Cornerstone Montgomery, INC.

Cornerstone Montgomery, INC. was paid $7.57M by Medicaid between Jan 2018 and Nov 2024, across 3 billing codes. Its largest line is H0040, Assertive community treatment program, per diem — 100% of everything it billed.

33Billing provider infoCORNERSTONE MONTGOMERY, INC.
ROCKVILLE, MD 20850

33aNPI1871943381assigned 06/15/2016

33bProvider typeCommunity/Behavioral Health Agency

28Total paid$7.57M

24GClaims5,490

24DCodes billed3

24AFirst – last monthJan 2018 – Nov 2024

Compared with peers

Next to other Community/Behavioral Health Agency providers in Maryland

Rank by total paid#81 of 794

Median peer was paid$786K

This provider vs. median9.6×

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.

Single-Code Concentration100% of spending on code H0040 with only 3 total codes billed. Highly concentrated billing profile.

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
2018	554	$670K
2019	519	$635K
2020	1,034	$1.09M
2021	1,185	$1.68M
2022	1,192	$1.82M
2023	616	$980K
2024incomplete	390	$695K

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
H0040	Assertive community treatment program, per diem	100%	5,458	5,253	$7.57M
H0037	Community psychiatric supportive treatment program, per diem	0%	17	16	$0.00
S9445	Patient education, not otherwise classified, non-physician provider, individual, per session	0%	15	15	$0.00

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 officialZECHA, GWENDOLYN (CFO)

Parent organizationCORNERSTONE MONTGOMERY, INC.

Same official

Other billing entities under ZECHA, GWENDOLYN

Full network →

Provider	Location	Paid
Cornerstone Montgomery, INC.	Silver Spring, MD	$29.48M
Cornerstone Montgomery, INC.	Rockville, MD	$11.60M
Cornerstone Montgomery, INC.	Silver Spring, MD	$3.07M
Cornerstone Montgomery, INC.	Rockville, MD	$2.52M
Cornerstone Montgomery, INC.	Rockville, MD	$430K
Cornerstone Montgomery, INC.	Silver Spring, MD	$157K
Cornerstone Montgomery, INC.	Bethesda, MD	$105K

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