Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Ally M Trefts, AOD

Addiction (Substance Use Disorder) Counselor in Santa Barbara, CA · enumerated 2007.

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

National Provider Identifier

1942421565

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Registry record

Entity type Individual (Type 1)

Name Ms. Ally M Trefts

Credential AOD

Sex Female

Practice address 2950 State St. Ste. A, Santa Barbara, CA, 93105

Phone (805) 898-1018

Fax (805) 898-1056

Enumeration date May 1, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier	Type	State	Issuer
42AB	Medicaid	CA	-

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

Is NPI 1942421565 active?

Yes, as of the latest NPPES snapshot, NPI 1942421565 is active (record last updated 2007-07-08).

How do I verify Ally Trefts's NPI record?

Cross-check NPI 1942421565 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Michael Robson Addiction (Substance Use Disorder) Counselor · Santa Barbara, CA NPI 1497976153 Suyapa Contreras Addiction (Substance Use Disorder) Counselor · Santa Barbara, CA NPI 1316133846 Stewart White Orthodontics and Dentofacial Orthopedics Dentistry · Santa Barbara, CA NPI 1023311248

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.