Roger Leonard

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

D0028791 Issued in MD

Practice address

18101 Prince Philip Dr
Olney, MD 20832-1514

Phone

(301) 774-8918

NPI assigned

Jun 12, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Adventist Healthcare, Inc.

  dba Adventist HealthCare Shady Grove Medical Center

  • General Acute Care Hospital
  • Rockville, MD
  • NPI 1568468221

  Cardiovascular Disease

  NPD (past)
• Cardiac Associates, P.C.

  • Cardiovascular Disease Physician
  • Rockville, MD
  • NPI 1255473179
  NPD (past)

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

{
    "created_epoch": "1150070400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1720020936",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18101 PRINCE PHILIP DR",
            "city": "OLNEY",
            "state": "MD",
            "postal_code": "208321514",
            "telephone_number": "301-774-8918"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18101 PRINCE PHILIP DR",
            "city": "OLNEY",
            "state": "MD",
            "postal_code": "208321514",
            "telephone_number": "301-774-8918"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEONARD",
        "first_name": "ROGER",
        "name_prefix": "Dr.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "MD",
            "license": "D0028791",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Victoria M Lee, MD
• Ilene Lees, LCSW-C
• Merate S Legesse, PA
• Marissa Danielle Leitma, LGPC
• Ellen Balkam Lent, PHD
• Stephanie Drew Lerner, LMSW
• Hubert Leveque, M.D.
• Randy Levin, M.D.
• Eric D Levine, D.D.S.
• Ranell Lewis

• Cardiovascular Disease Physician in Olney, MD
• Providers in Olney, MD by specialty
• Cardiovascular Disease 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.