Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Christoph Hallahan Walsh I

Mental Health Counselor in Chicopee, MA · enumerated 2022.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1649902453

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Christoph Hallahan Walsh I

Sex Male

Practice address Chicopee, MA, 01013

Phone (413) 540-2107

Enumeration date Jun 29, 2022

Last updated in NPPES Jun 29, 2022

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

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 → Validate an NPI →

Frequently asked questions

Where does Christoph Walsh practice?

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

What is the NPI number for Christoph Walsh?

The National Provider Identifier (NPI) for Christoph Walsh is 1649902453, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-29.