Kathy J Helzlsouer, MD

Primary specialty

Medical Oncology PhysicianTaxonomy code 207RX0202X

License

D0028685 Issued in MD

Practice address

227 Saint Paul PL
6TH Floor
Baltimore, MD 21202-2001

Phone

(410) 951-7950

Fax

(410) 951-7931

NPI assigned

Jun 9, 2006

Sex

Female

Sole proprietor

No

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

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.

• Frederick Health Hospital Inc

  dba Frederick Health Hospital

  • General Acute Care Hospital
  • Frederick, MD
  • NPI 1538165527
  NPD (past)
• Saint Paul Place Specialists, Inc.

  • Plastic and Reconstructive Surgery Physician
  • Baltimore, MD
  • NPI 1518913839
  NPD (past)

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

{
    "created_epoch": "1149811200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1982645875",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 64075",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212644075"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "227 SAINT PAUL PL",
            "address_2": "6TH FLOOR",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212022001",
            "telephone_number": "410-951-7950",
            "fax_number": "410-951-7931"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HELZLSOUER",
        "first_name": "KATHY",
        "middle_name": "J",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-09",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "MD",
            "license": "D0028685",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BC / BS OF MD",
            "identifier": "KT93 / 642222-01",
            "state": "MD"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUECHOICE",
            "identifier": "S186 / 0076",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Helping Our Youth Achieve Psychiatric Rehabilitation Program
• Helplink
• Melecia K Helwig-Henson, PA-C
• Madeline Helwig, MD
• Jennifer Helzer, APRN-CNS
• Ramzi Kamal Hemady, M.D.
• Alnoor G Hemani, MD,MPH
• Walter Chad Hembree, MD
• Tiffany L Hembry, LCSW-C
• Hemlock Manor LLC

• Medical Oncology Physician in Baltimore, MD
• Providers in Baltimore, MD by specialty
• Medical Oncology Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.