Elizabeth Averill Riddell, M.A. CCC-SLP
Speech-Language Pathologist · Seattle, WA
Elizabeth Averill Riddell, M.A. CCC-SLP is a speech-language pathologist with a practice address in Seattle, Washington, and NPI 1710142211, issued on Jul 23, 2008. Check the license (Washington LL00002789, as entered in NPPES) with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Elizabeth Averill Riddell
- Credential
- M.A. CCC-SLP
- Primary taxonomy
- Speech-Language Pathologist 235Z00000X
- License number
- LL00002789 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1633 E Lynn St, Seattle, WA 98112
- Phone
- (206) 706-2727
- Enumerated
- Jul 23, 2008
- Record last updated
- Jul 23, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Elizabeth Averill Riddell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license LL00002789Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
534 speech-language pathologist records list a practice address in Seattle
They are 534 of the 41,956 NPPES records with a practice address in Seattle, and 4,109 speech-language pathologist records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 534 in Seattle → All 4,109 in Washington → Every provider in Seattle →
Other speech-language pathologist records in Washington
- Melissa Aar, MS, MS, CF-SLPEverett, WA1699336735
- Elizabeth Aarstol, M.A. CCC-SLPBellingham, WA1750876827
- Jessica Abawag, CCC-SLPUniversity Place, WA1225392392
- Elise Abel, M.A., CF-SLPSpokane, WA1295349835
- Megan AbergerIssaquah, WA1679074512
- Deanna AberleSeattle, WA1932400652
- Tracy Abeto, M.S., CCC-SLPSeattle, WA1134561467
- Hannah AbrahamTacoma, WA1467223545
- Kierra Abraham, M.S., CCC-SLPBellevue, WA1346928835
- Stephanie Abutin, ,MS, CCC-SLPSeattle, WA1902522444
Common questions
What is Elizabeth Averill Riddell, M.A. CCC-SLP's NPI number?
Elizabeth Averill Riddell, M.A. CCC-SLP's National Provider Identifier (NPI) is 1710142211, issued on Jul 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Averill Riddell, M.A. CCC-SLP located?
The NPPES record lists a practice address at 1633 E Lynn St, Seattle, WA, 98112. Phone: (206) 706-2727. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Averill Riddell, M.A. CCC-SLP's license?
NPPES lists Washington license number LL00002789, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.