Cornerstone Montgomery, INC.

Cornerstone Montgomery, INC. was paid $1.45M by Medicaid between May 2023 and Oct 2024, across 2 billing codes. Its largest line is H0044, Supported housing, per month — 68% of everything it billed.

33Billing provider infoCORNERSTONE MONTGOMERY, INC.
PRINCE FREDERICK, MD 20678

33aNPI1699484394assigned 11/21/2022

33bProvider typeCommunity/Behavioral Health Agency

28Total paid$1.45M

24GClaims1,152

24DCodes billed2

24AFirst – last monthMay 2023 – Oct 2024

Compared with peers

Next to other Community/Behavioral Health Agency providers in Maryland

Rank by total paid#303 of 794

Median peer was paid$786K

This provider vs. median1.8×

Peers share this provider's primary NPPES type and state. Size alone says nothing about billing quality: a big agency or a hospital system is expected to sit far above the median.

Auditor's notes

Automated statistical signals. Not evidence of fraud — how these are computed.

Entity ProliferationAuthorized official OSTROWSKI, MICHAEL controls 11+ related entities in our dataset. Read more

Box 24A · Dates of service

Paid by month

Paid that monthNov–Dec 2024: claims still arriving when the file was cut, so these months run low for every provider

By year, as a table

Year	Claims	Paid
2023	396	$443K
2024incomplete	756	$1.00M

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
H0044	Supported housing, per month	68%	1,008	1,005	$985K
H2016	Community support for mental illness or disability, billed per dayComprehensive community support services, per diem	32%	144	144	$462K

Claims and beneficiary counts add up across code × month rows, so one patient seen every month counts many times. Rows with fewer than 12 claims are suppressed by HHS, so small lines can be missing.

From NPPES

Who's on the registration

Authorized officialOSTROWSKI, MICHAEL (BILLING MANAGER)

Parent organizationCORNERSTONE MONTGOMERY, INC.

Same official

Other billing entities under OSTROWSKI, MICHAEL

Full network →

Provider	Location	Paid
Cornerstone Montgomery, INC.	Bethesda, MD	$4.21M
Cornerstone Montgomery, INC.	Bethesda, MD	$1.36M
Cornerstone Montgomery, INC.	Leonardtown, MD	$573K
Cornerstone Montgomery, INC.	Prince Frederick, MD	$568K
Cornerstone Montgomery, INC.	Leonardtown, MD	$479K
Cornerstone Montgomery, INC.	Waldorf, MD	$465K
Cornerstone Montgomery, INC.	Hughesville, MD	$386K
Cornerstone Montgomery, INC.	Waldorf, MD	$376K
Cornerstone Montgomery, INC.	Rockville, MD	$244.70
Cornerstone Montgomery, INC.	Silver Spring, MD	$0.00
Cornerstone Montgomery, INC.	Bethesda, MD	$0.00

Matched on the authorized-official name exactly as entered in NPPES. A common name can match unrelated people.