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

Regan Nell Theiler, MD, PHD

Individual provider Obstetrics Physician · NPI 1609069558

Regan Nell Theiler, MD, PHD is an Obstetrics/Gynecology in Rochester, Minnesota. Qualified in 2001, 25 years ago. Practices with Mayo Clinic, a 4,796-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine, Minnesota, New Hampshire and Texas and 2 more.

Years since qualifying
25
Licensed in
ME, MN, NH, TX, VT, WI
In the registry since
2007
Specialties on file
6
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

200 1st St SW
Rochester, MN 55905-1000
Phone: (507) 284-2511
Show map & directions

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

Additional practice locations (1)

  • 1 Medical Center Dr Dept Ob, Lebanon, NH 03756-1000 — (603) 653-9302

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 62949 (MN)
Obstetrics Physician Taxonomy 207VX0000X · Licence M6911 (TX)
Obstetrics Physician Taxonomy 207VX0000X · Licence 15363 (NH)
Obstetrics Physician Taxonomy 207VX0000X · Licence 018899 (ME)
Obstetrics Physician Taxonomy 207VX0000X · Licence 042.0012264 (VT)
Obstetrics Physician Taxonomy 207VX0000X · Licence 73273 (WI)

Record details

NPI number1609069558
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedAugust 23, 2007
Last updated in NPPESNovember 2, 2021
Certification dateNovember 2, 2021

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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