ASSOCIATED INTERNISTS OF TUCSON, PLLC
NPI 1558318345
Internal Medicine in Tucson, AZ
About Associated Internists Of Tucson, Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ASSOCIATED INTERNISTS OF TUCSON, PLLC (NPI 1558318345) is a healthcare organization registered as an internal medicine in Tucson, Arizona and active in the NPI registry since May 2006. The organization lists Nicholas R Bastiampillai, Member, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted 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)
Associated Internists Of Tucson, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
19Medicare enrollment records show 19 clinicians reassign Medicare billing to Associated Internists Of Tucson, PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 14 within 10 miles. They are listed nearest first.
Clinicians by Medicare Specialty 5
Clinicians, nearest first (19)
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 Associated Internists Of Tucson, PLLC's NPI number?
The NPI number for Associated Internists Of Tucson, PLLC is 1558318345. It was assigned to this organization in the NPPES registry on May 27, 2006.
Where is Associated Internists Of Tucson, PLLC located?
Associated Internists Of Tucson, PLLC is located at 6501 E Santa Aurelia, Tucson, AZ 85715. The listed phone number is (520) 296-1206.
What is Associated Internists Of Tucson, PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Associated Internists Of Tucson, PLLC enrolled in Medicare?
Yes. Associated Internists Of Tucson, PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Associated Internists Of Tucson, PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 19 clinicians in 5 Medicare specialties reassign their Medicare billing to Associated Internists Of Tucson, 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 Nurse Practitioner (15), Family Practice (1) and Internal Medicine (1). Of these, 1 practice at this address and 14 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Associated Internists Of Tucson, PLLC accept?
Health plans from Cigna HealthCare of Arizona, Inc list Associated Internists Of Tucson, PLLC 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 Associated Internists Of Tucson, PLLC was last updated on August 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Associated Internists Of Tucson, Pllc · NPI 1558318345
Internal Medicine organization in Tucson, Arizona. Organization record, active in the CMS NPPES registry since May 27, 2006.
## Identity
- **NPI:** 1558318345 (Entity type: Organization)
- **Enumerated:** May 27, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Nicholas Bastiampillai, MEMBER
## Practice location
- **Address:** 6501 E SANTA AURELIA, Tucson, AZ 85715-3127
- **Phone:** (520) 296-1206 · **Fax:** (520) 296-7410
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 19 clinicians in 5 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (15), Family Practice (1), Internal Medicine (1); 1 practice at this address and 14 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 28, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1558318345) · Data from the CMS NPPES public registry.