Active NPI
Joshua Knappenberger, CCC-SLP
- Speech-Language Pathologist
- Washington, DC
National Provider Identifier
1063392876
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Speech-Language Pathologist
- License
- SLP200001766
- Practice address
- 801 Buchanan St NE
Washington, DC 20017-3924 - Phone
- (202) 529-7600
- NPI assigned
- Sep 3, 2025
- Sex
- Male
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Speech-Language Pathologist | 235Z00000X | SLP200001766 | DC | Primary |
Addresses
Primary practice location
801 Buchanan St NE
Washington, DC 20017-3924
Mailing address
1401 Pennsylvania Ave SE Apt 408
Washington, DC 20003-0228
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 |
|---|---|---|---|
| SLP200001766 | DC | MD | Speech-Language Pathologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1756857600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1756857600000",
"number": "1063392876",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1401 PENNSYLVANIA AVE SE APT 408",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200030228"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "801 BUCHANAN ST NE",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200173924",
"telephone_number": "202-529-7600"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KNAPPENBERGER",
"first_name": "JOSHUA",
"credential": "CCC-SLP",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2025-09-03",
"last_updated": "2025-09-03",
"certification_date": "2025-09-03",
"status": "A"
},
"taxonomies": [
{
"code": "235Z00000X",
"taxonomy_group": "",
"desc": "Speech-Language Pathologist",
"state": "DC",
"license": "SLP200001766",
"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 3, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.