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SOUTHWEST GASTROENTEROLOGY LLC
NPI 1356871123
Internal Medicine - Gastroenterology in Avondale, AZ

Active since June 14, 2017CLIA 03D2275272 · Certificate of Compliance
3400 N DYSART RD STE G127, AVONDALE, AZ 85392(623) 322-0323(623) 322-0757 Get Directions Write a Review

NPPES record last updated: June 23, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 23, 2025, Mar 10, 2023, Jun 14, 2017 (3 updates tracked since 2017).

About Southwest Gastroenterology Llc NPPES

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

SOUTHWEST GASTROENTEROLOGY LLC (NPI 1356871123) is a healthcare organization registered as a gastroenterology in Avondale, Arizona and active in the NPI registry since June 2017. The organization holds a CLIA Certificate of Compliance certificate valid through March 16, 2027 and lists Rajeswari Anaparthy, Proprietor, as its authorized official.

NPPES Registry Identity

NPI1356871123
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameSOUTHWEST GASTROENTEROLOGY LLC
Location Address3400 N DYSART RD STE G127Avondale, AZ 85392-1011
Mailing Address3400 N Dysart Rd Ste G127Avondale, AZ 85392-1011 · (623) 322-0323 · Fax (623) 322-0757
Phone(623) 322-0323
Fax(623) 322-0757
Organization SubpartNo
Authorized OfficialRajeswari AnaparthyProprietor · (623) 322-0323
Enumeration DateJune 14, 2017
Last NPPES UpdateJune 23, 20253 updates tracked since enumeration
NPPES CertifiedJune 23, 2025
✔ NPI 1356871123 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
3400 N DYSART RD STE G127, Avondale, AZ 85392
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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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Cigna HealthCare of Arizona, Inc.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Southwest Gastroenterology Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Southwest Gastroenterology LLC, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Ali Alshati, MD
Gastroenterology
NPI 1538692926
3400 N DYSART RD STE G127
Avondale, AZ 85392
(623) 322-0323
✔ PECOS✔ Accepts MedicareSame address
Rajeswari Anaparthy, M.D
Gastroenterology
NPI 1467656058
3400 N DYSART RD STE G127
Avondale, AZ 85392
(623) 322-0323
✔ PECOS✔ Accepts MedicareSame address
Niel Dave, MD
Internal Medicine
NPI 1487187761
3400 N DYSART RD STE G127
Avondale, AZ 85392
(623) 322-0323
✔ PECOS✔ Accepts MedicareSame address
Aravind Sugumar, MD
Gastroenterology
NPI 1124222716
3400 N DYSART RD STE G127
Avondale, AZ 85392
(623) 322-0323
✔ PECOS✔ Accepts MedicareSame address
Angela Morrone, ACNPC-AG
Nurse Practitioner
NPI 1467136044
485 S DOBSON RD STE 201
Chandler, AZ 85224
(480) 728-4700
✔ PECOS✔ Accepts Medicare30 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 03D2275272

Southwest Gastroenterology · Avondale, AZ
Active · expires Mar 16, 2027
CLIA Number03D2275272
Laboratory TypePhysician Office
Certificate Effective DateMarch 17, 2025
Certificate Expiration DateMarch 16, 2027
Laboratory DirectorLaura E. Michael
Laboratory Phone(623) 322-0323
Laboratory LocationSouthwest Gastroenterology3400 N Dysart Rd Ste G-127, Avondale, AZ 85392
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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 Southwest Gastroenterology LLC's NPI number?

The NPI number for Southwest Gastroenterology LLC is 1356871123. It was assigned to this organization in the NPPES registry on June 14, 2017.

Where is Southwest Gastroenterology LLC located?

Southwest Gastroenterology LLC is located at 3400 N Dysart Rd Ste G127, Avondale, AZ 85392. The listed phone number is (623) 322-0323.

What is Southwest Gastroenterology LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Southwest Gastroenterology LLC enrolled in Medicare?

Yes. Southwest Gastroenterology LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Southwest Gastroenterology LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 3 Medicare specialties reassign their Medicare billing to Southwest Gastroenterology 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. The largest specialties are Gastroenterology (3), Internal Medicine (1) and Nurse Practitioner (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Southwest Gastroenterology LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 03D2275272) is associated with this NPI, valid through March 16, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Southwest Gastroenterology LLC accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Cigna HealthCare of Arizona, Inc list Southwest Gastroenterology LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Southwest Gastroenterology LLC was last updated on June 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.