Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mary Ellen R Dreher, APRN, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1851518690

Mary Ellen R Dreher, APRN, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Rochester, Minnesota. Qualified in 2007, 19 years ago. Practices with Olmsted Medical Center, a 325-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
19
Licensed in
MN
In the registry since
2007
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

1650 4th St SE
Rochester, MN 55904-4717
Phone: (507) 529-6600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 39 (MN)

Record details

NPI number1851518690
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN , CRNA
Sole proprietorNo
NPI enumeratedApril 20, 2007
Last updated in NPPESAugust 20, 2024
Certification dateAugust 20, 2024

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Olmsted Medical Center — 325 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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