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PREMIER INTERNISTS OF NAPERVILLE INC.
NPI 1356732226
Internal Medicine in Naperville, IL

Active since February 12, 2015CLIA 14D0421752 · Waiver
620 N RIVER RD, STE 102, NAPERVILLE, IL 60563(630) 355-4755 Get Directions Write a Review

NPPES record last updated: February 12, 2015. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Premier Internists Of Naperville Inc. NPPES

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

PREMIER INTERNISTS OF NAPERVILLE INC. (NPI 1356732226) is a healthcare organization registered as an internal medicine in Naperville, Illinois and active in the NPI registry since February 2015. The organization holds a CLIA Waiver certificate valid through August 31, 2028 and lists Cicily Jones, Owner, as its authorized official.

NPPES Registry Identity

NPI1356732226
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NamePREMIER INTERNISTS OF NAPERVILLE INC.
Location Address620 N RIVER RD, STE 102Naperville, IL 60563-8950
Mailing Address620 N River Rd, Ste 102Naperville, IL 60563-8950 · (630) 355-4755
Phone(630) 355-4755
Organization SubpartNo
Authorized OfficialCicily JonesOwner · (630) 355-4755
Enumeration DateFebruary 12, 2015
✔ NPI 1356732226 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036099820
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
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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

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 Of Naperville Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Premier Internists Of Naperville Inc., which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Cicily Jones, MD
Internal Medicine
NPI 1255396511
620 N RIVER RD STE 102
Naperville, IL 60563
(630) 355-4755
✔ PECOS0.1 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.

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 Waiver 14D0421752

Premier Internists Of Naperville · Naperville, IL
Active · expires Aug 31, 2028
CLIA Number14D0421752
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorCicily Jones MD
Laboratory Phone(630) 355-4755
Laboratory LocationPremier Internists Of Naperville620 N River Rd, #102, Naperville, IL 60563
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Of Naperville Inc.'s NPI number?

The NPI number for Premier Internists Of Naperville Inc. is 1356732226. It was assigned to this organization in the NPPES registry on February 12, 2015.

Where is Premier Internists Of Naperville Inc. located?

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

What is Premier Internists Of Naperville Inc.'s specialty?

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

Is Premier Internists Of Naperville Inc. enrolled in Medicare?

Yes. Premier Internists Of Naperville Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Premier Internists Of Naperville Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians reassign their Medicare billing to Premier Internists Of Naperville Inc., in Internal Medicine and Nurse Practitioner. 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. Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Premier Internists Of Naperville Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D0421752) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Premier Internists Of Naperville Inc. was last updated on February 12, 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.