Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Tiffany Markelz, LCSW, CADC

Individual provider Clinical Social Worker · NPI 1508355215

Tiffany Markelz, LCSW, CADC is a Clinical Social Worker in St Charles, Illinois. Qualified in 2016, 10 years ago. Practices with Centennial Counseling Center, PC, a 26-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
10
Licensed in
IL
In the registry since
2018
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.
CADC — Certified Alcohol and Drug Counselor
A certified addiction counsellor.

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Practice location Address checks out

1120 E Main St Ste 201
St Charles, IL 60174-2287
Phone: (630) 377-6613
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 149020450 (IL)

Record details

NPI number1508355215
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW , CADC
Sole proprietorNo
NPI enumeratedMay 8, 2018
Last updated in NPPESMay 17, 2023
Certification dateMay 17, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Centennial Counseling Center, Pc — 26 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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