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

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

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: August 16, 2026.

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.

JORDAN L LALONDE PA-C
Physician Assistant
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (510) 357-6500
ALAMEDA HEALTH SYSTEM
General Acute Care Hospital
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (510) 357-6500
ANTHONY MICHAEL MONTEFUSCO IV
Emergency Medicine
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (209) 342-2300
GAIL ANN HUBBELL
Emergency Medicine
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (209) 342-2300
ALAMEDA HEALTH SYSTEM
Rehabilitation Hospital
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (510) 895-7230
SARAH ARCHENBRONN FNP-BC
Nurse Practitioner (Family)
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (510) 357-6500
ADA WEI HSIN LIEN PA-C, MPH
Physician Assistant (Medical)
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (510) 667-4545
LINDSAY ELIZABETH ALLEN PA-C
Physician Assistant
13855 E 14TH ST
SAN LEANDRO, CA 94578
Alameda County (510) 357-6500

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 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.

Where is Ronald Olson located?

Ronald Olson practices at 13855 E 14th St, San Leandro, CA 94578. The listed phone number is (925) 296-7156.

What is Ronald Olson's specialty?

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

When was this NPI record last updated?

The NPPES record for Ronald 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 36 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.