Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Darlene L Zimmer, OTR

Specialist in Tucson, AZ · enumerated 2013.

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

National Provider Identifier

1265874580

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Registry record

Entity type Individual (Type 1)

Name Mrs. Darlene L Zimmer

Credential OTR

Sex Female

Practice address 8797 N Norway Spruce Rd, Tucson, AZ, 85743

Phone (970) 391-0444

Enumeration date Jul 28, 2013

Last updated in NPPES May 17, 2015

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 645 (CO) Primary

174400000X Specialist Other Service Providers · License OT-1261 (ID) Secondary

174400000X Specialist Other Service Providers · License 2013032199 (MO) Secondary

174400000X Specialist Other Service Providers · License 8750456-4201 (UT) Secondary

174400000X Specialist Other Service Providers · License 6153 (AZ) Secondary

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

How do I verify Darlene Zimmer's NPI record?

Cross-check NPI 1265874580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1265874580 active?

Yes, as of the latest NPPES snapshot, NPI 1265874580 is active (record last updated 2015-05-17).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-17.