Heather Marcordes, COTA/L
Heather Marcordes, COTA/L is an Occupational Therapy Assistant in Tinley Park, IL, registered under NPI 1003172669.
Getting there
Here is what surrounds this office in Tinley Park, based on OpenStreetMap data collected Sep 9, 2026. Parking is available about 0.38 mi away. The nearest transit stop is 0.20 mi away, served by Centennial Drive & Centennial Circle/Plymouth. If you arrive early, there is a coffee shop 0.47 mi away.
Getting here and what is nearby
Transit Centennial & Brementowne 34 ft ~1 min
Transit Centennial & Brementowne 71 ft ~1 min
Restaurant Chick-fil-A 640 ft ~3 min
Transit Centennial Drive & Centennial Circle/Plymouth 0.20 mi ~5 min
Grocery Pete's Market 0.23 mi ~5 min
Restaurant Steak 'n Shake 0.24 mi ~5 min
Grocery Amazon Fresh 0.26 mi ~6 min
16017 Harlem Avenue, Tinley Park 60477
Parking 0.30 mi ~6 min
Restaurant Chuck E. Cheese 0.30 mi ~6 min
Parking 0.38 mi ~8 min
Parking 0.38 mi ~8 min
Grocery Aldi 0.40 mi ~9 min
16000 Harlem Avenue, Tinley Park 60477
Mo-Su 08:30-20:00
Coffee Starbucks 0.47 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 057003544 | IL | Occupational Therapy Assistant primary |
This provider holds licence 057003544 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Occupational Therapy Assistant covers
An occupational therapy assistant is a person who has graduated from an occupational therapy assistant program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, has successfully completed a period of supervised fieldwork experience required by the accredited occupational therapy assistant program, has passed a nationally recognized entry-level examination for occupational therapy assistants, and fulfills state requirements for licensure, certification, or registration. An occupational therapy assistant provides interventions under the supervision of an occupational therapist which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapy assistants address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life. NUCC Health Care Provider Taxonomy, code 224Z00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003172669 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 9, 2012 |
| Last updated | Apr 9, 2012 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | COTA/L |
| Practice address |
7050 CENTENNIAL DR Tinley Park, IL 60477 (708) 614-1782 Fax (708) 429-5868 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 1 | 7 | 2 | 6 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 7 | 4 | 6 | 3 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.