Why this was flagged
Owner is tied to 149 providers
An owner or managing party of this provider (CORNERSTONE HEALTHCARE INC) is listed on 149 separate Medicare enrollments. Chains are legal, but rapid multi-entity accumulation is a common structure in healthcare fraud cases.
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
2 providers share this street address
This address is the registered location of 2 separate Medicare-enrolled providers. Legitimate causes exist (shared medical office buildings, management companies), but dense clustering of billing entities at one address is a known fraud pattern.
Source CMS Hospice Enrollments · record as of 27 Jul 2026 · pulled 18 Sept 2026 · version 2026-09-18 · 641824
Other providers at this street address (1)
CLARK FORK HEALTHCARE LLC
STE 260 · Incorporated Jan 9, 2020
Owners and managing parties of record
CORNERSTONE HEALTHCARE INC
5% OR GREATER DIRECT OWNERSHIP INTEREST · O · 100% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
THE PENNANT GROUP INC
5% OR GREATER INDIRECT OWNERSHIP INTEREST · O · 100% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
MICHAEL MAGETTE
CORPORATE OFFICER · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
BRENT GUERISOLI
CORPORATE DIRECTOR · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
ELLIOT MCMILLAN
CORPORATE OFFICER · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
JENNIFER C GILBERT
W-2 MANAGING EMPLOYEE · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
JOHN J GOCHNOUR
CORPORATE OFFICER · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
AMBER TUELLER
CORPORATE OFFICER · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
LENA C ZAESKE
W-2 MANAGING EMPLOYEE · I · 0% ownership · since May 1, 2025
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
Source timeline
Every flag on this provider is built from one or more published government files. Below is each file that contributed, the weekly pulls we have of it, and the actual records read from it.
CMS Hospice All Owners
- Owner is tied to 149 providers
Weekly refreshes
- 18 Sept 2026 (in use)70,444 recordspublisher data as of 19 Aug 2026
Records read from this file
- CORNERSTONE HEALTHCARE INC5% OR GREATER DIRECT OWNERSHIP INTEREST · 100% share · since 2025-05-01
- THE PENNANT GROUP INC5% OR GREATER INDIRECT OWNERSHIP INTEREST · 100% share · since 2025-05-01
- MICHAEL MAGETTECORPORATE OFFICER · 0% share · since 2025-05-01
- BRENT GUERISOLICORPORATE DIRECTOR · 0% share · since 2025-05-01
- ELLIOT MCMILLANCORPORATE OFFICER · 0% share · since 2025-05-01
- JENNIFER C GILBERTW-2 MANAGING EMPLOYEE · 0% share · since 2025-05-01
- JOHN J GOCHNOURCORPORATE OFFICER · 0% share · since 2025-05-01
- AMBER TUELLERCORPORATE OFFICER · 0% share · since 2025-05-01
CMS Hospice Enrollments
- 2 providers share this street address
Weekly refreshes
- 18 Sept 2026 (in use)5,802 records5,000 added · 1 changed · 0 removedpublisher data as of 27 Jul 2026
Records read from this file
- CLARK FORK HEALTHCARE LLCNPI 1427844588 · certification 271543 · 205 HAGGERTY LN, BOZEMAN, MT
- CLARK FORK HEALTHCARE LLCsame street address in the same file
Where every detail came from
Each value below is traced to the published file it was read from, the day we downloaded it, and the weekly version it belongs to. Open the link to check the original record yourself.
| Detail | Value | Published file | Record as of | Pulled | Version |
|---|---|---|---|---|---|
| Legal name | CLARK FORK HEALTHCARE LLC | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Trading name | BIG SKY HOSPICE | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| NPI | 1427844588 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Medicare certification number | 271543 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| CMS associate ID | 3870923881 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Provider type | PART A PROVIDER - HOSPICE | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Organisation type | LLC | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Street address | 205 HAGGERTY LN, STE 260 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| City | BOZEMAN | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| State | MT | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| ZIP | 597158801 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
What changed
How this provider's public record has moved between weekly refreshes. See the whole week.
Nothing has changed for this provider since we started comparing weekly refreshes.
Public research history
Nobody has worked this lead yet. Notes published by investigators stay here even after a claim expires.
Readers judge whether this flag holds up. A note only reaches the top when people who usually disagree both rate it helpful.
No notes yet. If you have checked this provider, say what you found.