Nonprofit · EIN 35-1617305
INDIANA SOCIETY OF ANESTHESIOLOGISTS INC
Tax-exempt · INDIANAPOLIS, IN 46208
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $265,294 | $264,952 | $342 | $1,095,034 | $822 | $1,094,212 |
| December 31, 2024 | 990 | $271,797 | $241,305 | $30,492 | $1,009,839 | $5,157 | $1,004,682 |
| December 31, 2023 | 990 | $309,629 | $226,738 | $82,891 | $927,054 | $0 | $927,054 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $211,993
- Investment income
- $35,817
- Net gain from sales of assets
- $3,064
- Other revenue
- $17,484
Expenses
- Grants and similar amounts paid
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $2,816
Balance sheet and other
- Total assets, start of year
- $1,009,839
- Total assets, end of year
- $1,095,034
- Total liabilities, end of year
- $822
- Net assets, end of year
- $1,094,212
- Publicly traded securities
- $1,072,610
- Net assets without donor restrictions
- $1,094,212
- Gross receipts
- $265,294
- Employees
- 0
- Volunteers
- 40
- Year formed
- 1985
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| DORIS M HARDACKER MD | PAST PRESIDE Trustee or director, Officer | – | $0 |
| JOSEPH A DAY MD | PRESIDENT Trustee or director, Officer | – | $0 |
| NATHAN S JOHNSON MD | PRESIDENT EL Trustee or director, Officer | – | $0 |
| NICHOLAS J DATZMAN MD | PAST PRESIDE Trustee or director | – | $0 |
| TANNA J BOYER MD | ASA DIRECTOR Trustee or director | – | $0 |
| JOHN M SOURS MD | ASA ALTERNAT Trustee or director | – | $0 |
| ROBERT W BRANDT MD | ASA DELEGATE Trustee or director | – | $0 |
| ALEKSANDAR GORESKI MD | ASA DELEGATE Trustee or director | – | $0 |
| LAURA M LAMBERT MD | ASA DELEGATE Trustee or director | – | $0 |
| WILLIAM L MCNIECE MD | ASA DELEGATE Trustee or director | – | $0 |
| SEUNG B SIM MD | ASA DELEGATE Trustee or director | – | $0 |
| HARRIET A HAMER MD | ASA ALTERNAT Trustee or director | – | $0 |
| OLIVER S MONTOYA MD | ASA ALTERNAT Trustee or director | – | $0 |
| ERIN N SENDELWECK-TEMPLE MD | ASA ALTERNAT Trustee or director | – | $0 |
| CORINNA J YU MD | ASA ALTERNAT Trustee or director | – | $0 |
20 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| DAVID C ADAMS MD | ISA DIRECTOR Trustee or director | – | $0 |
| SEAN M COCHRAN MD | ISA DIRECTOR Trustee or director | – | $0 |
| RYAN HARRIS | ISA DIRECTOR Trustee or director | – | $0 |
| MICHAEL S FARTHING MD | ISA DIRECTOR Trustee or director | – | $0 |
| DUANE H KUHLENSCHMIDT MD | ISA DIRECTOR Trustee or director | – | $0 |
| DAVID A NAKATA MD | ISA DIRECTOR Trustee or director | – | $0 |
| KELLIE A PARK MD | ISA DIRECTOR Trustee or director | – | $0 |
| PATRICK R O'NEIL MD | PAST PRESIDE Trustee or director | – | $0 |
| DAVID M RATZMAN MD | PAST PRESIDE Trustee or director | – | $0 |
| RAPHAEL MERCHO | ASA ALTERNAT Trustee or director | – | $0 |
| ARIELLE F RUSSELL MD | CA-2 DELEGAT Trustee or director | – | $0 |
| MONICA L TRISSLER MD | ISA DIRECTOR Trustee or director | – | $0 |
| FRANCES BACCUS | BOARD MEMBER Trustee or director | – | $0 |
| DANIEL BENSON | BOARD MEMBER Trustee or director | – | $0 |
| ALEXANDER CHOI | BOARD MEMBER Trustee or director | – | $0 |
| JONATHON MUNRO | BOARD MEMBER Trustee or director | – | $0 |
| WESLEY PORTER | BOARD MEMBER Trustee or director | – | $0 |
| GERALD COSTELLO | BOARD MEMBER Trustee or director | – | $0 |
| JENNIFER STEWART | BOARD MEMBER Trustee or director | – | $0 |
| DAVID STARK | BOARD MEMBER Trustee or director | – | $0 |
990 for the year ended December 31, 2024: 34 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| DORIS M HARDACKER MD | PAST PRESIDE Trustee or director, Officer | – | $0 |
| JOSEPH A DAY MD | PRESIDENT Trustee or director, Officer | – | $0 |
| NATHAN S JOHNSON MD | PRESIDENT EL Trustee or director, Officer | – | $0 |
| NICHOLAS J DATZMAN MD | PAST PRESIDE Trustee or director | – | $0 |
