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

Dennis W Regan, MD

Individual provider Internal Medicine Physician · NPI 1568510907

Dennis W Regan, MD is a Hospitalist in Rochester, Minnesota. Graduated from University of North Carolina at Chapel Hill School of Medicine in 1987, 39 years ago. Practices with Mayo Clinic, a 4,796-clinician group and accepts Medicare assignment. Licensed in Minnesota, Montana and Oregon.

Years since qualifying
39
Trained at
University of North Carolina at Chapel Hill School of Medicine
Licensed in
MN, MT, OR
In the registry since
2007
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 59227 (MN)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD157557 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 6978 (MT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 108111 (MN)

Record details

NPI number1568510907
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESFebruary 2, 2021
Certification dateFebruary 2, 2021

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduated 1987 (39 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Rochester