NPIMap

Organization Active NPI

Greater Baltimore Medical Center, Inc.

Doing business as GBMC Gastroenterology at JHH Greenspring SurgCenter

  • Gastroenterology Physician
  • Lutherville, MD
National Provider Identifier
1275355240
Registry record updated Jul 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
Legal business name
GREATER BALTIMORE MEDICAL CENTER, INC.
Doing business as
GBMC Gastroenterology at JHH Greenspring SurgCenter
Practice address
10803 Falls Rd Pavilion III
Ste 3100
Lutherville, MD 21093-4582
Phone
(410) 616-7650
NPI assigned
Oct 30, 2024
Last updated
Jul 24, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jul 24, 2026

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

Authorized official

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207RG0100X Primary

Addresses

Primary practice location

10803 Falls Rd Pavilion III
Ste 3100
Lutherville, MD 21093-4582

Mailing address

6701 N Charles St
Baltimore, MD 21204-6808

Other names 1

  • GBMC Gastroenterology at JHH Greenspring SurgCenter Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040217000852 MD Part B Supplier - Clinic/Group Practice 1759276975 Receives reassigned benefits from 513 practitioners
This NPI is an additional NPI on the enrollment

National Provider Directory

National Provider Directory
Tax ID family
Greater Baltimore Medical Center80 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": "1730246400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1784851200000",
    "number": "1275355240",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6701 N CHARLES ST",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212046808"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10803 FALLS RD PAVILION III",
            "address_2": "STE 3100",
            "city": "LUTHERVILLE",
            "state": "MD",
            "postal_code": "210934582",
            "telephone_number": "410-616-7650"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GREATER BALTIMORE MEDICAL CENTER, INC.",
        "organizational_subpart": "NO",
        "enumeration_date": "2024-10-30",
        "last_updated": "2026-07-24",
        "certification_date": "2026-07-24",
        "status": "A",
        "authorized_official_last_name": "OSTASEWSKI",
        "authorized_official_first_name": "PETER",
        "authorized_official_middle_name": "CARL",
        "authorized_official_title_or_position": "CFO",
        "authorized_official_telephone_number": "717-531-1159"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Gastroenterology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "GBMC Gastroenterology at JHH Greenspring SurgCenter",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Lutherville, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.