
$149,898
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,038
97.5%
Program Services $0
Investment Income $27
2.5%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $274,892
Total Liabilities $124,994
Net Assets $149,898
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Jan. 29, 2016

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$324
Expenses
$30,785
Net Income
-$30,461
Net Assets
$189,485
Notable Sources of Revenue Percent of Total Revenue
Contributions $300
92.6%
Program Services $0
Investment Income $24
7.4%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $323,076
Total Liabilities $133,591
Net Assets $189,485
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on Feb. 26, 2015

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$23
Expenses
$30,393
Net Income
-$30,370
Net Assets
$219,946
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $0
Investment Income $23
100%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $219,946
Total Liabilities $0
Net Assets $219,946
Compensation
Key Employees and Officers Compensation Other
Ensor Transfeldt Md (President /T) $0 $0
Amir Mehbod Md (Vice Preside) $0 $0
Roberta Dressen Vp (Director) $0 $0
Kent Larson (Director) $0 $0
Ken Heitoff Md (Director) $0 $0
+ View more people

Document Links

990-EZ
Filed on April 3, 2014

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$28
Expenses
$130,906
Net Income
-$130,878
Net Assets
$250,316
Notable Sources of Revenue Percent of Total Revenue
Contributions $0
Program Services $0
Investment Income $28
100%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $250,316
Total Liabilities $0
Net Assets $250,316

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$21,359
Expenses
$33,105
Net Income
-$11,746
Net Assets
$381,194
Notable Sources of Revenue Percent of Total Revenue
Contributions $223
1.0%
Program Services $21,100
98.8%
Investment Income $36
0.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $381,194
Total Liabilities $0
Net Assets $381,194

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2010

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2009

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2008

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2007

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2006

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2005

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2004

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

API

The data powering this website is available programmatically, via an API. Read the API documentation »

See an issue with the data?

Contact Us

About Nonprofit Explorer

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

Updated