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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM JOSEPH BLAHA M.D.
NPI 1801859095
Psychiatry & Neurology - Neurology in Grass Valley, CA

Active since April 09, 2006
152 CATHERINE LN, SUITE F, GRASS VALLEY, CA 95945(530) 272-2858(530) 272-1832 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Joseph Blaha M.d. NPPES

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

DR. WILLIAM JOSEPH BLAHA M.D. (NPI 1801859095) is an individual neurology provider in Grass Valley, California, licensed in California (G49578) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1801859095
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameDR. WILLIAM JOSEPH BLAHACredential: M.D.
Location Address152 CATHERINE LN, SUITE FGrass Valley, CA 95945-5756
Mailing Address152 Catherine Ln, Suite FGrass Valley, CA 95945-5756 · (530) 272-2858 · Fax (530) 272-1832
Phone(530) 272-2858
Fax(530) 272-1832
Sole ProprietorNo
Enumeration DateApril 9, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1801859095 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CA · G49578
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
152 CATHERINE LN, Grass Valley, CA 95945
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Other Providers at the Same Location NPPES 6

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

AUDIBEL HEARING CENTER
Hearing Instrument Specialist
152 CATHERINE LN, SUITE E
GRASS VALLEY, CA 95945
Nevada County (530) 273-8440
WENDELL DAVID CLOVE D.D.S.
Dentist (General Practice)
152 CATHERINE LN
GRASS VALLEY, CA 95945
Nevada County (530) 273-9111
DR. FRANK WEBER MINOR M.D.
Specialist
152 CATHERINE LN, STE A
GRASS VALLEY, CA 95945
Nevada County (530) 273-1111
WILLIAM J. BLAHA, M.D., INC.
Psychiatry & Neurology (Neurology)
152 CATHERINE LN, SUITE F
GRASS VALLEY, CA 95945
Nevada County (530) 272-2858
COVENANT ADVANCED PRIMARY CARE SOLUTIONS
Clinic/Center (Urgent Care)
152 CATHERINE LN, SUITE F
GRASS VALLEY, CA 95945
Nevada County (888) 966-2398
DR. RICHARD EVANS PREECE D.D.S
Dentist (General Practice)
152 CATHERINE LN
GRASS VALLEY, CA 95945
Nevada County (530) 273-9111

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 William Blaha's NPI number?

The NPI number for William Blaha is 1801859095. It was assigned to this individual provider in the NPPES registry on April 9, 2006.

Where is William Blaha located?

William Blaha practices at 152 Catherine Ln Suite F, Grass Valley, CA 95945. The listed phone number is (530) 272-2858.

What is William Blaha's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

When was this NPI record last updated?

The NPPES record for William Blaha was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.