Active NPI
Robert M Brenner, M.D.
- Nephrology Physician
- Thousand Oaks, CA
National Provider Identifier
1861431397
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nephrology Physician
- License
- 151076
- Practice address
- 1 Amgen Center Dr
27-5-C
Thousand Oaks, CA 91320-1730 - Phone
- (805) 447-5939
- NPI assigned
- Jun 6, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Nephrology Physician | 207RN0300X | 151076 | MA | Primary |
Addresses
Primary practice location
1 Amgen Center Dr
27-5-C
Thousand Oaks, CA 91320-1730
Mailing address
26507 Mont Calabasas Dr
Calabasas, CA 91302-3850
Phone (805) 447-5939
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 151076 | MA | MD | Nephrology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1149552000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1861431397",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "26507 MONT CALABASAS DR",
"city": "CALABASAS",
"state": "CA",
"postal_code": "913023850",
"telephone_number": "805-447-5939"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1 AMGEN CENTER DR",
"address_2": "27-5-C",
"city": "THOUSAND OAKS",
"state": "CA",
"postal_code": "913201730",
"telephone_number": "805-447-5939"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BRENNER",
"first_name": "ROBERT",
"middle_name": "M",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-06-06",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207RN0300X",
"taxonomy_group": "",
"desc": "Internal Medicine, Nephrology",
"state": "MA",
"license": "151076",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Thousand Oaks, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.