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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ARGELIA MORALES DIAZ
NPI 1356213953
Dietitian, Registered in Hazel Crest, IL

Active since September 22, 2025Accepts Medicare Assignment
3330 W 177TH ST STE 1A, HAZEL CREST, IL 60429(708) 799-1100 Get Directions Write a Review

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

Record update history: Sep 18, 2026, Jul 30, 2026 (2 updates tracked since 2026).

About Argelia Morales Diaz NPPES

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

ARGELIA MORALES DIAZ (NPI 1356213953) is an individual dietitian, registered in Hazel Crest, Illinois, licensed in Illinois (164022636) and active in the NPI registry since September 2025. She maintains a secondary practice location in Schaumburg and is a graduate of Other (2025).

NPPES Registry Identity

NPI1356213953
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameARGELIA MORALES DIAZ
Location Address3330 W 177TH ST STE 1AHazel Crest, IL 60429-2185
Mailing Address29373 Network PlChicago, IL 60673-1293 · (847) 390-5900
Phone(708) 799-1100
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateSeptember 22, 2025
Last NPPES UpdateSeptember 18, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 18, 2026
✔ NPI 1356213953 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in IL · 164022636
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
Also ListedDietitian, Registered · Nutrition, Obesity and Weight ManagementTaxonomy 133VN1201X · License 164022636 (IL)
3330 W 177TH ST STE 1A, Hazel Crest, IL 60429
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Secondary Practice Location 1

Location 1530 Palace CtSchaumburg, IL 60194-2554 · Phone (708) 799-1100

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Argelia Morales Diaz 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 ID9638637606
PECOS Enrollment IDI20260819004590

Medicare Billing Reassignment

Medicare enrollment records show Argelia Morales Diaz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Advocate Health & Hospitals Corporation
11 mi
Medical Specialty
4440 W 95TH ST
Oak Lawn, IL 60453
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Advocate Health And Hospitals Corporation
  • 4,870 clinicians in this Medicare group
NPI 1912936014 (847) 390-5900

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 60429 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
$0.00 typical visit price
range $60.08 – $183.39
Typical copayment $0.00 (range $15.02 – $45.84)
Most-billed visit code NA
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 5

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

NATALIE ANN NOONAN
Physician Assistant (Surgical)
3330 W 177TH ST STE 1A
HAZEL CREST, IL 60429
Cook County (708) 799-1100
DR. JYOTHSNA PALLA M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
3330 W 177TH ST STE 1A
HAZEL CREST, IL 60429
Cook County (708) 799-1100
DR. NADER M BESHAY MD
Internal Medicine
3330 W 177TH ST STE 1A
HAZEL CREST, IL 60429
Cook County (708) 799-1100
STACEY HOGROE
Nurse Practitioner (Family)
3330 W 177TH ST STE 1A
HAZEL CREST, IL 60429
Cook County (708) 799-1100
LINDA HEMAH ODURO
Nurse Practitioner (Primary Care)
3330 W 177TH ST STE 1A
HAZEL CREST, IL 60429
Cook County (708) 799-1100

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 Argelia Morales Diaz's NPI number?

The NPI number for Argelia Morales Diaz is 1356213953. It was assigned to this individual provider in the NPPES registry on September 22, 2025.

Where is Argelia Morales Diaz located?

Argelia Morales Diaz practices at 3330 W 177th St Ste 1A, Hazel Crest, IL 60429. The listed phone number is (708) 799-1100.

What is Argelia Morales Diaz's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Argelia Morales Diaz enrolled in Medicare?

Yes. Argelia Morales 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.

Which organization bills Medicare for Argelia Morales Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Argelia Morales Diaz reassigns Medicare benefits to Advocate Health & Hospitals Corporation (Oak Lawn, IL). The 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 Argelia Morales Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Argelia Morales Diaz was last updated on September 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.