Clinic
Cornerstone Montgomery, INC.
Cornerstone Montgomery, INC. was paid $4.21M by Medicaid between Jan 2018 and Dec 2024, across 18 billing codes. Its largest line is 90834, psychotherapy session, about 45 minutes — 33% of everything it billed.
33Billing provider infoCORNERSTONE MONTGOMERY, INC.
BETHESDA, MD 20814
BETHESDA, MD 20814
33aNPI1194725739assigned 07/26/2005
28Total paid$4.21M
24GClaims68,373
24DCodes billed18
24AFirst – last monthJan 2018 – Dec 2024
Compared with peers
Next to other Mental Health Clinic/Center (Including Community Mental Health Center) providers in Maryland
Rank by total paid#72 of 553
Median peer was paid$501K
This provider vs. median8.4×
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 | |
|---|---|---|---|
| 2018 | 25,755 | $1.48M | |
| 2019 | 11,713 | $675K | |
| 2020 | 6,890 | $411K | |
| 2021 | 6,699 | $444K | |
| 2022 | 6,722 | $410K | |
| 2023 | 6,110 | $445K | |
| 2024incomplete | 4,484 | $347K |
Box 24 · Service lines
What it billed for
| Code | Service | Share | Claims | Bene. records | Paid |
|---|---|---|---|---|---|
| 90834 | Psychotherapy session, about 45 minutesPsychotherapy, 45 minutes with patient | 33% | 22,300 | 12,113 | $1.38M |
| 99214 | Doctor's office visit, returning patient (more involved)Office or other outpatient visit for the evaluation and management of an established patient, moderate complexity | 21% | 12,288 | 9,521 | $873K |
| 99215 | Doctor's office visit, returning patient (complex)Prolong outpt/office vis | 15% | 7,042 | 4,130 | $649K |
| H0032 | Mental health service plan development by non-physician | 8.1% | 3,526 | 3,508 | $342K |
| 90832 | Psychotherapy session, about 30 minutesPsychotherapy, 30 minutes with patient | 7.6% | 9,359 | 6,829 | $322K |
| 90792 | Psychiatric diagnostic evaluation with medical services | 4.9% | 1,600 | 1,542 | $206K |
| 99213 | Doctor's office visit, returning patient (routine)Office or other outpatient visit for the evaluation and management of an established patient, low complexity | 3.7% | 2,663 | 2,338 | $154K |
| 90853 | Group psychotherapy (other than of a multiple-family group) | 1.6% | 2,994 | 1,120 | $68K |
| 90837 | Psychotherapy session, about an hourPsychotherapy, 53 minutes with patient | 1.6% | 796 | 550 | $67K |
| 90791 | Psychiatric diagnostic evaluationPsychiatric diagnostic evaluation | <1% | 294 | 284 | $37K |
| 99443 | <1% | 1,432 | 1,257 | $36K | |
| 96372 | Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular | <1% | 2,796 | 2,345 | $32K |
6 more codes
| 99212 | Office or other outpatient visit for the evaluation and management of an established patient, straightforward | <1% | 683 | $27K |
| 90833 | Psychotherapy, 30 minutes with patient when performed with an E&M service (add-on) | <1% | 412 | $15K |
| 90785 | <1% | 118 | $3K | |
| 90836 | <1% | 12 | $965.10 | |
| 99442 | <1% | 26 | $490.01 | |
| H0044 | Supported housing, per month | 0% | 32 | $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 officialOSTROWSKI, MICHAEL (BILLING SUPERVISOR)
| Provider | Location | Paid |
|---|---|---|
| Cornerstone Montgomery, INC. | Prince Frederick, MD | $1.45M |
| 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.