Reviewed 2026-06-22

ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

Ownership, control, relationships, and source records for ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE.

Ownership receipt

What we can say clearly

ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE appears in the source tracker as a venture-backed investment signal. This dossier does not classify that signal as completed private-equity ownership.

Finding: Documented investment signal
Last reviewed: 2026-06-22
Evidence: 6 cited sources

Documented warningPossible ownership change under review

ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE appears in the source tracker as a venture-backed investment signal. This dossier does not classify that signal as completed private-equity ownership.

Documented investment signal
Last verified Jun 2026

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Key sources

CMS owners

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Control Map

This leads to this

reported ownership or operating chain

ASCENSION HEALTHASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

governs

JOSEPH REGANASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

governs

MATTHEW MOKROHISKYASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

Evidence limits

Red color requiredCCN exact match2 ownership sources checked6 total sources below

Review Note

Why this page is published

government-corroborated

Meets the Phase 3 publication standard for its displayed status

Ownership & Control

Detailed records, kept below the answer

Sponsor, operator, CMS legal-owner/control records, and facility are shown as separate evidence layers.

See the full ownership chain

reported ownership or operating chainASCENSION HEALTH → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

The platform attribution comes from the research tracker and is displayed separately from CMS legal-owner rows.

governsJOSEPH REGAN → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE DIRECTOR · associated 07/01/2023

governsMATTHEW MOKROHISKY → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE DIRECTOR · associated 01/01/2024

governsROBERT VANHIMBERGEN → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE DIRECTOR · associated 07/01/2017

governsMARK CATHERALL → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE DIRECTOR · associated 01/01/2024

governsDANIEL JACKSON → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE OFFICER · associated 04/01/2023

is associated withDANIEL JACKSON → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

W-2 MANAGING EMPLOYEE · associated 04/01/2023

controls or managesDANIEL JACKSON → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

OPERATIONAL/MANAGERIAL CONTROL · associated 04/01/2023

is associated withROBIN BARTEN → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

W-2 MANAGING EMPLOYEE · associated 11/01/2024

governsBHAGATH SIRIPURAPU → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE DIRECTOR · associated 01/01/2024

governsJONATHAN BERKOFF → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE DIRECTOR · associated 07/01/2023

governsMICHAEL MCCULLOUGH → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

CORPORATE OFFICER · associated 10/21/2024

is associated withMICHAEL MCCULLOUGH → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

W-2 MANAGING EMPLOYEE · associated 10/21/2024

controls or managesMICHAEL MCCULLOUGH → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

OPERATIONAL/MANAGERIAL CONTROL · associated 10/21/2024

is associated withSTEPHANIE HIETPAS → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

W-2 MANAGING EMPLOYEE · associated 11/01/2024

is associated withANDRE STOREY → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

W-2 MANAGING EMPLOYEE · associated 12/11/2023

controls or managesANDRE STOREY → ASCENSION COLUMBIA ST MARY'S HOSPITAL MILWAUKEE

OPERATIONAL/MANAGERIAL CONTROL · associated 12/11/2023

CMS owner rows establish enrolled legal ownership or control roles; they do not always name the ultimate financial sponsor.

Timeline

Ownership history and events

Current / undated
venture backing
Ascension is reported as an investment backer; this is not treated as a completed ownership claim.

Metrics

Financial and utilization series

Metric	Period	Value	Method note
net patient revenue	07/01/2023 to 06/30/2024	$520,774,894	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
net patient revenue	07/01/2022 to 06/30/2023	$524,421,402	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
net patient revenue	07/01/2021 to 06/30/2022	$520,244,299	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
operating expense	07/01/2023 to 06/30/2024	$627,896,332	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
operating expense	07/01/2022 to 06/30/2023	$588,943,467	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
operating expense	07/01/2021 to 06/30/2022	$656,263,793	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
net income	07/01/2023 to 06/30/2024	-$70,795,064	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
net income	07/01/2022 to 06/30/2023	-$205,377,055	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
net income	07/01/2021 to 06/30/2022	-$101,296,884	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
total assets	07/01/2023 to 06/30/2024	$389,579,163	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
total assets	07/01/2022 to 06/30/2023	$424,264,229	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
total assets	07/01/2021 to 06/30/2022	$784,528,205	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
total liabilities	07/01/2023 to 06/30/2024	$155,517,652	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
total liabilities	07/01/2022 to 06/30/2023	$133,727,985	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
total liabilities	07/01/2021 to 06/30/2022	$232,157,562	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
contract labor direct patient care	07/01/2023 to 06/30/2024	$35,372,220	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
contract labor direct patient care	07/01/2022 to 06/30/2023	$16,876,712	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
contract labor direct patient care	07/01/2021 to 06/30/2022	$16,127,285	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
fte employees	07/01/2023 to 06/30/2024	1,592.8 FTE	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
fte employees	07/01/2022 to 06/30/2023	1,481.45 FTE	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
fte employees	07/01/2021 to 06/30/2022	2,259.55 FTE	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
beds	07/01/2023 to 06/30/2024	374 beds	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
beds	07/01/2022 to 06/30/2023	382 beds	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
beds	07/01/2021 to 06/30/2022	378 beds	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
patient days	07/01/2023 to 06/30/2024	84,965 days	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
patient days	07/01/2022 to 06/30/2023	78,621 days	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
patient days	07/01/2021 to 06/30/2022	77,348 days	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
discharges	07/01/2023 to 06/30/2024	13,950 discharges	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
discharges	07/01/2022 to 06/30/2023	12,098 discharges	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.
discharges	07/01/2021 to 06/30/2022	11,464 discharges	Hospital Provider Cost Report value. Compare only like fields and compatible fiscal periods; no causal inference is implied.

Evidence Notes

Contradictions, limitations, and unavailable fields

Open evidence notes

Limitation

The investment signal does not establish completed private-equity ownership or a pending sale.

Unavailable

Precise acquisition date

Unavailable

Official facility URL

Direct connection

Reported parent system or portfolio company: Ascension.

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Take the evidence with you

CSVEvidence CSV — every source with dates and URLsSpreadsheet-friendly source audit for this hospital JSONFull evidence file JSONComplete structured evidence file exactly as published

Sources

Evidence and source documents

governmentHospitals RAPTHomeland Infrastructure Foundation-Level Data researchPrivate Equity Hospital TrackerPrivate Equity Stakeholder Project governmentHospital EnrollmentsCenters for Medicare & Medicaid Services governmentHospital All OwnersCenters for Medicare & Medicaid Services governmentHospital Provider Cost ReportsCenters for Medicare & Medicaid Services governmentHospital General InformationCenters for Medicare & Medicaid Services