Mary Shannon Sumner
Counselor · Prosser, WA
Mary Shannon Sumner is a counselor with a practice address in Prosser, Washington, and NPI 1538553300, issued on Mar 19, 2015. Check the license (Washington LH60802996, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Shannon Sumner
- Primary taxonomy
- Counselor 101Y00000X
- License number
- LH60802996 WA
Self-reported in NPPES; status is on the state search - Practice location
- 820 Memorial St Ste 1, Prosser, WA 99350
- Phone
- (509) 786-2010
- Enumerated
- Mar 19, 2015
- Record last updated
- Dec 14, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (509) 788-1794
- Medicaid ID
- 1020986 AK
- Medicare enrollment
- Enrolled (PECOS I20240110003948); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest counselor records → All 11,350 in Washington → Look up another NPI →
Also registered at 820 Memorial St Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Shannon Sumner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license LH60802996Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Port Gamble S'Klallam TribeKingston, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Shannon Sumner among 11,350 counselor records in Washington
Mary Shannon Sumner is one of 11,350 counselor records with a practice address in Washington. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 17% of them.
- NPI issued2015 · 17% of these records are older, 80% newer
- In a Medicare fileYes · under 1% of these records are
- In the CMS Doctors and Clinicians fileYes · 1% of these records are
- Graduated2014 · median 2018 among the 116 with a school on file
- Record last updated2017 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101Y00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Counselor providers in Washington
There are 11,350 counselor records in Washington.
All 11,350 in Washington → Every provider in Prosser → Counselor nationwide →
The 8 counselor records with the nearest ZIP codes
- Sonia MaganaMattawa, WA 993491437867355
- Nancy Santoyo, LMHC-AMattawa, WA 993491568930964
- Crystal Alexander, BSWRichland, WA 993521780138784
- Katie Haynes, MA, LMHCARichland, WA 993521336670272
- Eliazar IslasRichland, WA 993521235311465
- Jim MasonRichland, WA 993521831460344
- Amy PalmerRichland, WA 993521841754884
- Brandie Palmer, SUDPRichland, WA 993521942762489
Common questions
What is Mary Shannon Sumner's NPI number?
Mary Shannon Sumner's National Provider Identifier (NPI) is 1538553300, issued on Mar 19, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary Shannon Sumner located?
The NPPES record lists a practice address at 820 Memorial St Ste 1, Prosser, WA, 99350. Phone: (509) 786-2010. Providers update this record themselves, so call before visiting.
How can I verify Mary Shannon Sumner's license?
NPPES lists Washington license number LH60802996, 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. Medicare files from data.cms.gov. 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.