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

Heidi Underwood, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1497174593

Heidi Underwood, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Sioux Falls, South Dakota. Qualified in 2014, 12 years ago. Practices with Trinity Health, a 294-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in North Dakota and South Dakota.

Years since qualifying
12
Licensed in
ND, SD
In the registry since
2014
Specialties on file
2
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

1305 W 18th St
Sioux Falls, SD 57117-5074
Phone: (605) 328-6548
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2305 37th Ave Sw, Minot, ND 58701-7669 — (701) 857-5000

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence CR000839 (SD)
Certified Registered Nurse Anesthetist Taxonomy 367500000X · Licence R48418 (ND)

Record details

NPI number1497174593
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedApril 16, 2014
Last updated in NPPESSeptember 24, 2025
Certification dateSeptember 24, 2025

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Trinity Health — 294 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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