1. Home
  2. Directory
  3. Illinois
  4. Chicago
  5. Pediatrics
  6. NPI Profile

DR. WALTER DANIEL PEREZ MD
NPI 1558475996
Pediatrics in Chicago, IL

Active since August 19, 2006PECOS Enrolled
2859 S PULASKI RD, CHICAGO, IL 60623(773) 762-3333(773) 762-5555 Get Directions Write a Review

NPPES record last updated: February 24, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Walter Daniel Perez Md NPPES

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

DR. WALTER DANIEL PEREZ MD (NPI 1558475996) is an individual pediatrics provider in Chicago, Illinois, licensed in Illinois (036-097752) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558475996
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. WALTER DANIEL PEREZCredential: MD
Location Address2859 S PULASKI RDChicago, IL 60623-4456
Mailing Address625 S Chatham AveElmhurst, IL 60126-4046 · (630) 359-4553 · Fax (630) 359-4552
Phone(773) 762-3333
Fax(773) 762-5555
Sole ProprietorYes
Enumeration DateAugust 19, 2006
Last NPPES UpdateFebruary 24, 2012
✔ NPI 1558475996 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036-097752
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.
2859 S PULASKI RD, Chicago, IL 60623
Open in Google Maps ↗

Other Identifiers 5

Medicare UPINE98437IL
Medicaid036097752-1IL
Medicaid036097752-2IL
Other363661051IL · Federal Id
Other01636255IL · Blue Cross Blue Shield Il

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. Walter Daniel Perez 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 Walter Perez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Access Community Health Network
0.5 mi
Federally Qualified Health Center (FQHC)
3700 W 26TH ST
Chicago, IL 60623
  • Reassigned Medicare billing, Illinois enrollment
  • 413 clinicians in this Medicare group
NPI 1194803213 (773) 542-5203
Cook County
0.6 mi
Primary Care
2424 S PULASKI RD
Chicago, IL 60623
  • Reassigned Medicare billing, Illinois enrollment
  • 1,047 clinicians in this Medicare group
NPI 1861512667 (773) 521-0750

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

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 9

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

JOSEFINA RAMOS LARDUET
Family Medicine
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (234) 225-4891
DR. EMILY RADNER GREENBERG D.M.D
Dentist (General Practice)
2859 S PULASKI RD, SECOND FLOOR
CHICAGO, IL 60623
Cook County (773) 522-0855
PEKKA JEAN SOINI M.D.
Obstetrics & Gynecology
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (773) 762-3333
JOSEFINA RAMOS LARDUET
Nurse Practitioner (Family)
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (815) 558-9094
DESAI PHARMACY INC
Pharmacy (Community/Retail Pharmacy)
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (773) 522-2900
FEDERICO J ALIAGA M.D.
Family Medicine
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (773) 762-3333
ALIAGA MEDICAL CENTER, SC
Family Medicine
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (773) 762-3333
REMARIE PRIMARY CARE
Family Medicine
2859 S PULASKI RD
CHICAGO, IL 60623
Cook County (815) 558-9094

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 Walter Perez's NPI number?

The NPI number for Walter Perez is 1558475996. It was assigned to this individual provider in the NPPES registry on August 19, 2006.

Where is Walter Perez located?

Walter Perez practices at 2859 S Pulaski Rd, Chicago, IL 60623. The listed phone number is (773) 762-3333.

What is Walter Perez's specialty?

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

Is Walter Perez enrolled in Medicare?

Yes. Walter Perez is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Walter Perez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Walter Perez reassigns Medicare benefits to 2 organizations: Access Community Health Network (Chicago, IL) and Cook County (Chicago, 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 Walter Perez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Walter Perez accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Walter Perez 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 Walter Perez was last updated on February 24, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.