1. Home
  2. Directory
  3. California
  4. Thousand Oaks
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ROBERT M BRENNER M.D.
NPI 1861431397
Internal Medicine - Nephrology in Thousand Oaks, CA

Active since June 06, 2006
1 AMGEN CENTER DR, 27-5-C, THOUSAND OAKS, CA 91320(805) 447-5939 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Robert M Brenner M.d. NPPES

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

ROBERT M BRENNER M.D. (NPI 1861431397) is an individual nephrology provider in Thousand Oaks, California, licensed in Massachusetts (151076) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1861431397
Entity TypeIndividualMale
Primary Taxonomy207RN0300X
Provider Legal NameROBERT M BRENNERCredential: M.D.
Location Address1 AMGEN CENTER DR, 27-5-CThousand Oaks, CA 91320-1730
Mailing Address26507 Mont Calabasas DrCalabasas, CA 91302-3850 · (805) 447-5939
Phone(805) 447-5939
Sole ProprietorNo
Enumeration DateJune 6, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1861431397 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
License✔ Licensed in MA · 151076
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
1 AMGEN CENTER DR, Thousand Oaks, CA 91320
Open in Google Maps ↗

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LEANDRO GRIMALDI MD, MPH, EMBA
Specialist
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-1000
MICHAEL S VINCENT M.D., PH.D.
Internal Medicine (Rheumatology)
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-9481
DEBORAH PALASKI RNP
Nurse Practitioner (Family)
1 AMGEN CENTER DR, OCCUPATIONAL HEALTH, BLDG. 10
THOUSAND OAKS, CA 91320
Ventura County (805) 447-8899
DR. THEODORE E OKERSON II M.D.
Internal Medicine
1 AMGEN CENTER DR, MS 38/3B
THOUSAND OAKS, CA 91320
Ventura County (805) 447-9105
DR. JOSHUA JUDAH OFMAN M.D.
Specialist
1 AMGEN CENTER DR, MAILSTOP 27-2-C
THOUSAND OAKS, CA 91320
Ventura County (805) 447-0787
STEVEN KENNETH GALSON MD, MPH
Preventive Medicine (Public Health & General Preventive Medicine)
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-4988
DR. JEFFREY WIEZOREK
Internal Medicine (Medical Oncology)
1 AMGEN CENTER DR, MS 38-2-A
THOUSAND OAKS, CA 91320
Ventura County (805) 447-5707
NILOUFER CAINGLIT RN, NP
Nurse Practitioner
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-3584

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 Robert Brenner's NPI number?

The NPI number for Robert Brenner is 1861431397. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is Robert Brenner located?

Robert Brenner practices at 1 Amgen Center Dr 27-5-C, Thousand Oaks, CA 91320. The listed phone number is (805) 447-5939.

What is Robert Brenner's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

When was this NPI record last updated?

The NPPES record for Robert Brenner 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 24 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.