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

Mr. Darren J Hammergren, NP

Psychiatric/Mental Health Nurse Practitioner in Tucson, AZ · enumerated 2006.

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

National Provider Identifier

1386669885

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Registry record

Entity type Individual (Type 1)
Name Mr. Darren J Hammergren
Credential NP
Sex Male
Practice address Tucson, AZ, 85712
Phone (520) 747-2861
Fax (520) 733-3444
Enumeration date Jul 13, 2006
Last updated in NPPES Oct 25, 2021

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

Taxonomy & licenses

163WP0809X Adult Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License RN108557 (AZ) Secondary
363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP 2617 (AZ) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

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.

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Frequently asked questions

Where does Darren Hammergren practice?
The practice location on file with NPPES is in Tucson, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Darren Hammergren?
The National Provider Identifier (NPI) for Darren Hammergren is 1386669885, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-25.