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

MICHELLE DIAZ PTA
NPI 1902447469
Counselor - Professional in Chicago, IL

Active since October 04, 2019PECOS Enrolled
3309 N OCONTO AVE, CHICAGO, IL 60634(773) 895-0753 Get Directions Write a Review

NPPES record last updated: June 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 16, 2020, Oct 4, 2019 (2 updates tracked since 2019).

About Michelle Diaz Pta NPPES

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

MICHELLE DIAZ PTA (NPI 1902447469) is an individual professional provider in Chicago, Illinois, licensed in Illinois (180015525) and active in the NPI registry since October 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1902447469
Entity TypeIndividualFemale
Primary Taxonomy101YP2500X
Provider Legal NameMICHELLE DIAZCredential: PTA
Location Address3309 N OCONTO AVEChicago, IL 60634-3536
Mailing Address3309 N Oconto AveChicago, IL 60634-3536 · (773) 895-0753
Phone(773) 895-0753
Sole ProprietorNo
Medical School CMSOtherGraduated 2008
Enumeration DateOctober 4, 2019
Last NPPES UpdateJune 10, 20262 updates tracked since enumeration
NPPES CertifiedJune 10, 2026
✔ NPI 1902447469 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in IL · 180015525
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X
Also ListedPhysical Therapy AssistantTaxonomy 225200000X
3309 N OCONTO AVE, Chicago, IL 60634
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health, Quartz.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Michelle Diaz Pta is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3476996679
PECOS Enrollment IDI20240205002412
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

3

Medicare enrollment records show Michelle Diaz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Vitae Health Medical Illinois, PLLC
7.7 mi
Internal Medicine
3450 OAKTON ST
Skokie, IL 60076
  • Reassigned Medicare billing, Illinois enrollment
  • 491 clinicians in this Medicare group
NPI 1174013452 (224) 777-8034
Rockford Psychiatric Medical Services, S.C.
67 mi
Psychiatry
1639 N ALPINE RD STE 260
Rockford, IL 61107
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Rockford Psychiatric Medical Services Sc
  • 163 clinicians in this Medicare group
NPI 1821391442 (815) 395-1500
Sondermind PC
1,830 mi
Clinical
6203 SAN IGNACIO AVE STE 110
San Jose, CA 95119
  • Reassigned Medicare billing, Illinois enrollment
  • 106 clinicians in this Medicare group
NPI 1003646977 (844) 843-7279

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

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 Michelle Diaz's NPI number?

The NPI number for Michelle Diaz is 1902447469. It was assigned to this individual provider in the NPPES registry on October 4, 2019.

Where is Michelle Diaz located?

Michelle Diaz practices at 3309 N Oconto Ave, Chicago, IL 60634. The listed phone number is (773) 895-0753.

What is Michelle Diaz's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

Is Michelle Diaz enrolled in Medicare?

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

Which organizations bill Medicare for Michelle Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Diaz reassigns Medicare benefits to 3 organizations: Vitae Health Medical Illinois, PLLC (Skokie, IL), Rockford Psychiatric Medical Services, S.C. (Rockford, IL) and Sondermind PC (San Jose, CA). 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 Michelle Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michelle Diaz accept?

Health plans from Oscar Health and Quartz list Michelle 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 Michelle Diaz was last updated on June 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.