1. Home
  2. Directory
  3. Washington
  4. Seattle
  5. Counselor
  6. NPI Profile

MATTHEW B ELLEFSON SUDP
NPI 1609574144
Counselor - Addiction (Substance Use Disorder) in Seattle, WA

Active since February 22, 2023
1618 S LANE ST, SEATTLE, WA 98144(206) 550-5894 Get Directions Write a Review

NPPES record last updated: February 22, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Matthew B Ellefson Sudp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MATTHEW B ELLEFSON SUDP (NPI 1609574144) is an individual addiction (substance use disorder) provider in Seattle, Washington and active in the NPI registry since February 2023.

NPPES Registry Identity

NPI1609574144
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMATTHEW B ELLEFSONCredential: SUDP
Location Address1618 S LANE STSeattle, WA 98144-2829
Mailing Address1618 S Lane StSeattle, WA 98144-2829 · (206) 550-5894
Phone(206) 550-5894
Sole ProprietorNo
Enumeration DateFebruary 22, 2023
NPPES CertifiedFebruary 22, 2023
✔ NPI 1609574144 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
1618 S LANE ST, Seattle, WA 98144
Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. BENJAMIN CHASE VAAGEN
Peer Specialist
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 464-1570
KATHERINE LORRAINE CRUTSINGER
Occupational Therapist
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 899-7913
BEN WALTER
Counselor
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 899-7084
ADAM KALEY
Counselor
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 682-2371
CAROLINE REBECCA STONER
Counselor
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 464-1570
NATASHA MACH
Counselor
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 682-2371
BUDDIE PETREY
Counselor
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 682-2371
MR. BRIAN LEBAN
Counselor
1618 S LANE ST
SEATTLE, WA 98144
King County (206) 464-1570

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Matthew Ellefson's NPI number?

The NPI number for Matthew Ellefson is 1609574144. It was assigned to this individual provider in the NPPES registry on February 22, 2023.

Where is Matthew Ellefson located?

Matthew Ellefson practices at 1618 S Lane St, Seattle, WA 98144. The listed phone number is (206) 550-5894.

What is Matthew Ellefson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Matthew Ellefson was last updated on February 22, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.