Mr. Andrew Weiher

Mr. Andrew Weiher is a Behavior Analyst provider (Behavior Analyst) practicing in Walnut Creek, CA, registered in the NPPES registry with NPI 1356739270 since 2014.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1356739270
Entity type	Individual (Type 1)
Name	Mr. Andrew Weiher
Sex	Male
Practice address	Walnut Creek, CA, 94596
Phone	9252561100
Fax	9252561122
Enumeration date	2014-12-30
Last updated in NPPES	2014-12-30

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103K00000X	Behavior Analyst	Primary	1-14-17290	CA

Copy-ready billing details

Provider: Andrew Weiher
NPI: 1356739270
Taxonomy: 103K00000X (Behavior Analyst)
Address: Walnut Creek, CA, 94596

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1487918207	Casey Dudley	Individual	Behavior Analyst	Walnut Creek, CA

Verify this record

Cross-check NPI 1356739270 against the authoritative CMS record: view Mr. Andrew Weiher on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

What is the NPI number for Andrew Weiher?

The National Provider Identifier (NPI) for Andrew Weiher is 1356739270, a Type 1 (individual) record in the CMS NPPES registry.

Where does Andrew Weiher practice?

The practice location on file with NPPES is in Walnut Creek, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-12-30.