Gareth Duane Hemminger, M.A., LMFT
Mental Health Counselor · Sumner, WA
Gareth Duane Hemminger, M.A., LMFT is a mental health counselor with a practice address in Sumner, Washington, and NPI 1689795684, issued on Apr 3, 2007. Check the license (Washington LF00000905, 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
- Gareth Duane Hemminger
- Credential
- M.A., LMFT
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- License number
- LF00000905 WA
Self-reported in NPPES; status is on the state search - Practice location
- 918 Alder Ave, Sumner, WA 98390
- Phone
- (253) 891-2662
- Enumerated
- Apr 3, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 918 Alder Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Elton, M.S., LMFTMarriage & Family Therapist1215094370
- Marla HikeStudent in an Organized Health Care Education/Training Program1902759459
- Shannon King, MA LMHCMental Health Counselor1306000328
- Jessica LibbyMarriage & Family Therapist1740673037
- Linda Walrath, CDPAddiction (Substance Use Disorder) Counselor1528318755
- Mark Walrath, LMHC, CDPMental Health Counselor1336430362
Verify Gareth Duane Hemminger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license LF00000905Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10 mental health counselor records list a practice address in Sumner
They are 10 of the 153 NPPES records with a practice address in Sumner, and 18,094 mental health counselor records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 10 in Sumner → All 18,094 in Washington → Every provider in Sumner →
Other mental health counselor records in Washington
- Jessica Aarsvold, MA, LMHCASeattle, WA1215536719
- Gracie AbanganOmak, WA1740333863
- Anthony Abastilla, LMHCASilverdale, WA1477150829
- Pinael Abate, LMHCARenton, WA1265103568
- Hiba AbbadEverett, WA1265272231
- Kelly Abbananto, BALakewood, WA1043676562
- Hannah AbbottKirkland, WA1568334498
- Harold Abbott, M.A.Seattle, WA1548463136
- Heather Abbott, LMHCASeattle, WA1861806077
- Kristyn Abbott, LMHCOlympia, WA1215328471
Common questions
What is Gareth Duane Hemminger, M.A., LMFT's NPI number?
Gareth Duane Hemminger, M.A., LMFT's National Provider Identifier (NPI) is 1689795684, issued on Apr 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gareth Duane Hemminger, M.A., LMFT located?
The NPPES record lists a practice address at 918 Alder Ave, Sumner, WA, 98390. Phone: (253) 891-2662. Providers update this record themselves, so call before visiting.
How can I verify Gareth Duane Hemminger, M.A., LMFT's license?
NPPES lists Washington license number LF00000905, 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.