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
Owners and managing parties of record
CORNERSTONE HEALTHCARE INC
5% OR GREATER DIRECT OWNERSHIP INTEREST · O · 100% ownership · since Oct 1, 2015
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 Oct 1, 2019
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
DANIEL WALKER
CORPORATE DIRECTOR · I · 100% ownership · since Jun 13, 2018
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 Jun 13, 2018
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
BRENT GUERISOLI
CORPORATE OFFICER · I · 0% ownership · since Jun 13, 2018
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
LEE JOHNSON
CORPORATE OFFICER · I · 0% ownership · since Jun 13, 2018
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
MATTHEW BRIGGS
W-2 MANAGING EMPLOYEE · I · 0% ownership · since Jan 1, 2017
Source CMS Hospice All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · ed1513
MARSHA LANDVATTER
CONTRACTED MANAGING EMPLOYEE · I · since Apr 13, 2022
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 2015-10-01
- THE PENNANT GROUP INC5% OR GREATER INDIRECT OWNERSHIP INTEREST · 100% share · since 2019-10-01
- DANIEL WALKERCORPORATE DIRECTOR · 100% share · since 2018-06-13
- ELLIOT MCMILLANCORPORATE OFFICER · 0% share · since 2018-06-13
- BRENT GUERISOLICORPORATE OFFICER · 0% share · since 2018-06-13
- LEE JOHNSONCORPORATE OFFICER · 0% share · since 2018-06-13
- MATTHEW BRIGGSW-2 MANAGING EMPLOYEE · 0% share · since 2017-01-01
- MARSHA LANDVATTERCONTRACTED MANAGING EMPLOYEE · since 2022-04-13
CMS Hospice Enrollments
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
- MOHAVE HEALTHCARE INCNPI 1629452768 · certification 031636 · 3954 FRONTAGE RD, BULLHEAD CITY, AZ
cms_hospice_payments
No completed weekly pull is recorded for this file yet.
Records read from this file
- River Valley Hospice — 2024$5,227,776 paid · 474 patients
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 | MOHAVE HEALTHCARE INC | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Trading name | RIVER VALLEY HOSPICE | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| NPI | 1629452768 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Medicare certification number | 031636 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| CMS associate ID | 5799091104 | 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 | CORPORATION | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Incorporation date | 2015-06-23 | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| State of incorporation | NV | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| Street address | 3954 FRONTAGE RD, STE DEF | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| City | BULLHEAD CITY | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| State | AZ | CMS Hospice Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · 641824 |
| ZIP | 86442 | 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.