NPPES file of Aug 9, 2026

Mark Patrick Masterson, MSW

Mental Health Counselor · Vancouver, WA

Mark Patrick Masterson, MSW is a mental health counselor with a practice address in Vancouver, Washington, and NPI 1841203395, issued on Aug 15, 2006. Check the license (Washington LW00004819, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1841203395
Name
Mark Patrick Masterson
Credential
MSW
Primary taxonomy
Mental Health Counselor 101YM0800X
License number
LW00004819 WA
Self-reported in NPPES; status is on the state search
Practice location
12607 SE Mill Plain Blvd, Vancouver, WA 98684
Phone
(360) 896-4460
Enumerated
Aug 15, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest mental health counselor records → All 18,094 in Washington → Look up another NPI →

Also registered at 12607 SE Mill Plain Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Abera Abu, PHARM DPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1003366782
  2. Zaid Al Zubaidi, PHARMACISTPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1811652225
  3. Thomas Allmon, M.D.Family Medicine Physician1255431771
  4. Mojgan AmaniSleep Medicine (Psychiatry & Neurology) Physician1144508755
  5. Angela Aponte-Reid, R.N.Registered Nurse1184984775
  6. Stephanie Arciga, PHARMDPharmacist1134208069

Verify Mark Patrick Masterson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license LW00004819    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mark Patrick Masterson among 18,094 mental health counselor records in Washington

Mark Patrick Masterson, MSW is one of 18,094 mental health counselor records with a practice address in Washington. 4% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 94% newer
  • In a Medicare fileNo · 4% of these records are
  • In the CMS Doctors and Clinicians fileNo · 7% of these records are
  • Record last updated2007 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

999 mental health counselor records list a practice address in Vancouver

They are 999 of the 10,772 NPPES records with a practice address in Vancouver, 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 18,094 in Washington → Every provider in Vancouver → Mental Health Counselor nationwide →

The 8 mental health counselor records with the nearest ZIP codes

  1. Linda AnglinVancouver, WA 986841639215353
  2. Grant Crowley, MAVancouver, WA 986841427169804
  3. Wendy Del Mar, MSWVancouver, WA 986841093810715
  4. Rhonda Elston, M.A., LMHCVancouver, WA 986841467585943
  5. Jeanne Hehlen, LHVancouver, WA 986841790823219
  6. Robert McQuillen, MSVancouver, WA 986841831385988
  7. Helen Paris, M.A.Vancouver, WA 986841598865057
  8. John Pederson, MS COUNSELINGVancouver, WA 986841992859540

Common questions

What is Mark Patrick Masterson, MSW's NPI number?

Mark Patrick Masterson, MSW's National Provider Identifier (NPI) is 1841203395, issued on Aug 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Patrick Masterson, MSW located?

The NPPES record lists a practice address at 12607 SE Mill Plain Blvd, Vancouver, WA, 98684. Phone: (360) 896-4460. Providers update this record themselves, so call before visiting.

How can I verify Mark Patrick Masterson, MSW's license?

NPPES lists Washington license number LW00004819, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.