David Mark Sax, MPT
Mental Health Counselor · Seattle, WA
David Mark Sax, MPT is a mental health counselor with a practice address in Seattle, Washington, and NPI 1780132035, issued on Sep 15, 2016. Check the license (Washington MC61483423, 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
- David Mark Sax
- Credential
- MPT
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- License numbers
- MC61483423 WA
00005912 WA
Self-reported in NPPES; status is on the state search - Practice location
- 5470 Shilshole Ave NW, Seattle, WA 98107
- Phone
- (360) 474-7016
- Enumerated
- Sep 15, 2016
- Record last updated
- Feb 27, 2024
- Entity
- Type 1 · individual
8 nearest mental health counselor records → All 18,094 in Washington → Look up another NPI →
Also registered at 5470 Shilshole Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Mark Sax in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license MC61483423Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
David Mark Sax among 18,094 mental health counselor records in Washington
David Mark Sax, MPT 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 2016, is newer than 42% of them.
- NPI issued2016 · 42% of these records are older, 54% newer
- In a Medicare fileNo · 4% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2024 · 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).
3,142 mental health counselor records list a practice address in Seattle
They are 3,142 of the 41,956 NPPES records with a practice address in Seattle, 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 Seattle → Mental Health Counselor nationwide →
The 8 mental health counselor records with the nearest ZIP codes
- Treina Aronson, LMHCSeattle, WA 981071275792285
- Rozalyn Boyd, LMHCSeattle, WA 981071730306366
- Robert Deeble, MA, LMHCSeattle, WA 981071861541765
- Tom Eggert, M.A., LMHCSeattle, WA 981071275692535
- Lynn Gilman, MASeattle, WA 981071578624904
- Ronald Greeley, MA, LMHCSeattle, WA 981071902926009
- Jennifer JahahnSeattle, WA 981071457517468
- Taylor McCarrey, MA, LMHC, MHPSeattle, WA 981071245400308
Common questions
What is David Mark Sax, MPT's NPI number?
David Mark Sax, MPT's National Provider Identifier (NPI) is 1780132035, issued on Sep 15, 2016. An NPI identifies a provider in billing; it is not a license.
Where is David Mark Sax, MPT located?
The NPPES record lists a practice address at 5470 Shilshole Ave NW, Seattle, WA, 98107. Phone: (360) 474-7016. Providers update this record themselves, so call before visiting.
How can I verify David Mark Sax, MPT's license?
NPPES lists Washington license number MC61483423, 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.