Heidi Underwood, CRNA
Certified Registered Nurse Anesthetist · Sioux Falls, SD
Heidi Underwood, CRNA is a certified registered nurse anesthetist with a practice address in Sioux Falls, South Dakota, and NPI 1497174593, issued on Apr 16, 2014. Check the license (South Dakota CR000839, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Heidi Underwood
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License numbers
- CR000839 SD
R48418 ND
Self-reported in NPPES; status is on the state search - Practice location
- 1305 W. 18TH Street, Sioux Falls, SD 57117
- Phone
- (605) 328-6548
- Enumerated
- Apr 16, 2014
- Record last updated
- Sep 24, 2025
- Medicare enrollment
- Enrolled (PECOS I20200124002198); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 533 in South Dakota → Look up another NPI →
Verify Heidi Underwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license CR000839Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Sioux Falls Specialty Hospital, LLPSioux Falls, SD
- Trinity HealthMinot, ND
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Heidi Underwood among 533 certified registered nurse anesthetist records in South Dakota
Heidi Underwood, CRNA is one of 533 certified registered nurse anesthetist records with a practice address in South Dakota. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 63% of them.
- NPI issued2014 · 63% of these records are older, 36% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2014 · median 2013 among the 372 with a school on file
- Record last updated2025 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
266 certified registered nurse anesthetist records list a practice address in Sioux Falls
They are 266 of the 6,563 NPPES records with a practice address in Sioux Falls, and 533 certified registered nurse anesthetist records in South Dakota.
All 533 in South Dakota → Every provider in Sioux Falls → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Clinton Bresee, CRNASioux Falls, SD 571171104367440
- Christopher Brusseau, CRNASioux Falls, SD 571171013302470
- Amy Mueller, CRNASioux Falls, SD 571171417376690
- Christopher Bartek, CRNASioux Falls, SD 571081023003852
- Karen Bordewyk, CRNASioux Falls, SD 571081538154372
- David Cinco, CRNASioux Falls, SD 571081205821048
- Darwin Gramstad, CRNASioux Falls, SD 571081063401081
- Richard Moss, CRNASioux Falls, SD 571081336135854
Common questions
What is Heidi Underwood, CRNA's NPI number?
Heidi Underwood, CRNA's National Provider Identifier (NPI) is 1497174593, issued on Apr 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Heidi Underwood, CRNA located?
The NPPES record lists a practice address at 1305 W. 18TH Street, Sioux Falls, SD, 57117. Phone: (605) 328-6548. Providers update this record themselves, so call before visiting.
How can I verify Heidi Underwood, CRNA's license?
NPPES lists South Dakota license number CR000839, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.