Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

NATHAN CARLSEN CSAC
NPI 1992553671
Counselor - Addiction (Substance Use Disorder) in Chippewa Falls, WI

Q: What is Nathan Carlsen's NPI number?

The NPI number for Nathan Carlsen is 1992553671. It was assigned to this individual provider in the NPPES registry on May 8, 2024.

Q: What is Nathan Carlsen's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Nathan Carlsen was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.

Active since May 08, 2024

321 FRENETTE DR STE C, CHIPPEWA FALLS, WI 54729(715) 861-5427 Get Directions Write a Review

NPPES record last updated: October 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 12, 2026, May 8, 2024 (2 updates tracked since 2024).

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About Nathan Carlsen Csac NPPES

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

NATHAN CARLSEN CSAC (NPI 1992553671) is an individual addiction (substance use disorder) provider in Chippewa Falls, Wisconsin, licensed in Wisconsin (17374-132) and active in the NPI registry since May 2024. He maintains a secondary practice location in Eau Claire.

NPPES Registry Identity

NPI1992553671

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameNATHAN CARLSENCredential: CSAC

Location Address321 FRENETTE DR STE CChippewa Falls, WI 54729-3467

Mailing AddressPo Box 68Menomonie, WI 54751-0068 · (715) 635-4858 · Fax (715) 235-2688

Phone(715) 861-5427

Sole ProprietorNo

Enumeration DateMay 8, 2024

Last NPPES UpdateOctober 12, 20262 updates tracked since enumeration

NPPES CertifiedOctober 12, 2026

✔ NPI 1992553671 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

License✔ Licensed in WI · 17374-132

321 FRENETTE DR STE C, Chippewa Falls, WI 54729

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Secondary Practice Location 1

Location 12150 Eastridge CtrEau Claire, WI 54701-3403 · Phone (715) 861-5427

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Quartz, Security Health Plan.Insurance ›

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 Nathan Carlsen's NPI number?

The NPI number for Nathan Carlsen is 1992553671. It was assigned to this individual provider in the NPPES registry on May 8, 2024.

Where is Nathan Carlsen located?

Nathan Carlsen practices at 321 Frenette Dr Ste C, Chippewa Falls, WI 54729. The listed phone number is (715) 861-5427.

What is Nathan Carlsen's specialty?

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

What insurance does Nathan Carlsen accept?

Health plans from Quartz and Security Health Plan list Nathan Carlsen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Nathan Carlsen was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.