PREM S PILLAY MD
NPI 1669438552
Internal Medicine - Cardiovascular Disease in Chandler, AZ
About Prem S Pillay Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PREM S PILLAY MD (NPI 1669438552) is an individual cardiovascular disease provider in Chandler, Arizona, licensed in Arizona (38206) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with St. Patrick Hospital, and maintains a secondary practice location in Casa Grande.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Prem S Pillay Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
8Medicare enrollment records show Prem Pillay reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chandler, AZ 85224
- Reassigned Medicare billing, Arizona enrollment
- 10 clinicians in this Medicare group
Lakeway, TX 78734
- Reassigned Medicare billing, Texas enrollment
- 3,167 clinicians in this Medicare group
Dallas, TX 75234
- Reassigned Medicare billing, Texas enrollment
- 45 clinicians in this Medicare group
Butte, MT 59701
- Reassigned Medicare billing, Montana enrollment
- 325 clinicians in this Medicare group
East Liverpool, OH 43920
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 clinicians in this Medicare group
Claremont, NH 03743
- Reassigned Medicare billing, New Hampshire enrollment
- 2,999 clinicians in this Medicare group
Keene, NH 03431
- Reassigned Medicare billing, New Hampshire enrollment
- 450 clinicians in this Medicare group
Lebanon, NH 03756
- Reassigned Medicare billing, New Hampshire enrollment
- 2,620 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St. Patrick Hospital
Acute Care Hospitals · Missoula, MTProvidence St Joseph Medical Center
Critical Access Hospitals · Polson, MTCheshire Medical Center
Acute Care Hospitals · Keene, NHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85224 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHANDLER, AZ 85224
CHANDLER, AZ 85224
CHANDLER, AZ 85224
CHANDLER, AZ 85224
CHANDLER, AZ 85224
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 Prem Pillay's NPI number?
The NPI number for Prem Pillay is 1669438552. It was assigned to this individual provider in the NPPES registry on April 21, 2006.
Where is Prem Pillay located?
Prem Pillay practices at 1445 W Chandler Blvd Building B-10, Chandler, AZ 85224. The listed phone number is (480) 917-5900.
What is Prem Pillay's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Prem Pillay enrolled in Medicare?
Yes. Prem Pillay is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Prem Pillay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Prem Pillay reassigns Medicare benefits to 8 organizations: Cedars Heart Clinic, LLC (Chandler, AZ), Healthtexas Provider Network (Lakeway, TX), Dallas Medical Physician Group (Dallas, TX), Providence Health & Services Mt (Butte, MT), University Of Pittsburgh Physicians (East Liverpool, OH) and 3 more organizations, listed in the Medicare section above. Each 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 Prem Pillay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Prem Pillay accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Arizona and Blue Cross and Blue Shield of Texas and 6 other insurers list Prem Pillay 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.
Is Prem Pillay affiliated with any hospitals?
According to CMS data, Prem Pillay is affiliated with St. Patrick Hospital, Providence St Joseph Medical Center and Cheshire Medical Center.
When was this NPI record last updated?
The NPPES record for Prem Pillay was last updated on April 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Prem S Pillay, MD · NPI 1669438552
Cardiovascular Disease physician in Chandler, Arizona. Individual provider, active in the CMS NPPES registry since April 21, 2006.
## Identity
- **NPI:** 1669438552 (Entity type: Individual)
- **Enumerated:** April 21, 2006
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 38206 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 1445 W CHANDLER BLVD, BUILDING B-10, Chandler, AZ 85224-6238
- **Phone:** (480) 917-5900 · **Fax:** (520) 836-6663
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 8 organizations under Medicare reassignment (form CMS-855R): Cedars Heart Clinic, LLC (NPI 1902815897, Chandler, AZ); Healthtexas Provider Network (NPI 1689512493, Lakeway, TX); Dallas Medical Physician Group (NPI 1033551312, Dallas, TX); Providence Health & Services Mt (NPI 1538394267, Butte, MT); University Of Pittsburgh Physicians (NPI 1811945793, East Liverpool, OH); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1979
## Record status
- **NPPES last updated:** April 15, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1669438552) · Data from the CMS NPPES public registry.