Adam Lyle Barnhardt

Adam Lyle Barnhardt is a Addiction (Substance Use Disorder) Counselor provider (Counselor) practicing in Downey, CA, registered in the NPPES registry with NPI 1164029005 since 2020.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1164029005
Entity type	Individual (Type 1)
Name	Adam Lyle Barnhardt
Sex	Male
Practice address	Downey, CA, 90241
Phone	5629234545
Enumeration date	2020-10-05
Last updated in NPPES	2020-10-05

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
101YA0400X	Addiction (Substance Use Disorder) Counselor	Primary	—	—

Copy-ready billing details

Provider: Adam Barnhardt
NPI: 1164029005
Taxonomy: 101YA0400X (Addiction (Substance Use Disorder) Counselor)
Address: Downey, CA, 90241

Verify this record

Cross-check NPI 1164029005 against the authoritative CMS record: view Adam Lyle Barnhardt 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Adam Barnhardt?

Adam Barnhardt is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-10-05.