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PeerBasis
Compensation Comparability Determination

Ascension Michigan

Executive Director / CEO

EIN 382631907
MO · NTEE P750
FY ending 2023-06-30
June 9, 2026

This analysis benchmarks the total compensation of Michael Wiemann Md, Executive Director / CEO ($826,009) against every comparable organization that fit the selection criteria — 84 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 93rd percentile of comparable organizationsabove the 90th percentile — board review recommended

Benchmarked executive: Michael Wiemann Md — reported title “PRESIDENT, ASCENSION MEDICAL GROUP”, a direct title match to the Executive Director / CEO role.

How comparable organizations were selected

84 organizations qualified on sector, size, and geography 84 within the band form the benchmarked peer set.

Distribution of comparable compensation

$5,387 total compensation of comparable organizations → $1,944,818 $826,009
$95,33810th
$217,94325th
$354,624Median
$513,26275th
$731,28090th
$826,009This org · 93rd
p10$95,338
p25$217,943
p50$354,624
p75$513,262
p90$731,280
$826,009

Comparable organizations

Each figure is Form 990 Part VII columns D + F (reportable pay plus other compensation and benefits; column F may include amounts from related organizations), normalized to MO cost of living (BEA RPP, 2023) and to its filing year (CPI-U); the reported amount is on each linked 990.

OrganizationStateRevenueMatched titleComp
(reported)
Comp
(adjusted)
FY
Heritage Christian Services Inc NY$147,905,086 President / Ceo $495,851 $423,040 2023
Center For Elders' Independence Inc CA$148,873,209 President/ceo $536,001 $424,451 2024
Scott & White Care Plans TX$147,425,574 President/ceo $432,719 $408,679 2023
Riderwood Village Inc MD$146,205,535 Executive Director $265,328 $227,484 2024
Chapters Health System Inc FL$145,461,525 President/ceo/vice Chair $2,257,453 $1,944,818 2024
🔒 79 more comparable organizations — included in the purchased report

Comp (reported) is the figure on each organization's Form 990 (columns D + F); Comp (adjusted) normalizes it to MO cost of living and 2023 dollars. Click any organization to verify the figure on ProPublica.

Methodology

Comparable organizations were drawn from electronically filed IRS Form 990 returns and matched on sector (NTEE code), budget (a size-adaptive revenue band that tightens as the organization grows), and geography (same-state first, broadening only when too few peers qualify); every organization within the band forms the peer set. To compare fairly across regions and years, peer compensation is normalized to MO cost of living (BEA Regional Price Parities, 2023) and to the subject's filing year (CPI-U). The figure benchmarked is Form 990 Part VII, Section A, columns D + F — reportable pay plus other compensation, benefits, and deferred amounts (column F may include amounts from related organizations) — with the chief executive matched by role. Related-organization amounts (column E) and institutional trustees are excluded. Full methodology: peerbasis.org/methodology.

Sample, role match & sensitivity

Sensitivity — the subject's percentile under alternative compensation definitions:

BasisSubject percentile
Total compensation (D + F), cost-of-living + inflation adjusted — the PeerBasis default93rd
Total compensation (D + F), as reported (no adjustments)88th
Reportable pay only (column D), adjusted93rd
All sources (D + E + F), adjusted90th

If the percentile moves materially across these definitions, the result is sensitive to methodology choices, and the board should weigh which basis best fits its facts.

Rebuttable presumption of reasonableness · 26 CFR 53.4958-6

Compensation paid by a tax-exempt organization is presumed reasonable — shifting the burden to the IRS — when three requirements are met. This report supplies the comparability data for the second. The board should record the following in its minutes concurrently with its decision:

Ready-to-adopt board minutes — executive compensation

🔒 The complete minutes language — three numbered resolutions pre-filled with this organization, the 84-organization comparison, the date, and the percentile finding, ready to paste into your minutes — is included in the purchased report.

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Sources: IRS Form 990 e-file data (apps.irs.gov); IRS Business Master File (NTEE classification). Every figure traces to an original public filing — click any organization above to verify it on ProPublica. PeerBasis is a service of Prismind Analytics; its methodology is published, was commissioned for independent adversarial review, and discloses its own limitations. This report is comparability data to support a board's good-faith determination under IRC 4958; it is not legal or tax advice. Generated by PeerBasis on June 9, 2026.