Active NPI
Charles Matthew Walker, PHARMD
- Pharmacist
- Washington, DC
National Provider Identifier
1720074180
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pharmacist
- License
- 011178
- Practice address
- 490 M St SW Apt W105
Washington, DC 20024-2636 - Phone
- (202) 826-6288
- NPI assigned
- Sep 21, 2005
- 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 7
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pharmacist | 183500000X | PH100001382 | DC | |
| Pharmacist | 183500000X | 20970 | MD | |
| Pharmacist | 183500000X | 22955 | NC | |
| Pharmacist | 183500000X | RPH022566 | GA | |
| Pharmacist | 183500000X | A1-0016082 | DE | |
| Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist | 1835P0018X | 0202210401 | VA | |
| Pharmacist | 183500000X | 011178 | SC | Primary |
Addresses
Primary practice location
490 M St SW Apt W105
Washington, DC 20024-2636
Mailing address
490 M St SW Apt W105
Washington, DC 20024-2636
Phone (202) 826-6288
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
- Credentials
- Doctor of Pharmacy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| PH100001382 | DC | MD | Pharmacist |
| A1-0016082 | DE | MD | Pharmacist |
| RPH022566 | GA | MD | Pharmacist |
| 20970 | MD | MD | Pharmacist |
| 22955 | NC | MD | Pharmacist |
| 011178 | SC | MD | Pharmacist |
| 0202210401 | VA | MD | Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1127260800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1745452800000",
"number": "1720074180",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "490 M ST SW APT W105",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200242636",
"telephone_number": "202-826-6288"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "490 M ST SW APT W105",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200242636",
"telephone_number": "202-826-6288"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WALKER",
"first_name": "CHARLES",
"middle_name": "MATTHEW",
"name_prefix": "Dr.",
"credential": "PHARMD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-09-21",
"last_updated": "2025-04-24",
"certification_date": "2025-04-24",
"status": "A"
},
"taxonomies": [
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "DC",
"license": "PH100001382",
"primary": false
},
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "MD",
"license": "20970",
"primary": false
},
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "NC",
"license": "22955",
"primary": false
},
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "GA",
"license": "RPH022566",
"primary": false
},
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "DE",
"license": "A1-0016082",
"primary": false
},
{
"code": "1835P0018X",
"taxonomy_group": "",
"desc": "Pharmacist, Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist",
"state": "VA",
"license": "0202210401",
"primary": false
},
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "SC",
"license": "011178",
"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 Apr 24, 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.