Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. RONALD OLSON M.D.
NPI 1003850082
Radiology - Diagnostic Radiology in San Leandro, CA

Q: What is Ronald Olson's NPI number?

The NPI number for Ronald Olson is 1003850082. It was assigned to this individual provider in the NPPES registry on June 16, 2006.

Q: What is Ronald Olson's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Ronald Olson was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since June 16, 2006

13855 E 14TH ST, SAN LEANDRO, CA 94578(925) 296-7156(925) 296-7174 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

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About Dr. Ronald Olson M.d. NPPES

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

DR. RONALD OLSON M.D. (NPI 1003850082) is an individual diagnostic radiology provider in San Leandro, California, licensed in California (G25998) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1003850082

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameDR. RONALD OLSONCredential: M.D.

Location Address13855 E 14TH STSan Leandro, CA 94578-2611

Mailing Address175 Lennon Ln, Suite 100Walnut Creek, CA 94598-2485 · (925) 296-7156 · Fax (925) 296-7174

Phone(925) 296-7156

Fax(925) 296-7174

Sole ProprietorNo

Enumeration DateJune 16, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1003850082 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in CA · G25998

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

13855 E 14TH ST, San Leandro, CA 94578

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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.

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