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

Individual provider Mental Health Counselor · NPI 1215570593

Marta Sloan, LMHC is a Mental Health Counselor in Seattle, Washington. Qualified in 2007, 19 years ago. Practices with Therapeutic Health Services, a 10-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Washington.

Years since qualifying
19
Licensed in
WA
In the registry since
2019
What do these letters mean?
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

1818 E Mercer St Ste 101
Seattle, WA 98112-4689
Phone: (206) 658-5340
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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 LH60252773 (WA)

Record details

NPI number1215570593
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMHC
Sole proprietorYes
NPI enumeratedOctober 19, 2019
Last updated in NPPESOctober 19, 2019

Medicare enrollment

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

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Therapeutic Health Services — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Colleagues at Therapeutic Health Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Seattle