IES ARIZONA PLLC
NPI 1821752213
Emergency Medicine in Tucson, AZ

Q: What is Ies Arizona PLLC's NPI number?

The NPI number for Ies Arizona PLLC is 1821752213. It was assigned to this organization in the NPPES registry on October 22, 2021.

Q: What is Ies Arizona PLLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Ies Arizona PLLC was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.

Active since October 22, 2021

5301 E GRANT RD, TUCSON, AZ 85712(520) 327-5461 Get Directions Write a Review

NPPES record last updated: August 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 12, 2025, Nov 22, 2022, Apr 7, 2022 and 1 more (4 updates tracked since 2021).

On this page

About Ies Arizona Pllc NPPES

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

IES ARIZONA PLLC (NPI 1821752213) is a healthcare organization registered as an emergency medicine in Tucson, Arizona and active in the NPI registry since October 2021. The organization lists Nestor Zenarosa, Authorized Official, as its authorized official.

NPPES Registry Identity

NPI1821752213

Entity TypeOrganization

Primary Taxonomy207P00000X

Legal Business NameIES ARIZONA PLLC

Location Address5301 E GRANT RDTucson, AZ 85712-2805

Mailing AddressPo Box 743801Los Angeles, CA 90074-3801

Phone(520) 327-5461

Organization SubpartNo

Authorized OfficialNestor ZenarosaAuthorized Official · (469) 420-5544

Enumeration DateOctober 22, 2021

Last NPPES UpdateAugust 12, 20254 updates tracked since enumeration

NPPES CertifiedAugust 12, 2025

✔ NPI 1821752213 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

5301 E GRANT RD, Tucson, AZ 85712

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Ies Arizona Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

121

Medicare enrollment records show 121 clinicians reassign Medicare billing to Ies Arizona PLLC, which bills Medicare for the services they deliver. Of these, 10 practice at this address and 44 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Emergency Medicine87

Pediatric Medicine24

Nurse Practitioner10

Nearest to this location (20)

See all 121

Molly Curtiss, DO

Emergency Medicine

NPI 1285379404

5301 E GRANT RD
Tucson, AZ 85712

(520) 626-5582

✔ PECOS✔ Accepts MedicareSame address

James Dill, M.D.

Emergency Medicine

NPI 1093135725

5301 E GRANT RD
Tucson, AZ 85712

(520) 327-5461

✔ PECOS✔ Accepts MedicareSame address

Stephanie Duque

Emergency Medicine

NPI 1164004800

5301 E GRANT RD
Tucson, AZ 85712

(520) 327-5461

✔ PECOS✔ Accepts MedicareSame address

Brian Hagerty, MD

Pediatric Medicine

NPI 1134201189

5301 E GRANT ROAD TUCSON MEDICAL CENTER EMERGENCY DEPARTMENT
Tucson, AZ 85712

(520) 324-1922

✔ PECOSSame address

Joseph Liu, DO

Emergency Medicine

NPI 1194353144

5301 E GRANT RD
Tucson, AZ 85712

(520) 324-1922

✔ PECOS✔ Accepts MedicareSame address

Charles Peterson, MD

Emergency Medicine

NPI 1437234499

5301 E GRANT ROAD TUCSON MEDICAL CENTER EMERGENCY DEPARTMENT
Tucson, AZ 85712

(520) 324-1922

✔ PECOS✔ Accepts MedicareSame address

Ana Novilla Swafford, MD

Emergency Medicine

NPI 1851613889

5301 E GRANT RD
Tucson, AZ 85712

(520) 234-5070

✔ PECOSSame address

Brian Tenelshof, MD

Emergency Medicine

NPI 1679584387

5301 E GRANT RD
Tucson, AZ 85712

(520) 324-1922

✔ PECOS✔ Accepts MedicareSame address

Richard Wagner, M.D

Emergency Medicine

NPI 1417032079

5301 E GRANT RD
Tucson, AZ 85712

(520) 327-5461

✔ PECOSSame address

Sarah Hypes, MD

Emergency Medicine

NPI 1760795371

5301 E GRANT RD
Tucson, AZ 85712

(313) 745-3000

✔ PECOS✔ Accepts MedicareSame address

Timothy Bohan, NP

Nurse Practitioner

NPI 1831271840

5700 E PIMA STREET SUITE B
Tucson, AZ 85712

(520) 324-1922

✔ PECOS✔ Accepts Medicare0.8 mi

Patrick Hollinger, M.D.

Emergency Medicine

NPI 1134569957

1842 E ELM ST
Tucson, AZ 85719

(520) 626-7233

✔ PECOS✔ Accepts Medicare3.9 mi

Marikah Davin, MD

Emergency Medicine

NPI 1679066427

1501 N CAMPBELL AVE
Tucson, AZ 85724

(520) 626-7233

✔ PECOS✔ Accepts Medicare4.0 mi

Martin Demant

Pediatric Medicine

NPI 1003264581

1501 N CAMPBELL AVE
Tucson, AZ 85724

(520) 626-6507

✔ PECOS✔ Accepts Medicare4.0 mi

Nathaniel Fox, MD

Emergency Medicine

NPI 1982193421

1501 N CAMPBELL AVE
Tucson, AZ 85724

(520) 626-7233

✔ PECOS✔ Accepts Medicare4.0 mi

Michael Karadsheh, MD

Pediatric Medicine

NPI 1740255850

1501 N CAMPBELL AVE
Tucson, AZ 85724

(520) 874-3500

✔ PECOS4.0 mi

Katherine Kurland

Pediatric Medicine

NPI 1346773694

1501 N CAMPBELL AVE
Tucson, AZ 85724

(520) 626-7944

✔ PECOS✔ Accepts Medicare4.0 mi

Marie Olson, MD

Pediatric Medicine

NPI 1386726313

1501 N CAMPBELL AVE UNIVERSITY OF ARIZONA MEDICAL CENTER
Tucson, AZ 85724

(520) 626-6614

✔ PECOS4.0 mi

Carrie Serra, M.D.

Emergency Medicine

NPI 1245493907

1501 N CAMPBELL AVE
Tucson, AZ 85724

(520) 626-7233

✔ PECOS✔ Accepts Medicare4.0 mi

Courtney Stine

Nurse Practitioner

NPI 1992460620

1625 N CAMPBELL AVE
Tucson, AZ 85719

(520) 906-1705

✔ PECOS4.8 mi

See all 121 clinicians

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 Ies Arizona PLLC's NPI number?

The NPI number for Ies Arizona PLLC is 1821752213. It was assigned to this organization in the NPPES registry on October 22, 2021.

Where is Ies Arizona PLLC located?

Ies Arizona PLLC is located at 5301 E Grant Rd, Tucson, AZ 85712. The listed phone number is (520) 327-5461.

What is Ies Arizona PLLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Ies Arizona PLLC enrolled in Medicare?

Yes. Ies Arizona PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ies Arizona PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 121 clinicians in 3 Medicare specialties reassign their Medicare billing to Ies Arizona PLLC. 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. The largest specialties are Emergency Medicine (87), Pediatric Medicine (24) and Nurse Practitioner (10). Of these, 10 practice at this address and 44 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Ies Arizona PLLC was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.