MR. JOHN CHARLES DUFF III
NPI 1962732719
Counselor - Addiction (Substance Use Disorder) in Nevada City, CA

Q: What is the provider's specialty?

The provider's specialty is Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).

Active since December 29, 2009

727 ZION ST, NEVADA CITY, CA 95959(530) 265-2914 Get Directions Write a Review

NPPES record last updated: December 29, 2009. Verified against the NPPES registry weekly; last sync: July 19, 2026.

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About Mr. John Charles Duff Iii NPPES

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

MR. JOHN CHARLES DUFF III (NPI 1962732719) is an individual addiction (substance use disorder) provider in Nevada City, California, licensed in California (9852) and active in the NPI registry since December 2009.

NPPES Registry Identity

NPI1962732719

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameMR. JOHN CHARLES DUFF III

Location Address727 ZION STNevada City, CA 95959-2920

Mailing Address727 Zion StNevada City, CA 95959-2920 · (530) 265-2914

Phone(530) 265-2914

Sole ProprietorNo

Enumeration DateDecember 29, 2009

✔ NPI 1962732719 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 CA · 9852

727 ZION ST, Nevada City, CA 95959

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Other Identifiers 1

Other290007APCA · Other

Other Providers at the Same Location NPPES 9

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

MR. JAN DANIEL FRANKENBERGER RRW

Counselor (Addiction (Substance Use Disorder))