1. Home
  2. Directory
  3. Illinois
  4. Naperville
  5. Internal Medicine
  6. NPI Profile

PREMIER INTERNISTS S.C.
NPI 1295953842
Internal Medicine in Naperville, IL

Active since April 20, 2007
620 N RIVER RD, STE 102, NAPERVILLE, IL 60563(630) 355-4755(630) 355-8838 Get Directions Write a Review

NPPES record last updated: February 13, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Premier Internists S.c. NPPES

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

PREMIER INTERNISTS S.C. (NPI 1295953842) is a healthcare organization registered as an internal medicine in Naperville, Illinois and active in the NPI registry since April 2007. The organization lists Cicily Jones, President, as its authorized official.

NPPES Registry Identity

NPI1295953842
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NamePREMIER INTERNISTS S.C.
Location Address620 N RIVER RD, STE 102Naperville, IL 60563-8950
Mailing Address620 N River Rd, Ste 102Naperville, IL 60563-8950 · (630) 355-4755 · Fax (630) 355-8838
Phone(630) 355-4755
Fax(630) 355-8838
Organization SubpartNo
Authorized OfficialCicily JonesPresident · (630) 355-4755
Enumeration DateApril 20, 2007
Last NPPES UpdateFebruary 13, 2015
✔ NPI 1295953842 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
620 N RIVER RD, Naperville, IL 60563
Open in Google Maps ↗

Other Identifiers 1

Medicare UPIN211302

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Premier Internists S.c. 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 Premier Internists S.C., which bills Medicare for the services they deliver. Of these, 3 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (5)

Cicily Jones, MD
Internal Medicine
NPI 1255396511
620 N RIVER RD STE 102
Naperville, IL 60563
(630) 355-4755
✔ PECOS0.1 mi
Haidee Polgar, NP
Nurse Practitioner
NPI 1568983765
1755 PARK ST STE 200
Naperville, IL 60563
(630) 486-3664
✔ PECOS✔ Accepts Medicare2.0 mi
Sumitha Panicker, M.D.
Internal Medicine
NPI 1528279577
235 REMINGTON BLVD STE K
Bolingbrook, IL 60440
(630) 914-5153
✔ PECOS✔ Accepts Medicare8.8 mi
Litty Cyriac, NP-C
Nurse Practitioner
NPI 1407379324
13550 S ROUTE 30 STE 100
Plainfield, IL 60544
(630) 915-6373
✔ PECOS10 mi
Treesa Thomas, N.P
Nurse Practitioner
NPI 1063949840
120 N OAK ST
Hinsdale, IL 60521
(630) 789-3422
✔ PECOS✔ Accepts Medicare14 mi

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 Premier Internists S.C.'s NPI number?

The NPI number for Premier Internists S.C. is 1295953842. It was assigned to this organization in the NPPES registry on April 20, 2007.

Where is Premier Internists S.C. located?

Premier Internists S.C. is located at 620 N River Rd Ste 102, Naperville, IL 60563. The listed phone number is (630) 355-4755.

What is Premier Internists S.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Premier Internists S.C. enrolled in Medicare?

Yes. Premier Internists S.C. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Premier Internists S.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Premier Internists S.C.. 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 (3) and Internal Medicine (2). Of these, 3 practice 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 Premier Internists S.C. was last updated on February 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.