Nancy Lou Twitchel, APRN,BC,FNP, MSN

Primary specialty

Registered NurseTaxonomy code 163W00000X

License

RN66806 Issued in DC

Practice address

1441 L St. NW
Washington, DC 20230-0001

Phone

(202) 606-9911

NPI assigned

Jun 6, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Master of Science - Nursing

State licenses

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

{
    "created_epoch": "1149552000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1740229640",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "800 E ROANOKE RD",
            "city": "STERLING",
            "state": "VA",
            "postal_code": "201643318",
            "telephone_number": "703-464-8596"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1441 L ST. NW",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "202300001",
            "telephone_number": "202-606-9911"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TWITCHEL",
        "first_name": "NANCY",
        "middle_name": "LOU",
        "name_prefix": "Ms.",
        "credential": "APRN,BC,FNP, MSN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-06",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "DC",
            "license": "RN66806",
            "primary": true
        },
        {
            "code": "163WM0705X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Medical-Surgical",
            "state": "VA",
            "license": "0001084328",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "VA",
            "license": "0024165921",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "DC",
            "license": "RN66806",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Yasmeen Twahir
• Elaine Lindsay Twedt, PHARMD MS BCPS
• Renee Tweneboah-Koduah, DNP, FNP-C
• Alexa Beatrice Tweten
• Nuella Twinku
• Lisa M Twitty, HHA
• Willie Twitty
• Two Rivers Public Charter School
• Bianca Twyman
• Robin Twyman

• Registered Nurse in Washington, DC
• Providers in Washington, DC by specialty
• Registered Nurse in District of Columbia

• 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.