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LEONARD MARK OKUN MD
NPI 1205941010
Internal Medicine in San Diego, CA

Active since August 20, 2006
5575 RUFFLIN ROAD, SUITE 100, SAN DIEGO, CA 92123(858) 565-1300(858) 565-6932 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Leonard Mark Okun Md NPPES

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

LEONARD MARK OKUN MD (NPI 1205941010) is an individual internal medicine provider in San Diego, California, licensed in California (G21981) and active in the NPI registry since August 2006.

NPPES Registry Identity

NPI1205941010
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameLEONARD MARK OKUNCredential: MD
Location Address5575 RUFFLIN ROAD, SUITE 100San Diego, CA 92123
Mailing Address828 Neptune AvenueEncinitas, CA 92024 · (760) 436-4000 · Fax (760) 436-2471
Phone(858) 565-1300
Fax(858) 565-6932
Sole ProprietorNo
Enumeration DateAugust 20, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1205941010 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · G21981
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5575 RUFFLIN ROAD, San Diego, CA 92123
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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 Leonard Okun's NPI number?

The NPI number for Leonard Okun is 1205941010. It was assigned to this individual provider in the NPPES registry on August 20, 2006.

Where is Leonard Okun located?

Leonard Okun practices at 5575 Rufflin Road Suite 100, San Diego, CA 92123. The listed phone number is (858) 565-1300.

What is Leonard Okun's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Leonard Okun was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.