Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin John Armstrong, CRNA

Certified Registered Nurse Anesthetist in Spencer, IA · enumerated 2010.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1174845564

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Benjamin John Armstrong

Credential CRNA

Sex Male

Practice address 1200 1st Ave E, Spencer, IA, 51301

Phone (712) 264-6165

Enumeration date Feb 25, 2010

Last updated in NPPES Apr 10, 2012

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 116492 (IA) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License 116492 (IA) Secondary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Benjamin Armstrong?

The National Provider Identifier (NPI) for Benjamin Armstrong is 1174845564, a Type 1 (individual) record in the CMS NPPES registry.

Where does Benjamin Armstrong practice?

The practice location on file with NPPES is in Spencer, IA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Midwest Radiology and Imaging PC Medical Specialty Clinic/Center · Spencer, IA NPI 1720081524 John Follows Orthopaedic Surgery Physician · Spencer, IA NPI 1508869413 Philip Deffer Orthopaedic Hand Surgery Physician · Spencer, IA NPI 1356344261 Katie Hesse Physical Therapist · Spencer, IA NPI 1487657250 Nwia Bone, Joint & Sports Surgeons, PC Orthopaedic Surgery Physician · Spencer, IA NPI 1760485528 Charles Crouch Diagnostic Radiology Physician · Spencer, IA NPI 1477556280 Stephen Frushour Orthopaedic Surgery of the Spine Physician · Spencer, IA NPI 1881687739 Lois Stillman Registered Dietitian · Spencer, IA NPI 1225024383

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-10.