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

Dr. Deborah E Treacy, MD

Individual provider Emergency Medicine Physician · NPI 1558391524

Dr. Deborah E Treacy, MD is an Emergency Medicine in O Fallon, Illinois. Graduated from University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb) in 1992, 34 years ago. Practices with Cepamerica Illinois LLP, a 493-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
34
Trained at
University of Illinois College of Med (CHI/PEOR/ROCK/Chm-Urb)
Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

103 N Oak St
O Fallon, IL 62269-1165
Phone: (618) 624-3368
Fax: (618) 624-3387
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X (IL)

Record details

NPI number1558391524
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 4, 2006
Last updated in NPPESJuly 8, 2007
Mailing address103 N Oak St, O Fallon, IL 62269-1165

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Also practisesFAMILY PRACTICE
Medical schoolUNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)
Graduated 1992 (34 years in practice)
Group practice Cepamerica Illinois Llp — 493 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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