Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. Dennis William McCarthy, MA, LMHC

Individual provider Mental Health Counselor · NPI 1215147145

Mr. Dennis William McCarthy, MA, LMHC is a Mental Health Counselor in Seattle, Washington. Qualified in 2006, 20 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
20
Licensed in
WA
In the registry since
2007
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.

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Practice location Address checks out

1904 3rd Ave Ste 915
Seattle, WA 98101-1126
Phone: (206) 595-2659
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence LH60086698 (WA)

Record details

NPI number1215147145
Entity typeIndividual (Type 1)
GenderMale
Credentials MA , LMHC
Sole proprietorYes
NPI enumeratedMay 22, 2007
Last updated in NPPESDecember 26, 2025
Certification dateDecember 26, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2006 (20 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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