Active NPI
Byron Flynn Matthews
- Personal Care Attendant
- Washington, DC
National Provider Identifier
1083565295
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Personal Care Attendant
- License
- 1083565295
- Practice address
- 250 56TH St NE
Washington, DC 20019-6743 - Phone
- (202) 704-5350
- NPI assigned
- Feb 4, 2026
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Personal Care Attendant | 3747P1801X | 1083565295 | DC | Primary |
Addresses
Primary practice location
250 56TH St NE
Washington, DC 20019-6743
Mailing address
1400 Congress PL SE Apt 203
Washington, DC 20020-2952
Phone (202) 878-3274
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
| License | State | Type | Specialty |
|---|---|---|---|
| 1083565295 | DC | MD | Personal Care Attendant |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1770163200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1770249600000",
"number": "1083565295",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1400 CONGRESS PL SE APT 203",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200202952",
"telephone_number": "202-878-3274"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "250 56TH ST NE",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200196743",
"telephone_number": "202-704-5350"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MATTHEWS",
"first_name": "BYRON",
"middle_name": "FLYNN",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2026-02-04",
"last_updated": "2026-02-05",
"certification_date": "2026-02-05",
"status": "A"
},
"taxonomies": [
{
"code": "3747P1801X",
"taxonomy_group": "",
"desc": "Technician, Personal Care Attendant",
"state": "DC",
"license": "1083565295",
"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 Feb 5, 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.