Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Mark Retz

Individual provider Registered Nurse · NPI 1013275502

Mark Retz is registered under Certified Registered Nurse Anesthetist (CRNA) in Saint Paul, Minnesota. Qualified in 2012, 14 years ago. Practices with Regions Hospital, a 219-clinician group and accepts Medicare assignment. Licensed in Minnesota.

Years since qualifying
14
Licensed in
MN
In the registry since
2012
Specialties on file
2
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Practice location Address checks out

435 Phalen Blvd
Saint Paul, MN 55130-5302
Phone: (651) 254-7400
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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 772 (MN)
Registered Nurse Taxonomy 163W00000X · Licence 1830871 (MN)

Record details

NPI number1013275502
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMay 2, 2012
Last updated in NPPESSeptember 16, 2026
Certification dateSeptember 16, 2026

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Regions Hospital — 219 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients27
Services billed 27 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Regions Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 219 clinicians in the practice; 12 are shown here.

Other providers in Saint Paul