NPIMap

Organization Active NPI

Cornerstone Montgomery, Inc.

  • Community/Behavioral Health Agency
  • Charlotte Hall, MD
National Provider Identifier
1215646963
Registry record updated Aug 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Community/Behavioral Health AgencyTaxonomy code 251S00000X
Legal business name
CORNERSTONE MONTGOMERY, INC.
Practice address
29948 Three Notch Rd Ste 7
Charlotte Hall, MD 20622-9998
Phone
(240) 376-6650
Fax
(410) 535-4965
NPI assigned
Nov 22, 2022
Last updated
Aug 28, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 28, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Alexander Knoll
Title
Administrative Manager
Phone
(301) 641-8678

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Community/Behavioral Health Agency 251S00000X Primary

Addresses

Primary practice location

29948 Three Notch Rd Ste 7
Charlotte Hall, MD 20622-9998

Mailing address

2 Taft CT Ste 200
Rockville, MD 20850-1390
Phone (301) 715-3673

National Provider Directory

National Provider Directory
Tax ID family
Cornerstone Montgomery Inc41 organizations share this tax ID, including this one

Other organizations with this tax ID 40

Organizations that report the same tax identification number in the National Provider Directory.

View all 40

Locations

8305 Old Leonardtown Rd
Hughesville, MD 20637
Phone (240) 376-6650

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1669075200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787875200000",
    "number": "1215646963",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2 TAFT CT STE 200",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208501390",
            "telephone_number": "301-715-3673",
            "fax_number": "888-496-8354"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "29948 THREE NOTCH RD STE 7",
            "city": "CHARLOTTE HALL",
            "state": "MD",
            "postal_code": "206229998",
            "telephone_number": "240-376-6650",
            "fax_number": "410-535-4965"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "CORNERSTONE MONTGOMERY, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2022-11-22",
        "last_updated": "2026-08-28",
        "certification_date": "2026-08-28",
        "status": "A",
        "authorized_official_last_name": "KNOLL",
        "authorized_official_first_name": "ALEXANDER",
        "authorized_official_title_or_position": "ADMINISTRATIVE MANAGER",
        "authorized_official_telephone_number": "301-641-8678"
    },
    "taxonomies": [
        {
            "code": "251S00000X",
            "taxonomy_group": "",
            "desc": "Community/Behavioral Health",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Charlotte Hall, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 28, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.