| TANNA J BOYER MD | ASA DIRECTOR Trustee or director | – | $0 |
| JOHN M SOURS MD | ASA ALTERNAT Trustee or director | – | $0 |
| ROBERT W BRANDT MD | ASA DELEGATE Trustee or director | – | $0 |
| ALEKSANDAR GORESKI MD | ASA DELEGATE Trustee or director | – | $0 |
| LAURA M LAMBERT MD | ASA DELEGATE Trustee or director | – | $0 |
| WILLIAM L MCNIECE MD | ASA DELEGATE Trustee or director | – | $0 |
| SEUNG B SIM MD | ASA DELEGATE Trustee or director | – | $0 |
| HARRIET A HAMER MD | ASA ALTERNAT Trustee or director | – | $0 |
| OLIVER S MONTOYA MD | ASA ALTERNAT Trustee or director | – | $0 |
| ERIN N SENDELWECK-TEMPLE MD | ASA ALTERNAT Trustee or director | – | $0 |
| CORINNA J YU MD | ASA ALTERNAT Trustee or director | – | $0 |
| DAVID C ADAMS MD | ISA DIRECTOR Trustee or director | – | $0 |
| SEAN M COCHRAN MD | ISA DIRECTOR Trustee or director | – | $0 |
| SRIKANTH DASARI MD | ISA DIRECTOR Trustee or director | – | $0 |
| MICHAEL S FARTHING MD | ISA DIRECTOR Trustee or director | – | $0 |
| DUANE H KUHLENSCHMIDT MD | ISA DIRECTOR Trustee or director | – | $0 |
| DAVID A NAKATA MD | ISA DIRECTOR Trustee or director | – | $0 |
| KELLIE A PARK MD | ISA DIRECTOR Trustee or director | – | $0 |
| PATRICK R O'NEIL MD | PAST PRESIDE Trustee or director | – | $0 |
| DAVID M RATZMAN MD | PAST PRESIDE Trustee or director | – | $0 |
| TAYYAB W KHAN MD | ASA ALTERNAT Trustee or director | – | $0 |
| ARIELLE F RUSSELL MD | CA-2 DELEGAT Trustee or director | – | $0 |
| MONICA L TRISSLER MD | ISA DIRECTOR Trustee or director | – | $0 |
| FRANCES BACCUS | BOARD MEMBER Trustee or director | – | $0 |
| DANIEL BENSON | BOARD MEMBER Trustee or director | – | $0 |
| ALEXANDER CHOI | BOARD MEMBER Trustee or director | – | $0 |
| LEILANI MULLIS | BOARD MEMBER Trustee or director | – | $0 |
| WESLEY PORTER | BOARD MEMBER Trustee or director | – | $0 |
| GERALD COSTELLO | BOARD MEMBER Trustee or director | – | $0 |
| JENNIFER STEWART | BOARD MEMBER Trustee or director | – | $0 |
990 for the year ended December 31, 2023: 38 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| DORIS M HARDACKER MD | PRESIDENT Trustee or director, Officer | 2 | $0 |
| JOSEPH A DAY MD | PRESIDENT-EL Trustee or director, Officer | 2 | $0 |
| NATHAN S JOHNSON MD | SECRETARY/TR Trustee or director, Officer | 2 | $0 |
| NICHOLAS J DATZMAN MD | PAST PRESIDE Trustee or director | 2 | $0 |
| TANNA J BOYER MD | ASA DIRECTOR Trustee or director | 2 | $0 |
| JOHN M SOURS MD | ASA ALTERNAT Trustee or director | 2 | $0 |
| ROBERT W BRANDT MD | ASA DELEGATE Trustee or director | 2 | $0 |
| ALEKSANDAR GORESKI MD | ASA DELEGATE Trustee or director | 2 | $0 |
| LAURA M LAMBERT MD | ASA DELEGATE Trustee or director | 2 | $0 |
| WILLIAM L MCNIECE MD | ASA DELEGATE Trustee or director | 2 | $0 |
| SEUNG B SIM MD | ASA DELEGATE Trustee or director | 2 | $0 |
| HARRIET A HAMER MD | ASA ALTERNAT Trustee or director | 2 | $0 |
| OLIVER S MONTOYA MD | ASA ALTERNAT Trustee or director | 2 | $0 |
| ERIN N SENDELWECK-TEMPLE MD | ASA ALTERNAT Trustee or director | 2 | $0 |
| CORINNA J YU MD | ASA ALTERNAT Trustee or director | 2 | $0 |
| DAVID C ADAMS MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| SEAN M COCHRAN MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| SRIKANTH DASARI MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| PATRICK H EGAN MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| MICHAEL S FARTHING MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| DUANE H KUHLENSCHMIDT MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| SARAH M LOWE MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| JASON C MILLER MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| KELLY S MILLER MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| DAVID A NAKATA MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| KELLIE A PARK MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| DAVID A STARK MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| JENNIFER L STEWART DO | ISA DIRECTOR Trustee or director | 2 | $0 |
