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IAS ARIZONA PLLC
NPI 1689359747
Anesthesiology in Tucson, AZ

Active since June 16, 2023
5301 E GRANT RD, TUCSON, AZ 85712(520) 327-5461 Get Directions Write a Review

NPPES record last updated: August 30, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 30, 2023, Jun 16, 2023 (2 updates tracked since 2023).

About Ias Arizona Pllc NPPES

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

IAS ARIZONA PLLC (NPI 1689359747) is a healthcare organization registered as an anesthesiology in Tucson, Arizona and active in the NPI registry since June 2023. The organization lists Nestor Zenarosa, Md, as its authorized official.

NPPES Registry Identity

NPI1689359747
Entity TypeOrganization
Primary Taxonomy207L00000X
Legal Business NameIAS ARIZONA PLLC
Location Address5301 E GRANT RDTucson, AZ 85712-2805
Mailing AddressPo Box 3446Indianapolis, IN 46206-3446 · (469) 420-5527
Phone(520) 327-5461
Organization SubpartNo
Authorized OfficialNestor ZenarosaMd · (469) 420-5527
Enumeration DateJune 16, 2023
Last NPPES UpdateAugust 30, 20232 updates tracked since enumeration
NPPES CertifiedAugust 30, 2023
✔ NPI 1689359747 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
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)

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

Clinicians Billing Medicare Through This Organization

262

Medicare enrollment records show 262 clinicians reassign Medicare billing to Ias Arizona PLLC, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 108 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Anesthesiology168
Certified Registered Nurse Anesthetist (CRNA)92
Pain Management2

Nearest to this location (20)

See all 262
Kyung Chen, MD
Pain Management
NPI 1700108925
5301 E. GRANT RD. ORTHOPAEDIC BLDG, 1ST FLOOR
Tucson, AZ 85712
(520) 784-6200
✔ PECOS✔ Accepts MedicareSame address
Faria Duja
Certified Registered Nurse Anesthetist (CRNA)
NPI 1417762915
5301 E GRANT RD
Tucson, AZ 85712
(520) 327-5461
✔ Accepts MedicareSame address
William Foster, MD
Anesthesiology
NPI 1093204174
5301 E GRANT RD
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts MedicareSame address
Shawn Kelly, APRN-CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1376403923
5301 E GRANT RD
Tucson, AZ 85712
(520) 327-5461
✔ Accepts MedicareSame address
Aaron Kotamarti
Anesthesiology
NPI 1689311573
5301 E GRANT RD
Tucson, AZ 85712
(214) 649-7792
✔ PECOSSame address
Casey Mock, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1184417743
5301 E GRANT RD
Tucson, AZ 85712
(520) 327-5461
✔ Accepts MedicareSame address
Juliet Nash, MD
Anesthesiology
NPI 1700373255
5301 E GRANT RD
Tucson, AZ 85712
(520) 327-5461
✔ PECOS✔ Accepts MedicareSame address
Janavi Rao, M.D.
Anesthesiology
NPI 1356754063
5355 E ERICKSON DR
Tucson, AZ 85712
(520) 324-2080
✔ PECOS✔ Accepts Medicare0.2 mi
Marina Novack, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1649742990
5240 E KNIGHT DR STE 104
Tucson, AZ 85712
(540) 545-1021
✔ Accepts Medicare0.3 mi
Neesann Marietta, MD
Anesthesiology
NPI 1972834364
2121 N CRAYCROFT RD BLDG 8
Tucson, AZ 85712
(520) 230-7156
✔ PECOS✔ Accepts Medicare0.3 mi
Annette Monterrosa Piercecchi, MD
Anesthesiology
NPI 1154347243
2121 N CRAYCROFT RD
Tucson, AZ 85712
(520) 731-5500
✔ PECOS✔ Accepts Medicare0.3 mi
Jennifer Blume, MD
Anesthesiology
NPI 1043667314
2810 N SWAN RD
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Adam Dadeppo, M.D.
Anesthesiology
NPI 1427021799
2810 N SWAN RD STE 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Kevin Evans, D.O.
Anesthesiology
NPI 1003252123
2810 N SWAN RD STE 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Rowan Evans-Lomayesva, M.D.
Anesthesiology
NPI 1609212737
2810 N SWAN RD STE 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Trevor Green, D.O.
Anesthesiology
NPI 1770796716
2810 N SWAN RD 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Monica Guzman Zayas, M.D.
Anesthesiology
NPI 1104182617
2810 N SWAN RD STE 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Mark Johnson, M.D.
Anesthesiology
NPI 1881953578
2810 N SWAN RD STE 1002810N
Tucson, AZ 85712
(520) 324-2030
✔ PECOS✔ Accepts Medicare0.9 mi
Christina Kettelle, M.D.
Anesthesiology
NPI 1346545241
2810 N SWAN RD STE 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS0.9 mi
Mark Murphy, D.O.
Anesthesiology
NPI 1063868024
2810 N SWAN RD STE 100
Tucson, AZ 85712
(520) 324-2030
✔ PECOS0.9 mi
See all 262 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 Ias Arizona PLLC's NPI number?

The NPI number for Ias Arizona PLLC is 1689359747. It was assigned to this organization in the NPPES registry on June 16, 2023.

Where is Ias Arizona PLLC located?

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

What is Ias Arizona PLLC's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Ias Arizona PLLC enrolled in Medicare?

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

How many clinicians bill Medicare through Ias Arizona PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 262 clinicians in 3 Medicare specialties reassign their Medicare billing to Ias 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 Anesthesiology (168), Certified Registered Nurse Anesthetist (CRNA) (92) and Pain Management (2). Of these, 7 practice at this address and 108 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 Ias Arizona PLLC was last updated on August 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.