Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Cornerstone Montgomery, Inc

Organization Case Management Agency · NPI 1689376998

Cornerstone Montgomery, Inc is a Case Management Agency in Leonardtown, Maryland. Registered with an NPI since 2023.

In the registry since
2023
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

41900 Fenwick St
Leonardtown, MD 20650-3814
Phone: (301) 475-9315
Fax: (301) 475-9317
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Case Management Agency (primary) Taxonomy 251B00000X

Record details

NPI number1689376998
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Michael Ostrowski — Billing Manager · (301) 493-4200
NPI enumeratedMarch 20, 2023
Last updated in NPPESMarch 20, 2023
Certification dateMarch 20, 2023
Mailing address6040 Southport Dr, Bethesda, MD 20814-1848

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