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NATASHA DIAZ MD
NPI 1659300408
Family Medicine in Chicago, IL

Active since July 02, 2006PECOS EnrolledAccepts Medicare Assignment
5359 W FULLERTON AVE, CHICAGO, IL 60639(773) 836-2785(773) 836-7381 Get Directions Write a Review

NPPES record last updated: December 30, 2019. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Natasha Diaz Md NPPES

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

NATASHA DIAZ MD (NPI 1659300408) is an individual family medicine provider in Chicago, Illinois, licensed in Illinois (036-113339) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2001).

NPPES Registry Identity

NPI1659300408
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameNATASHA DIAZCredential: MD
Location Address5359 W FULLERTON AVEChicago, IL 60639-1450
Mailing Address5359 W Fullerton AveChicago, IL 60639-1450 · (773) 836-2785 · Fax (773) 836-7381
Phone(773) 836-2785
Fax(773) 836-7381
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2001
Enumeration DateJuly 2, 2006
Last NPPES UpdateDecember 30, 2019
✔ NPI 1659300408 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in IL · 036-113339
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
5359 W FULLERTON AVE, Chicago, IL 60639
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Other Identifiers 1

Medicaid036113339IL

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 and accepts Medicare assignment

Natasha Diaz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305812892
PECOS Enrollment IDI20050906000142
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 60639 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 20

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

KRISTEN MARIE MOSER M.D.
Family Medicine
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (773) 836-2785
LAURA A LICEA LCSW
Social Worker (Clinical)
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (708) 836-2785
RACHEL BRDICKA FNP
Nurse Practitioner (Family)
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (773) 836-2785
COURTNEY CLASSEN SMITH-MATTHEWS
Dietitian, Registered
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (773) 836-2785
YESENIA YEPEZ MD
Family Medicine
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (773) 836-2785
MAX ROLAND RUBEN MD
Family Medicine
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (773) 836-2785
DR. KESANET T GEBREKIDAN DDS
Dentist
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (773) 637-7053
GLADYS ESTRADA M.D.
Family Medicine
5359 W FULLERTON AVE
CHICAGO, IL 60639
Cook County (708) 763-2369

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 Natasha Diaz's NPI number?

The NPI number for Natasha Diaz is 1659300408. It was assigned to this individual provider in the NPPES registry on July 2, 2006.

Where is Natasha Diaz located?

Natasha Diaz practices at 5359 W Fullerton Ave, Chicago, IL 60639. The listed phone number is (773) 836-2785.

What is Natasha Diaz's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Natasha Diaz enrolled in Medicare?

Yes. Natasha Diaz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Natasha Diaz accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Natasha 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 Natasha Diaz was last updated on December 30, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.