Gregory Leroy Walker, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

D0025662 Issued in MD

Practice address

3333 N Calvert St Ste 585
Baltimore, MD 21218-6514

Phone

(410) 235-8858

Fax

(410) 235-8904

NPI assigned

Dec 27, 2006

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 4

Medicare fee-for-service enrollment

Enrolled in MD

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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.

• Gregory Walker MD

  • Internal Medicine Physician
  • Baltimore, MD
  • NPI 1326266594
  NPD (past) Authorized official
• Frederick Health Hospital Inc

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)

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

{
    "created_epoch": "1167177600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1637280000000",
    "number": "1366508301",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3333 N CALVERT ST STE 585",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212186514",
            "telephone_number": "410-235-8858",
            "fax_number": "410-235-8904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3333 N CALVERT ST STE 585",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212186514",
            "telephone_number": "410-235-8858",
            "fax_number": "410-235-8904"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WALKER",
        "first_name": "GREGORY",
        "middle_name": "LEROY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-12-27",
        "last_updated": "2021-11-19",
        "certification_date": "2021-11-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MD",
            "license": "D0025662",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "771001100",
            "state": "MD"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS",
            "identifier": "OW45",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "110072704",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS & BLUE CHOICE",
            "identifier": "W322",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Cantrell Levette Walker Jr.
• Crystal Walker
• Delora Walker
• Denise Vanita Walker
• Glynda Walker, MSW LCSW-C
• Imani Walker, LMSW
• India Walker
• Janis H. Walker, LCSW-C
• Jennifer Walker, CRNP
• Jennifer Walker

• Internal Medicine Physician in Baltimore, MD
• Providers in Baltimore, MD by specialty
• Internal Medicine Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 19, 2021; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.