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

Mary Gretchen O Connor, PT

Individual provider Geriatric Physical Therapist · NPI 1861941346

Mary Gretchen O Connor, PT is a Physical Therapist in Private Practice in Grayslake, Illinois. Qualified in 1987, 39 years ago. Practices with Grayslake Rehabilitation and Complete Physical Therapy LLC, a 13-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
39
Licensed in
IL
In the registry since
2016
What do these letters mean?
PT — Physical Therapist
A licensed therapist who treats movement, pain and injury.

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Practice location Address checks out

997 N Corporate Cir
Grayslake, IL 60030-7822
Phone: (847) 223-8001
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Physical Therapist (primary) Taxonomy 2251G0304X · Licence 070.019894 (IL)

Record details

NPI number1861941346
Entity typeIndividual (Type 1)
GenderFemale
Credentials PT
Sole proprietorNo
NPI enumeratedSeptember 26, 2016
Last updated in NPPESOctober 3, 2016

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 1987 (39 years in practice)
Group practice Grayslake Rehabilitation And Complete Physical Therapy Llc — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Grayslake