NPIMap

Organization Active NPI

Greater Baltimore Medical Center, Inc.

Doing business as GBMC Main Laboratory

  • Clinical Medical Laboratory
  • Baltimore, MD
National Provider Identifier
1538092051
Registry record updated Jun 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
Legal business name
GREATER BALTIMORE MEDICAL CENTER, INC.
Doing business as
GBMC Main Laboratory
Practice address
6701 N Charles St
Baltimore, MD 21204-6808
Phone
(443) 849-2213
NPI assigned
Jun 4, 2026
Last updated
Jun 4, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 4, 2026

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

Authorized official

Name
Peter Carl Ostasewski
Title
Evp & Cfo
Phone
(717) 531-1159

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Medical Laboratory 291U00000X NU Primary

Addresses

Primary practice location

6701 N Charles St
Baltimore, MD 21204-6808

Mailing address

6545 N Charles St Ste 102
Baltimore, MD 21204-6836

Other names 1

  • GBMC Main Laboratory Doing business as

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
21D0216885GBMC Main Laboratory6701 North Charles Street, Baltimore, MD 21204AccreditationFeb 27, 2027
21D0944683GBMC Point of Care Testing6701 North Charles Street, Baltimore, MD 21204Provider-performed microscopyApr 17, 2028

National Provider Directory

National Provider Directory
Tax ID family
GBMC Inc Cardiology80 organizations share this tax ID, including this one

Organizations with this tax ID in the same state 24

This tax ID family is large, so up to 24 of its organizations in the same state are linked here.

View all 24

NPI Registry JSON

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

{
    "created_epoch": "1780531200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1780531200000",
    "number": "1538092051",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6545 N CHARLES ST STE 102",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212046836"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6701 N CHARLES ST",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212046808",
            "telephone_number": "443-849-2213"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GREATER BALTIMORE MEDICAL CENTER, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-06-04",
        "last_updated": "2026-06-04",
        "certification_date": "2026-06-04",
        "status": "A",
        "authorized_official_last_name": "OSTASEWSKI",
        "authorized_official_first_name": "PETER",
        "authorized_official_middle_name": "CARL",
        "authorized_official_title_or_position": "EVP & CFO",
        "authorized_official_telephone_number": "717-531-1159"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "GBMC Main Laboratory",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Baltimore, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.