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

DR. RANDALL J. OLSON D.D.S.
NPI 1245229020
Dentist - General Practice in Decorah, IA

Q: What is Randall Olson's NPI number?

The NPI number for Randall Olson is 1245229020. It was assigned to this individual provider in the NPPES registry on October 14, 2005.

Q: What is Randall Olson's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for Randall Olson 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 37 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 October 14, 2005

511 W WATER ST, SUITE C, DECORAH, IA 52101(563) 382-4302 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Randall J. Olson D.d.s. NPPES

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

DR. RANDALL J. OLSON D.D.S. (NPI 1245229020) is an individual general practice provider in Decorah, Iowa, licensed in Iowa (7652) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1245229020

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. RANDALL J. OLSONCredential: D.D.S.

Location Address511 W WATER ST, SUITE CDecorah, IA 52101-1776

Mailing Address511 W Water St, Suite CDecorah, IA 52101-1776 · (563) 382-4302

Phone(563) 382-4302

Sole ProprietorNo

Enumeration DateOctober 14, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1245229020 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in IA · 7652

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

511 W WATER ST, Decorah, IA 52101

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

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 Randall Olson's NPI number?

The NPI number for Randall Olson is 1245229020. It was assigned to this individual provider in the NPPES registry on October 14, 2005.

Where is Randall Olson located?

Randall Olson practices at 511 W Water St Suite C, Decorah, IA 52101. The listed phone number is (563) 382-4302.

What is Randall Olson's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

What insurance does Randall Olson accept?

Health plans from Ambetter from Arizona Complete Health, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and HRI Dental & Vision and 4 other insurers list Randall Olson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Randall Olson 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 37 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.