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

Dr. Isabella Rossi Riordan, MD

Individual provider Anesthesiology Physician · NPI 1245644525

Dr. Isabella Rossi Riordan, MD is an Anesthesiology in O Fallon, Missouri. Graduated from Loyola University of Chicago, Stritch School of Medicine in 2014, 12 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
12
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
MO
In the registry since
2014
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

2 Progress Point Pkwy Dept Anesthesiology
O Fallon, MO 63368-2205
Phone: (800) 862-9980
Fax: (314) 362-1185
Show map & directions

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

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 2016042732 (MO)

Record details

NPI number1245644525
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2014
Last updated in NPPESApril 17, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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