Nathan Collin Froehner, CRNA
Certified Registered Nurse Anesthetist · Mason City, IA
Nathan Collin Froehner, CRNA is a certified registered nurse anesthetist with a practice address in Mason City, Iowa, and NPI 1699015164, issued on Feb 21, 2013. Check the license (Iowa 121445, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nathan Collin Froehner
- Credential
- CRNA
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License number
- 121445 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1000 4TH St SW, Mason City, IA 50401
- Phone
- (641) 428-7000
- Enumerated
- Feb 21, 2013
- Record last updated
- Feb 21, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130313000354); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 584 in Iowa → Look up another NPI →
Also registered at 1000 4TH St SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nathan Collin Froehner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 121445Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2 hospitals and group practices
- Waverly Health CenterWaverly, IA · Critical Access Hospitals5 of 5 stars
- North Iowa Mercy ClinicsMason City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nathan Collin Froehner among 584 certified registered nurse anesthetist records in Iowa
Nathan Collin Froehner, CRNA is one of 584 certified registered nurse anesthetist records with a practice address in Iowa. 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 2013, is newer than 60% of them.
- NPI issued2013 · 60% 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
- Graduated2012 · median 2014 among the 406 with a school on file
- Record last updated2013 · 55% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 certified registered nurse anesthetist records list a practice address in Mason City
They are 16 of the 866 NPPES records with a practice address in Mason City, and 584 certified registered nurse anesthetist records in Iowa.
All 584 in Iowa → Every provider in Mason City → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Diane Berkey, CRNAMason City, IA 504011881676534
- Jennifer Cooley, CRNAMason City, IA 504011700272036
- Donna Fitzgerald, CRNAMason City, IA 504011851338867
- John Fitzgerald, CRNAMason City, IA 504011902843980
- Robert Froehner, CRNAMason City, IA 504011033162920
- Craig Heit, CRNAMason City, IA 504011912973132
- Talon Jones, CRNAMason City, IA 504011720463763
- Jennifer Kuntz, CRNA DNPMason City, IA 504011043550817
Common questions
What is Nathan Collin Froehner, CRNA's NPI number?
Nathan Collin Froehner, CRNA's National Provider Identifier (NPI) is 1699015164, issued on Feb 21, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Collin Froehner, CRNA located?
The NPPES record lists a practice address at 1000 4TH St SW, Mason City, IA, 50401. Phone: (641) 428-7000. Providers update this record themselves, so call before visiting.
How can I verify Nathan Collin Froehner, CRNA's license?
NPPES lists Iowa license number 121445, as entered by the provider. Search the Iowa 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.