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MR. JOHN THOMAS MADSEN CADC II
NPI 1194946582
Counselor - Addiction (Substance Use Disorder) in Grass Valley, CA

Active since May 01, 2007
440 HENDERSON ST, SIUTE C, GRASS VALLEY, CA 95945(530) 273-9541(530) 273-7740 Get Directions Write a Review

NPPES record last updated: May 5, 2011. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. John Thomas Madsen Cadc Ii NPPES

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

MR. JOHN THOMAS MADSEN CADC II (NPI 1194946582) is an individual addiction (substance use disorder) provider in Grass Valley, California, licensed in California (A8539205) and active in the NPI registry since May 2007.

NPPES Registry Identity

NPI1194946582
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. JOHN THOMAS MADSENCredential: CADC II
Location Address440 HENDERSON ST, SIUTE CGrass Valley, CA 95945-7374
Mailing Address440 Henderson St, Siute CGrass Valley, CA 95945-7374 · (530) 273-9541 · Fax (530) 273-7740
Phone(530) 273-9541
Fax(530) 273-7740
Sole ProprietorYes
Enumeration DateMay 1, 2007
Last NPPES UpdateMay 5, 2011
✔ NPI 1194946582 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in CA · A8539205
Also ListedSubstance Abuse Rehabilitation FacilityTaxonomy 324500000X
440 HENDERSON ST, Grass Valley, CA 95945
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Other Providers at the Same Location NPPES 13

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

MARY GRAHAM RS
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
JOYCE PETERMAN
Social Worker
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
SARAH MICHALAK RRW
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
SHANE JONES
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
CARI ANN BARTELL
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
ROBERT ROGERS
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
PRISCILLA FRAZIER RRW
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, STE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541
TARA MCINTIRE RRW
Counselor (Addiction (Substance Use Disorder))
440 HENDERSON ST, SUITE C
GRASS VALLEY, CA 95945
Nevada County (530) 273-9541

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 John Madsen's NPI number?

The NPI number for John Madsen is 1194946582. It was assigned to this individual provider in the NPPES registry on May 1, 2007.

Where is John Madsen located?

John Madsen practices at 440 Henderson St Siute C, Grass Valley, CA 95945. The listed phone number is (530) 273-9541.

What is John Madsen'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 John Madsen was last updated on May 5, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.