Why this was flagged
Many providers in separate suites of one building
This building hosts providers registered across 3 different suite or unit numbers, a pattern seen when shell agencies are set up side by side.
Source CMS Home Health Agency Enrollments · record as of 27 Jul 2026 · pulled 18 Sept 2026 · version 2026-09-18 · c6841a
3 providers share this street address
This address is the registered location of 3 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 Home Health Agency Enrollments · record as of 27 Jul 2026 · pulled 18 Sept 2026 · version 2026-09-18 · c6841a
Other providers at this street address (2)
Owners and managing parties of record
JANNA PONOMARENKO
W-2 MANAGING EMPLOYEE · I · 100% ownership · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
JANNA PONOMARENKO
5% OR GREATER DIRECT OWNERSHIP INTEREST · I · 70% ownership · since Apr 10, 2015
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
JANNA PONOMARENKO
CORPORATE OFFICER · I · 70% ownership · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
JANNA PONOMARENKO
CORPORATE DIRECTOR · I · 70% ownership · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
JANNA PONOMARENKO
OPERATIONAL/MANAGERIAL CONTROL · I · 70% ownership · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
OLEG PONOMARENKO
5% OR GREATER DIRECT OWNERSHIP INTEREST · I · 30% ownership · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
OLEG PONOMARENKO
CORPORATE DIRECTOR · I · since Oct 9, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
OLEG PONOMARENKO
W-2 MANAGING EMPLOYEE · I · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
GALINA MAKOVOZ
CORPORATE DIRECTOR · I · since Oct 9, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
GALINA MAKOVOZ
W-2 MANAGING EMPLOYEE · I · since Apr 10, 2003
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
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.
- Many providers in separate suites of one building
- 3 providers share this street address
Weekly refreshes
- 18 Sept 2026 (in use)11,494 records11,494 added · 0 changed · 0 removedpublisher data as of 27 Jul 2026
- 18 Sept 20261,000 records1,000 added · 0 changed · 0 removedpublisher data as of 27 Jul 2026(running)
Records read from this file
- GUARDIAN ANGEL HOME HEALTH AGENCY, INC.NPI 1154381267 · certification 058299 · 980 ENCHANTED WAY, SIMI VALLEY, CA
- CORNERSTONE HEALTHCARE SOLUTIONS INCsame street address in the same file
- HOSPICE AND HOME CARE INCsame street address in the same file
CMS Home Health Agency All Owners
Weekly refreshes
- 18 Sept 2026 (in use)101,188 recordspublisher data as of 19 Aug 2026
Records read from this file
- JANNA PONOMARENKOW-2 MANAGING EMPLOYEE · 100% share · since 2003-04-10
- JANNA PONOMARENKO5% OR GREATER DIRECT OWNERSHIP INTEREST · 70% share · since 2015-04-10
- JANNA PONOMARENKOCORPORATE OFFICER · 70% share · since 2003-04-10
- JANNA PONOMARENKOCORPORATE DIRECTOR · 70% share · since 2003-04-10
- JANNA PONOMARENKOOPERATIONAL/MANAGERIAL CONTROL · 70% share · since 2003-04-10
- OLEG PONOMARENKO5% OR GREATER DIRECT OWNERSHIP INTEREST · 30% share · since 2003-04-10
- OLEG PONOMARENKOCORPORATE DIRECTOR · since 2003-10-09
- OLEG PONOMARENKOW-2 MANAGING EMPLOYEE · since 2003-04-10
cms_home_health_payments
No completed weekly pull is recorded for this file yet.
Records read from this file
- Guardian Angel Home Health Agency Inc — 2024$1,559,871 paid · 152 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 | GUARDIAN ANGEL HOME HEALTH AGENCY, INC. | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| NPI | 1154381267 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Medicare certification number | 058299 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| CMS associate ID | 2769393271 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Provider type | PART A PROVIDER - HOME HEALTH AGENCY | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Organisation type | CORPORATION | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Incorporation date | 2003-04-10 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| State of incorporation | CA | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Street address | 980 ENCHANTED WAY, STE 206 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| City | SIMI VALLEY | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| State | CA | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| ZIP | 930650913 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
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.
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