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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. STEPHEN L. SEAGREN M.D.
NPI 1386692424
Radiology - Radiation Oncology in La Jolla, CA

Active since May 04, 2006
3855 HEALTH SCIENCES DR. 0843, MOORES UCSD CANCER CENTER, LA JOLLA, CA 92093(585) 822-6040 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. Stephen L. Seagren M.d. NPPES

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

DR. STEPHEN L. SEAGREN M.D. (NPI 1386692424) is an individual radiation oncology provider in La Jolla, California, licensed in California (G 24159) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1386692424
Entity TypeIndividualMale
Primary Taxonomy2085R0001X
Provider Legal NameDR. STEPHEN L. SEAGRENCredential: M.D.
Location Address3855 HEALTH SCIENCES DR. 0843, MOORES UCSD CANCER CENTERLa Jolla, CA 92093-0843
Mailing Address5413 Avenida FiestaLa Jolla, CA 92037-7202 · (858) 822-6040
Phone(585) 822-6040
Sole ProprietorNo
Enumeration DateMay 4, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1386692424 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0001X
License✔ Licensed in CA · G 24159
Definition
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
3855 HEALTH SCIENCES DR. 0843, La Jolla, CA 92093
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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 Stephen Seagren's NPI number?

The NPI number for Stephen Seagren is 1386692424. It was assigned to this individual provider in the NPPES registry on May 4, 2006.

Where is Stephen Seagren located?

Stephen Seagren practices at 3855 Health Sciences Dr. 0843 Moores Ucsd Cancer Center, La Jolla, CA 92093. The listed phone number is (585) 822-6040.

What is Stephen Seagren's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

When was this NPI record last updated?

The NPPES record for Stephen Seagren 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 39 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.