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

MS. PHYLLIS K DAY CAC
NPI 1255453940
Counselor - Addiction (Substance Use Disorder) in Nevada City, CA

Active since April 04, 2007
995 HELLING WAY, NEVADA CITY, CA 95959(530) 265-7222(530) 265-9376 Get Directions Write a Review

NPPES record last updated: July 19, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Ms. Phyllis K Day Cac NPPES

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

MS. PHYLLIS K DAY CAC (NPI 1255453940) is an individual addiction (substance use disorder) provider in Nevada City, California and active in the NPI registry since April 2007.

NPPES Registry Identity

NPI1255453940
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameMS. PHYLLIS K DAYCredential: CAC
Location Address995 HELLING WAYNevada City, CA 95959-8619
Mailing Address995 Helling WayNevada City, CA 95959-8619 · (530) 265-7222 · Fax (530) 265-9376
Phone(530) 265-7222
Fax(530) 265-9376
Sole ProprietorYes
Enumeration DateApril 4, 2007
Last NPPES UpdateJuly 19, 2026
✔ NPI 1255453940 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
995 HELLING WAY, Nevada City, CA 95959
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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.

MRS. SARAH ANN WILSON-DALEY M.S.W.
Counselor (Mental Health)
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
ALEXANDRA JOHNSON CADC
Counselor (Mental Health)
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
DAVID WAYNE COUGHRAN
Counselor
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
DIANE MOYLE PHENIX MSW
Counselor (Mental Health)
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
PETER ELIAS
Counselor
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
MRS. JENNIFER BENTE CADC II
Counselor (Mental Health)
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
NICOLE MISLEY
Counselor (Mental Health)
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222
MR. CHRISTOPHER HARBOUR
Counselor
995 HELLING WAY
NEVADA CITY, CA 95959
Nevada County (530) 265-7222

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 Phyllis Day's NPI number?

The NPI number for Phyllis Day is 1255453940. It was assigned to this individual provider in the NPPES registry on April 4, 2007.

Where is Phyllis Day located?

Phyllis Day practices at 995 Helling Way, Nevada City, CA 95959. The listed phone number is (530) 265-7222.

What is Phyllis Day'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 Phyllis Day was last updated on July 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.