Katelyn Elizabeth Olsoy
Counselor β’ Everett, WA
4526 Federal Ave
Everett, WA 982032132
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
4526 Federal Ave
Everett, WA 982032132
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 2 distinct additional practice-address records in Arlington, WA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Counselor: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2023
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Everett and Washington
849 active clinicians are listed under Counselor with a practice address in Everett, WA (11,352 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Everett
0% of these 849 clinicians have the CMS telehealth indicator.
0.5% of these 849 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-01-28NUCC Taxonomy Code: 101Y00000X
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.
Additional State Medicaid & Healthcare Payer Identifiers
Secondary Practice Locations
3402 173rd Pl Ne Ste 103
Arlington, WA 982238497
Phone: 3609264190
902 E Maple St
Arlington, WA 982231634
Phone: 3607081765
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Social Worker
Licensed Independent Clinical Social Worker
Nurse Practitioner - Psychiatric/Mental Health
Advanced Registered Nurse Practitioner
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 4526 FEDERAL AVE, EVERETT, WA 982032132 (Tel: 4253496200)
Counselor (license number reported to NPPES: WA CG61440144)
Registered at 4526 FEDERAL AVE, EVERETT, WA 982032132 (Tel: 4253496200)
Registered at 17310 FREESTAD RD, ARLINGTON, WA 982235496 (Tel: 3606317462)
Counselor (license number reported to NPPES: WA CAAR.CG.61440144)
NPI status registered as active in NPPES database
Registered at 17825 59TH AVE NE STE B, ARLINGTON, WA 982236453 (Tel: 3603634234)
Registered at 17825 59TH AVE NE STE B, ARLINGTON, WA 982236453 (Tel: 3603634234)
Recorded as KATELYN OLSOY
Behavior Technician (license number reported to NPPES: WA CL61440137)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
4526 Federal Ave
Everett, WA 982032132
Phone: 4253496200