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MARIA IRENE VICTORIA HERRERA ONAGAN M.D.
NPI 1689871212
Pediatrics in Joliet, IL

Active since June 28, 2007PECOS Enrolled
2100 GLENWOOD AVE STE 100-112, JOLIET, IL 60435(815) 514-2040(815) 730-6382 Get Directions Write a Review

NPPES record last updated: October 3, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 24, 2021, Mar 20, 2018 (2 updates tracked since 2018).

About Maria Irene Victoria Herrera Onagan M.d. NPPES

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

MARIA IRENE VICTORIA HERRERA ONAGAN M.D. (NPI 1689871212) is an individual pediatrics provider in Joliet, Illinois, licensed in Illinois (036.126265) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1689871212
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameMARIA IRENE VICTORIA HERRERA ONAGANCredential: M.D.
Location Address2100 GLENWOOD AVE STE 100-112Joliet, IL 60435-5487
Mailing AddressPo Box 713260Chicago, IL 60677-1260 · (630) 469-9200
Phone(815) 514-2040
Fax(815) 730-6382
Sole ProprietorNo
Enumeration DateJune 28, 2007
Last NPPES UpdateOctober 3, 20252 updates tracked since enumeration
NPPES CertifiedOctober 3, 2025
✔ NPI 1689871212 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036.126265
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
2100 GLENWOOD AVE STE 100-112, Joliet, IL 60435
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Secondary Practice Locations 3

Location 1301 Madison St Ste 210Joliet, IL 60435-7055 · Phone (815) 725-4579 · Fax (815) 725-0007
Location 2410 E Lincoln Hwy Ste 251New Lenox, IL 60451-1976 · Phone (815) 485-2541
Location 3831 N Larkin AveJoliet, IL 60435-3460 · Phone (815) 741-8888 · Fax (815) 730-3323

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maria Irene Victoria Herrera Onagan M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60435 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

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

DIANE CHIEN MD
Pediatrics
2100 GLENWOOD AVE STE 100-112
JOLIET, IL 60435
Will County (815) 514-2040

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 Maria Irene Victoria Onagan's NPI number?

The NPI number for Maria Irene Victoria Onagan is 1689871212. It was assigned to this individual provider in the NPPES registry on June 28, 2007.

Where is Maria Irene Victoria Onagan located?

Maria Irene Victoria Onagan practices at 2100 Glenwood Ave Ste 100-112, Joliet, IL 60435. The listed phone number is (815) 514-2040.

What is Maria Irene Victoria Onagan's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Maria Irene Victoria Onagan enrolled in Medicare?

Yes. Maria Irene Victoria Onagan is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maria Irene Victoria Onagan was last updated on October 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.