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DR. RENATO M FONTANILLA MD
NPI 1285635995
Pediatrics - Neonatal-Perinatal Medicine in Chicago, IL

Active since August 03, 2005PECOS Enrolled
2300 N CHILDRENS PLZ # 152, CHICAGO, IL 60614(773) 880-6903(773) 880-3068 Get Directions Write a Review

NPPES record last updated: January 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 22, 2026, Jan 6, 2026 (2 updates tracked since 2026).

About Dr. Renato M Fontanilla Md NPPES

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

DR. RENATO M FONTANILLA MD (NPI 1285635995) is an individual neonatal-perinatal medicine provider in Chicago, Illinois, licensed in Illinois (036-095712) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS and maintains a secondary practice location in Downers Grove.

NPPES Registry Identity

NPI1285635995
Entity TypeIndividualMale
Primary Taxonomy2080N0001X
Provider Legal NameDR. RENATO M FONTANILLACredential: MD
Location Address2300 N CHILDRENS PLZ # 152Chicago, IL 60614-3363
Mailing Address1524 Overlook DrGlenview, IL 60025-5162 · (847) 729-0638
Phone(773) 880-6903
Fax(773) 880-3068
Sole ProprietorNo
Enumeration DateAugust 3, 2005
Last NPPES UpdateJanuary 22, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 22, 2026
✔ NPI 1285635995 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in IL · 036-095712
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
2300 N CHILDRENS PLZ # 152, Chicago, IL 60614
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Secondary Practice Location 1

Location 13815 Highland AveDowners Grove, IL 60515-1500 · Phone (630) 275-4495 · Fax (630) 275-2028

Other Identifiers 1

Medicaid036-095712-3IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Renato M Fontanilla Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Renato Fontanilla reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advocate Health And Hospitals Corp.
1.5 mi
Cardiovascular Disease
3118 N ASHLAND AVE
Chicago, IL 60657
  • Reassigned Medicare billing, Illinois enrollment
  • 4,870 clinicians in this Medicare group
NPI 1487951711 (773) 880-9722
Bonaventure Medical Foundation, LLC
20 mi
Family Medicine
701 BIESTERFIELD RD UNIT 4D
Elk Grove Village, IL 60007
  • Reassigned Medicare billing, Illinois enrollment
  • 281 clinicians in this Medicare group
NPI 1588775647 (855) 692-6482

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

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. AMANDEEP K CHEEMA MD
Pediatrics
2300 N CHILDRENS PLZ # 152
CHICAGO, IL 60614
Cook County (773) 880-6391

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 Renato Fontanilla's NPI number?

The NPI number for Renato Fontanilla is 1285635995. It was assigned to this individual provider in the NPPES registry on August 3, 2005.

Where is Renato Fontanilla located?

Renato Fontanilla practices at 2300 N Childrens Plz # 152, Chicago, IL 60614. The listed phone number is (773) 880-6903.

What is Renato Fontanilla's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Renato Fontanilla enrolled in Medicare?

Yes. Renato Fontanilla is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Renato Fontanilla's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Renato Fontanilla reassigns Medicare benefits to 2 organizations: Advocate Health And Hospitals Corp. (Chicago, IL) and Bonaventure Medical Foundation, LLC (Elk Grove Village, IL). 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 Renato Fontanilla's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Renato Fontanilla accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Renato Fontanilla 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 Renato Fontanilla was last updated on January 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.