Charles B Marek Jr., MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

D0013064 Issued in MD

Practice address

4021 Bay Dr
Middle River, MD 21220-4036

Phone

(410) 916-4090

NPI assigned

Oct 6, 2005

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/8042/brand/1/csg/1/fhir/r4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Charles B Marek Jr MD PA

  • Obstetrics & Gynecology Physician
  • Baltimore, MD
  • NPI 1679741821
  NPD (past) Authorized official
• Steven J Adashek MD PA

  • Specialist
  • Lutherville, MD
  • NPI 1366623720
  NPD (past)

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

{
    "created_epoch": "1128556800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783987200000",
    "number": "1285621094",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9712 BELAIR RD",
            "address_2": "SUITE 100",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212361103",
            "telephone_number": "410-256-3200",
            "fax_number": "440-529-2462"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4021 BAY DR",
            "city": "MIDDLE RIVER",
            "state": "MD",
            "postal_code": "212204036",
            "telephone_number": "410-916-4090"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAREK",
        "first_name": "CHARLES",
        "middle_name": "B",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-10-06",
        "last_updated": "2026-07-14",
        "certification_date": "2026-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "MD",
            "license": "D0013064",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD",
            "identifier": "369A",
            "state": "MD"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CHOICE",
            "identifier": "J380",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Mary Mackey, CRNA
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• Kelly Melissa Marciniak
• Tiffany Elizabeth Mark
• Paul Martins
• Maryland CVS Pharmacy LLC (CVS Pharmacy #17086)
• Maggie Matassa
• Shamia Keona McCallum

• Obstetrics & Gynecology Physician in Middle River, MD
• Providers in Middle River, MD by specialty
• Obstetrics & Gynecology Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 14, 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.