Why this was flagged
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 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 (1)
DIAMOND HOSPICE SERVICES INC.
STE 140 RM 1601 · Incorporated —
Owners and managing parties of record
KARINA PETROSIAN
5% OR GREATER DIRECT OWNERSHIP INTEREST · I · 100% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
KARINA PETROSIAN
CORPORATE OFFICER · I · 100% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
KARINA PETROSIAN
CORPORATE DIRECTOR · I · 100% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
SOPHIA GRAMI
W-2 MANAGING EMPLOYEE · I · 0% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
OLEG BORISOVICH KHILKEVICH
CORPORATE DIRECTOR · I · 0% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
BERNADETTE MARIE LUCAS
W-2 MANAGING EMPLOYEE · I · 0% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
BERNADETTE MARIE LUCAS
CORPORATE DIRECTOR · I · 0% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
OLEG BORISOVICH KHILKEVICH
W-2 MANAGING EMPLOYEE · I · 0% ownership · since Apr 19, 2018
Source CMS Home Health Agency All Owners · record as of 19 Aug 2026 · pulled 18 Sept 2026 · version 2026-09-18 · f10296
SOPHIA GRAMI
CORPORATE OFFICER · I · 0% ownership · since Apr 19, 2018
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.
- 2 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
- MEDSTAR HOME HEALTH INCNPI 1902392095 · certification 753171 · 21221 S. WESTERN AVE, TORRANCE, CA
- DIAMOND HOSPICE SERVICES 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
- KARINA PETROSIAN5% OR GREATER DIRECT OWNERSHIP INTEREST · 100% share · since 2018-04-19
- KARINA PETROSIANCORPORATE OFFICER · 100% share · since 2018-04-19
- KARINA PETROSIANCORPORATE DIRECTOR · 100% share · since 2018-04-19
- SOPHIA GRAMIW-2 MANAGING EMPLOYEE · 0% share · since 2018-04-19
- OLEG BORISOVICH KHILKEVICHCORPORATE DIRECTOR · 0% share · since 2018-04-19
- BERNADETTE MARIE LUCASW-2 MANAGING EMPLOYEE · 0% share · since 2018-04-19
- BERNADETTE MARIE LUCASCORPORATE DIRECTOR · 0% share · since 2018-04-19
- OLEG BORISOVICH KHILKEVICHW-2 MANAGING EMPLOYEE · 0% share · since 2018-04-19
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 | MEDSTAR HOME HEALTH INC | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| NPI | 1902392095 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| Medicare certification number | 753171 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| CMS associate ID | 4082039243 | 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 | 21221 S. WESTERN AVE, STE 140 ROOM 1608 | CMS Home Health Agency Enrollments | Jul 27, 2026 | Sep 18, 2026 | 2026-09-18 · c6841a |
| City | TORRANCE | 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 | 905012970 | 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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