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DARREN J HAMMERGREN NP
NPI 1619165636
Nurse Practitioner - Psychiatric/Mental Health in Tucson, AZ

Active since October 04, 2007
5920 E PIMA ST STE 140, TUCSON, AZ 85712(520) 747-2861(520) 733-3444 Get Directions Write a Review

NPPES record last updated: October 25, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Darren J Hammergren Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DARREN J HAMMERGREN NP (NPI 1619165636) is a healthcare organization registered as a psychiatric/mental health in Tucson, Arizona and active in the NPI registry since October 2007. The organization lists Darren J Hammergren, Owner, as its authorized official.

NPPES Registry Identity

NPI1619165636
Entity TypeOrganization
Primary Taxonomy363LP0808X
Legal Business NameDARREN J HAMMERGREN LLC
Location Address5920 E PIMA ST STE 140Tucson, AZ 85712-4380
Mailing Address5920 E Pima St Ste 140Tucson, AZ 85712-4380 · (520) 747-2861 · Fax (520) 733-3444
Phone(520) 747-2861
Fax(520) 733-3444
Organization SubpartNo
Authorized OfficialDarren J HammergrenOwner · (520) 747-2861
Enumeration DateOctober 4, 2007
Last NPPES UpdateOctober 25, 2021
NPPES CertifiedOctober 25, 2021
✔ NPI 1619165636 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in AZ · AP 2617
5920 E PIMA ST STE 140, Tucson, AZ 85712
Open in Google Maps ↗

Other Names 1

Doing Business AsDarren J Hammergren Np

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Darren J Hammergren Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Darren J Hammergren Np, which bills Medicare for the services this clinician delivers.

Clinician (1)

Darren Hammergren, NP
Nurse Practitioner
NPI 1386669885
5920 E PIMA ST STE 140
Tucson, AZ 85712
(520) 747-2861
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Darren J Hammergren LLC's NPI number?

The NPI number for Darren J Hammergren LLC is 1619165636. It was assigned to this organization in the NPPES registry on October 4, 2007. The provider is doing business as Darren J Hammergren Np.

Where is Darren J Hammergren LLC located?

Darren J Hammergren LLC is located at 5920 E Pima St Ste 140, Tucson, AZ 85712. The listed phone number is (520) 747-2861.

What is Darren J Hammergren LLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Darren J Hammergren LLC enrolled in Medicare?

Yes. Darren J Hammergren LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Darren J Hammergren LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Nurse Practitioner) reassigns their Medicare billing to Darren J Hammergren LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Darren J Hammergren LLC was last updated on October 25, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.