Merlene Horan, M.D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

D0100933 Issued in MD

Practice address

5454 Wisconsin Ave Ste 1265
Chevy Chase, MD 20815-6950

Phone

(202) 545-4700

Fax

(202) 223-3050

NPI assigned

Oct 25, 2005

Last updated

Sep 3, 2025By the provider in NPPES

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

Medicare fee-for-service enrollment

Enrolled in DC

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

Specialty

Family Practice

Education

University of South Florida College of Medicine, 2002

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Medstar Medical Group II LLC

  • General Practice Physician
  • Baltimore, MD
  • NPI 1184046187

  DC

  Medicare reassignment Care Compare group NPD
• Signature by Medstar Health LLC

  • Internal Medicine Physician
  • Chevy Chase, MD
  • NPI 1528865763

  DC

  Medicare reassignment NPD
• Medstar Medical Group II LLC

  • Critical Care Medicine (Internal Medicine) Physician
  • Washington, DC
  • NPI 1205562816
  NPD

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

{
    "created_epoch": "1130198400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1756857600000",
    "number": "1659361343",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5454 WISCONSIN AVE STE 1265",
            "city": "CHEVY CHASE",
            "state": "MD",
            "postal_code": "208156950",
            "telephone_number": "202-545-4700",
            "fax_number": "202-223-3050"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5454 WISCONSIN AVE STE 1265",
            "city": "CHEVY CHASE",
            "state": "MD",
            "postal_code": "208156950",
            "telephone_number": "202-545-4700",
            "fax_number": "202-223-3050"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HORAN",
        "first_name": "MERLENE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-10-25",
        "last_updated": "2025-09-03",
        "certification_date": "2025-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "MD",
            "license": "D0100933",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jeanne G. Holzgrefe, M.D.
• Charles H. Homonnay-Preyer, MAOM, L.AC.
• Mindy M Hong, PA-C
• Sung Up Hong, L.AC
• Brandon Thomas Hooker
• Kimberly Marie Horning, NP-C
• Catherine Horvath, C.R.N.A.
• Erick Armando Hosaka, D.D.S.
• Hedy Anita Howard, M.D.
• Waritta Howell, PA-C

• Family Medicine Physician in Chevy Chase, MD
• Providers in Chevy Chase, MD by specialty
• Family Medicine Physician in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 2025; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.