Individual provider Active NPI

Katumu Mariama Sei

  • Registered Nurse
  • Washington, DC
National Provider Identifier
1881474021
Registry record updated Sep 10, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Registered NurseTaxonomy code 163W00000X
License
RN968442 Issued in DC
Practice address
2918 Minnesota Ave SE
Washington, DC 20019-1127
Phone
(202) 839-5310
NPI assigned
Oct 4, 2023
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 10, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Registered Nurse 163WA0400X RN968442 DC
Registered Nurse 163W00000X RN968442 DC Primary

Addresses

Primary practice location

2918 Minnesota Ave SE
Washington, DC 20019-1127

Mailing address

9400 Grand Blvd Apt 1309
Largo, MD 20774-2646
Phone (240) 246-4243

Other practice location 1

4130 Hunt Pl NE
Washington, DC 20019-3565
Phone (202) 388-4300

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
RN968442DCMDRegistered Nurse

NPI Registry JSON

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

{
    "created_epoch": "1696377600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788998400000",
    "number": "1881474021",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9400 GRAND BLVD APT 1309",
            "city": "LARGO",
            "state": "MD",
            "postal_code": "207742646",
            "telephone_number": "240-246-4243"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2918 MINNESOTA AVE SE",
            "city": "WASHINGTON",
            "state": "DC",
            "postal_code": "200191127",
            "telephone_number": "202-839-5310"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4130 Hunt Pl NE",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200193565",
            "country_code": "US",
            "telephone_number": "202-388-4300",
            "fax_number": "202-388-4339",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SEI",
        "first_name": "KATUMU",
        "middle_name": "MARIAMA",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2023-10-04",
        "last_updated": "2026-09-10",
        "certification_date": "2026-09-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WA0400X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Addiction (Substance Use Disorder)",
            "state": "DC",
            "license": "RN968442",
            "primary": false
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "DC",
            "license": "RN968442",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Washington, DC

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 10, 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.