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

Mary Patricia O'Day

Individual provider Maternal & Fetal Medicine Physician · NPI 1528174984

Mary Patricia O'Day is an Obstetrics/Gynecology in Duluth, Minnesota. Graduated from University of Miami, Lm Miller School of Medicine in 1990, 36 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
36
Trained at
University of Miami, Lm Miller School of Medicine
Licensed in
MN
In the registry since
2006

Practice location Address checks out

400 E 3rd St
Duluth, MN 55805-1951
Phone: (218) 786-3800
Show map & directions

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

Specialties & licences

Maternal & Fetal Medicine Physician (primary) Taxonomy 207VM0101X · Licence 48503 (MN)

Record details

NPI number1528174984
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedAugust 21, 2006
Last updated in NPPESDecember 17, 2021

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF MIAMI, LM MILLER SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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