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OSCAR DIAZ M.D.
NPI 1174618383
Pediatrics in Chicago, IL

Active since October 04, 2006PECOS Enrolled
3303 W 26TH ST, CHICAGO, IL 60623(773) 277-6589(773) 277-1841 Get Directions Write a Review

NPPES record last updated: September 11, 2013. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Oscar Diaz M.d. NPPES

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

OSCAR DIAZ M.D. (NPI 1174618383) is an individual pediatrics provider in Chicago, Illinois, licensed in Illinois (036-082978) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1174618383
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameOSCAR DIAZCredential: M.D.
Location Address3303 W 26TH STChicago, IL 60623-4036
Mailing Address3303 W 26th StChicago, IL 60623-4036 · (773) 277-6589 · Fax (773) 277-1841
Phone(773) 277-6589
Fax(773) 277-1841
Sole ProprietorNo
Enumeration DateOctober 4, 2006
Last NPPES UpdateSeptember 11, 2013
✔ NPI 1174618383 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036-082978
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.
3303 W 26TH ST, Chicago, IL 60623
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Other Identifiers 2

Medicare UPINF51996
Medicare PIN367830

Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Oscar Diaz 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 60623 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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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 15

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

ILSE GABRIELA VEGA FNP-BC
Nurse Practitioner (Family)
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589
SUKHVEER WAHI MD
Family Medicine
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589
ACCESS COMMUNITY HEALTH NETWORK
Clinic/Center (Federally Qualified Health Center (FQHC))
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589
CHARLENE UY DMD
Dentist
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 552-1926
PUJA S PATEL
Physician Assistant (Medical)
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589
DR. JORGE LUIS CASTILLO GONZALEZ M.D.
Psychiatry & Neurology (Child & Adolescent Psychiatry)
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589
PINAKI NALIN PATEL D.O.
Pediatrics
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589
JESSICA HAAG CNM, MSN
Advanced Practice Midwife
3303 W 26TH ST
CHICAGO, IL 60623
Cook County (773) 277-6589

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 Oscar Diaz's NPI number?

The NPI number for Oscar Diaz is 1174618383. It was assigned to this individual provider in the NPPES registry on October 4, 2006.

Where is Oscar Diaz located?

Oscar Diaz practices at 3303 W 26th St, Chicago, IL 60623. The listed phone number is (773) 277-6589.

What is Oscar Diaz's specialty?

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

Is Oscar Diaz enrolled in Medicare?

Yes. Oscar Diaz is registered in the Medicare PECOS enrollment system.

What insurance does Oscar Diaz accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Oscar Diaz 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 Oscar Diaz was last updated on September 11, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.