Why this was flagged
Medicare paid this provider far more than its peers
In 2020 Medicare paid this provider $13,841,063, against a typical payment of $1,246,226 for the same kind of provider that year. High volume can be legitimate, but extreme outliers are where billing fraud shows up.
Source Medicare Skilled Nursing Payments by Provider · record as of 11 Aug 2026 · pulled 9 Nov 2026 · version 2026-11-09 · 0c26d5
View the records behind this flag →
Owner is tied to 15 providers
An owner or managing party of this provider (THOMAS E CHRISTMAN) is listed on 15 separate Medicare enrollments. Chains are legal, and most are ordinary business — this is background context, not a fraud indicator on its own.
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
View the records behind this flag →
Owners and managing parties of record
JOHN CHOWSKE
CORPORATE OFFICER · I · 100% ownership · since Mar 2, 2015
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
JOHN CHOWSKE
W-2 MANAGING EMPLOYEE · I · 100% ownership · since Mar 2, 2015
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
DENNIS J VERZI
CORPORATE OFFICER · I · 50% ownership · since Sep 1, 2011
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
DENNIS J VERZI
W-2 MANAGING EMPLOYEE · I · 50% ownership · since Sep 1, 2011
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
DENNIS J VERZI
OPERATIONAL/MANAGERIAL CONTROL · I · 50% ownership · since Sep 1, 2011
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
DOUGLAS CELIBERTI
CORPORATE DIRECTOR · I · 0% ownership · since Jan 1, 2013
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
STEPHEN PIETROWSKI
CORPORATE DIRECTOR · I · since Jan 1, 2014
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
JUSTIN MCCARTHY
CORPORATE DIRECTOR · I · since Jan 1, 2014
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
THOMAS E CHRISTMAN
CORPORATE DIRECTOR · I · since Jan 1, 2017
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
JOHN HAIGHT
CORPORATE OFFICER · I · since Sep 1, 2011
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
JOHN O'BRIEN
CORPORATE DIRECTOR · I · since Jan 1, 2014
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
PETER DAGHER
CORPORATE DIRECTOR · I · since Jan 1, 2014
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
MICHAEL C LAMBERT
CORPORATE DIRECTOR · I · since Jan 1, 2014
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
JENNIFER HOFFMAN
CORPORATE DIRECTOR · I · since Jan 1, 2013
Source CMS Skilled Nursing Facility All Owners · record as of 19 Oct 2026 · pulled 21 Oct 2026 · version 2026-10-21 · 859da0
Source timeline
Corrections and disputes
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Source records
Each value includes its published file, download date, and weekly version. Open a link to check the source record. Verify this lead yourself.
| Detail | Value | Published file | Record as of | Pulled | Version |
|---|---|---|---|---|---|
| Legal name | ST CATHERINE OF SIENA MEDICAL CENTER | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| Trading name | ST CATHERINE OF SIENA NURSING AND REHABILITATION CENTER | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| NPI | 1497741763 | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| Medicare certification number | 335821 | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| CMS associate ID | 0941267876 | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| Provider type | PART A PROVIDER - SKILLED NURSING FACILITY | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| Organisation type | CORPORATION | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| Incorporation date | 1999-11-10 | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| State of incorporation | NY | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| Street address | 52 ROUTE 25A | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| City | SMITHTOWN | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| State | NY | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
| ZIP | 11787-1346 | CMS Skilled Nursing Facility Enrollments | Oct 19, 2026 | Nov 9, 2026 | 2026-11-09 · e83b3d |
What changed
Public research history
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