Active NPI
Steven M Riddle, RPH
- Pharmacotherapy Pharmacist
- Seattle, WA
National Provider Identifier
1730176058
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pharmacotherapy Pharmacist
- License
- PH00011826
- Practice address
- 325 9TH Ave
HMC Pharmacy Mailstop 359912
Seattle, WA 98104-2420 - Phone
- (206) 731-3000
- NPI assigned
- Oct 3, 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pharmacotherapy Pharmacist | 1835P1200X | PH00011826 | WA | Primary |
Addresses
Primary practice location
325 9TH Ave
HMC Pharmacy Mailstop 359912
Seattle, WA 98104-2420
Mailing address
6309 41St Ave SW
Seattle, WA 98136-1811
Phone (206) 409-0290
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
- Registered Pharmacist
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| PH00011826 | WA | MD | Pharmacotherapy Pharmacist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1128297600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1730176058",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "6309 41ST AVE SW",
"city": "SEATTLE",
"state": "WA",
"postal_code": "981361811",
"telephone_number": "206-409-0290"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "325 9TH AVE",
"address_2": "HMC PHARMACY MAILSTOP 359912",
"city": "SEATTLE",
"state": "WA",
"postal_code": "981042420",
"telephone_number": "206-731-3000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "RIDDLE",
"first_name": "STEVEN",
"middle_name": "M",
"name_prefix": "Mr.",
"credential": "RPH",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-03",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "1835P1200X",
"taxonomy_group": "",
"desc": "Pharmacist, Pharmacotherapy",
"state": "WA",
"license": "PH00011826",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Seattle, WA
Sources for this page
- 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.