| GERARD T COSTELLO MD | ISA PAST PRE Trustee or director | 2 | $0 |
| SANDRA B KINSELLA MD | PAST PRESIDE Trustee or director | 2 | $0 |
| PATRICK R O'NEIL MD | PAST PRESIDE Trustee or director | 2 | $0 |
| DAVID M RATZMAN MD | PAST PRESIDE Trustee or director | 2 | $0 |
| WILLIAM L CLARK MD | CA-3 DELEGAT Trustee or director | 2 | $0 |
| TAYYAB W KHAN MD | ASA ALTERNAT Trustee or director | 2 | $0 |
| ARIELLE F RUSSELL MD | CA-2 DELEGAT Trustee or director | 2 | $0 |
| RAPHAEL MERCHO MD | DIRECTOR Trustee or director | 2 | $0 |
| MONICA L TRISSLER MD | ISA DIRECTOR Trustee or director | 2 | $0 |
| ALBIN VLECK MD | DIRECTOR Trustee or director | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 5255 N CAPITOL AVE, INDIANAPOLIS, IN 46208-2602
- Principal officer (990 for 2025)
- JOSEPH A DAY MD, 1417 SHELBY STREET, INDIANAPOLIS, IN 46203
- Signed the 990
- JOSEPH A DAY MD, PRESIDENT
- Phone
- (317) 607-9164
- Website
- WWW.ISAHQ.NET
- Return prepared by
- LONG & ASSOCIATES PC
Mission
MEDICAL ASSOCIATION
Program accomplishments
- DISSEMINATION OF INFORMATION TO MEMBERSExpenses $264,952 · revenue $211,993
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 35-1617305
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 1989
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $1,095,034
- Income (IRS master file)
- $265,294
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $265,294 | $264,952 | $1,095,034 | XML |
| 990 | December 2024 | $271,797 | $241,305 | $1,009,839 | XML |
| 990 | December 2023 | $309,629 | $226,738 | $927,054 | XML |
| 990 | December 2022 | $253,342 | $249,199 | $845,526 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
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 35-1617305).
Questions about INDIANA SOCIETY OF ANESTHESIOLOGISTS INC
- What is the EIN of INDIANA SOCIETY OF ANESTHESIOLOGISTS INC?
- The employer identification number (EIN) of INDIANA SOCIETY OF ANESTHESIOLOGISTS INC is 35-1617305.
- Is INDIANA SOCIETY OF ANESTHESIOLOGISTS INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1989.
- Are donations to INDIANA SOCIETY OF ANESTHESIOLOGISTS INC tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does INDIANA SOCIETY OF ANESTHESIOLOGISTS INC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of INDIANA SOCIETY OF ANESTHESIOLOGISTS INC 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 INDIANA SOCIETY OF ANESTHESIOLOGISTS INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of INDIANA SOCIETY OF ANESTHESIOLOGISTS INC?
- The 990 for the year ended December 31, 2025 names JOSEPH A DAY MD.
- Who are the officers and directors of INDIANA SOCIETY OF ANESTHESIOLOGISTS INC?
- The 990 for the year ended December 31, 2025 lists 35 people; 0 received compensation from the organization.
- How much revenue does INDIANA SOCIETY OF ANESTHESIOLOGISTS INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $265,294, expenses of $264,952 and total assets of $1,095,034 at year end.
Other nonprofits in INDIANAPOLIS
- INDIANA UNIVERSITY HEALTH INC EIN 35-1955872 · last filed 990 for 2024
- LILLY ENDOWMENT INC EIN 35-0868122 · last filed 990-PF for 2025
- LILLY CARES FOUNDATION INC EIN 35-2027985 · last filed 990-PF for 2025
- RENAISSANCE CHARITABLE FOUNDATION INC EIN 35-2129262 · last filed 990 for 2024
- COMMUNITY HEALTH NETWORK INC EIN 35-0983617 · last filed 990 for 2024
- MDWISE MEDICAID NETWORK INC EIN 47-3192307 · last filed 990 for 2025
- MDWISE INC EIN 35-1931354 · last filed 990 for 2025
- NATIONAL COLLEGIATE ATHLETIC ASSOCIATION EIN 44-0567264 · last filed 990 for 2025