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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. TERENCE R OFFENBERGER MD
NPI 1023009586
Internal Medicine in Aliso Viejo, CA

Active since November 03, 2005
15 MAREBLU, STE. 100, ALISO VIEJO, CA 92656(949) 448-0656(949) 425-2465 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Terence R Offenberger Md NPPES

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

DR. TERENCE R OFFENBERGER MD (NPI 1023009586) is an individual internal medicine provider in Aliso Viejo, California, licensed in California (A64290) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1023009586
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. TERENCE R OFFENBERGERCredential: MD
Location Address15 MAREBLU, STE. 100Aliso Viejo, CA 92656-3015
Mailing Address2501 Pullman StSanta Ana, CA 92705-5511 · (949) 437-9063 · Fax (949) 437-9069
Phone(949) 448-0656
Fax(949) 425-2465
Sole ProprietorNo
Enumeration DateNovember 3, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1023009586 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 · A64290
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.
15 MAREBLU, Aliso Viejo, CA 92656
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Other Identifiers 1

Medicaid00A642900CA

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.

DR. DALJEET SINGH MD
Family Medicine
15 MAREBLU, 100
ALISO VIEJO, CA 92656
Orange County (949) 448-0656
ERNESTINA AVALOS-FIGUEROA DDS. APC
Dentist (General Practice)
15 MAREBLU, SUITE 360
ALISO VIEJO, CA 92656
Orange County (949) 831-5511
DR. CHARLES CHRISTOPHER BAILEY JR. M.D.
Internal Medicine (Infectious Disease)
15 MAREBLU, SUITE 310
ALISO VIEJO, CA 92656
Orange County (949) 448-8861
JUDITH ANN MILLER
Acupuncturist
15 MAREBLU, SUITE 310
ALISO VIEJO, CA 92656
Orange County (949) 215-6437
DR. MICHAEL MOSTOFI D.D.S.
Dentist (General Practice)
15 MAREBLU, STE 360
ALISO VIEJO, CA 92656
Orange County (949) 831-5511
DR. MELANIE M CHAN MD
Pediatrics
15 MAREBLU
ALISO VIEJO, CA 92656
Orange County (949) 448-0656
KAREN H FU MD, INC
Family Medicine
15 MAREBLU, SUITE 310
ALISO VIEJO, CA 92656
Orange County (949) 429-1213
BRISTOL PARK MEDICAL GROUP, INC
Family Medicine
15 MAREBLU, SUITE 100
ALISO VIEJO, CA 92656
Orange County (949) 448-0656

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 Terence Offenberger's NPI number?

The NPI number for Terence Offenberger is 1023009586. It was assigned to this individual provider in the NPPES registry on November 3, 2005.

Where is Terence Offenberger located?

Terence Offenberger practices at 15 Mareblu Ste. 100, Aliso Viejo, CA 92656. The listed phone number is (949) 448-0656.

What is Terence Offenberger'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 Terence Offenberger 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 28 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.