Why this was flagged
5 providers share this street address
This address is the registered location of 5 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
Many providers in separate suites of one building
This building hosts providers registered across 5 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
Other providers at this street address (4)
Owners and managing parties of record
YANA ZILBERMAN
5% OR GREATER DIRECT OWNERSHIP INTEREST · I · 100% ownership · since Nov 13, 2019
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
YANA ZILBERMAN
CORPORATE OFFICER · I · 100% ownership · since Nov 13, 2019
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
YANA ZILBERMAN
CORPORATE DIRECTOR · I · 100% ownership · since Nov 13, 2019
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
YANA ZILBERMAN
W-2 MANAGING EMPLOYEE · I · 100% ownership · since Nov 13, 2019
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
ANNA ANUSHIK DERDERIAN
W-2 MANAGING EMPLOYEE · I · since Apr 15, 2026
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.
- 5 providers share this street address
- Many providers in separate suites of one building
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
- QUANTUM HOME HEALTH SERVICES INCNPI 1225499742 · certification 559219 · 520 E WILSON AVE, GLENDALE, CA
- RELIANCE HOME HEALTH CARE, INC.same street address in the same file
- LH HOME CARE SERVICE INCsame street address in the same file
- TRIBUTE HOME HEALTH CARE, INCsame street address in the same file
- EASY CARE HOSPICE, INC.same 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
- YANA ZILBERMAN5% OR GREATER DIRECT OWNERSHIP INTEREST · 100% share · since 2019-11-13
- YANA ZILBERMANCORPORATE OFFICER · 100% share · since 2019-11-13
- YANA ZILBERMANCORPORATE DIRECTOR · 100% share · since 2019-11-13
- YANA ZILBERMANW-2 MANAGING EMPLOYEE · 100% share · since 2019-11-13
- ANNA ANUSHIK DERDERIANW-2 MANAGING EMPLOYEE · since 2026-04-15
cms_home_health_payments
No completed weekly pull is recorded for this file yet.
Records read from this file
- Quantum Home Health Services Inc — 2024$1,599,821 paid · 107 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 | QUANTUM HOME HEALTH SERVICES INC | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| NPI | 1225499742 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Medicare certification number | 559219 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| CMS associate ID | 3577826981 | 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 |
| Street address | 520 E WILSON AVE, STE 215 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| City | GLENDALE | 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 | 912064374 | 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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