Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ROBERT D. FROEHNER CRNA
NPI 1033162920
Nurse Anesthetist, Certified Registered in Mason City, IA

Q: What is Robert Froehner's NPI number?

The NPI number for Robert Froehner is 1033162920. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Q: What is Robert Froehner's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Q: When was this NPI record last updated?

The NPPES record for Robert Froehner was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 19, 2006

1000 4TH ST SW, MASON CITY, IA 50401(641) 422-7000 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Robert D. Froehner Crna NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROBERT D. FROEHNER CRNA (NPI 1033162920) is an individual nurse anesthetist, certified registered in Mason City, Iowa, licensed in Iowa (61683) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1033162920

Entity TypeIndividualMale

Primary Taxonomy367500000X

Provider Legal NameROBERT D. FROEHNERCredential: CRNA

Location Address1000 4TH ST SWMason City, IA 50401-2800

Mailing Address1410 6th St SwMason City, IA 50401-4818 · (641) 424-6701 · Fax (641) 424-6709

Phone(641) 422-7000

Sole ProprietorNo

Enumeration DateMay 19, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1033162920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367500000X

License✔ Licensed in IA · 61683

Definition

(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.

1000 4TH ST SW, Mason City, IA 50401

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Other Identifiers 2

Medicaid3067215IA

Other35103IA · Blue Cross

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LINDA S VOLD LISW

Social Worker (Clinical)

1000 4TH ST SW, SUITE BS
MASON CITY, IA 50401

Cerro Gordo County (641) 422-7797

BURT HUMBURG MD

Internal Medicine

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7000

SUMATHY NAGRAJ IYENGAR M.D.,

Hospitalist

1000 4TH ST SW, MERCY MEDICAL CENTER-HOSPITALIST DEPT
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7000

DR. SATINDERJIT SINGH M.D.

Emergency Medicine

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7234

ASHLEY MATERN ARNP

Nurse Practitioner (Family)

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-6999

DR. THOMAS P DELANEY MD

Hospitalist

1000 4TH ST SW, SUITE HOSP
MASON CITY, IA 50401

Cerro Gordo County (641) 422-7000

NORTH IOWA MERCY CLINICS

Nurse Practitioner

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-5932

DR. MAHAD RAYALE MD

Hospitalist

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robert Froehner's NPI number?

The NPI number for Robert Froehner is 1033162920. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Where is Robert Froehner located?

Robert Froehner practices at 1000 4th St SW, Mason City, IA 50401. The listed phone number is (641) 422-7000.

What is Robert Froehner's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

When was this NPI record last updated?

The NPPES record for Robert Froehner was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.