Internal Medicine - Nephrology Specialists in Thousand Oaks, CA
Browse 8 Internal Medicine - Nephrology providers listed in NPPES with a practice address in Thousand Oaks, California.
How Thousand Oaks compares with the U.S.
8 active clinicians in Internal Medicine - Nephrology list a practice address in Thousand Oaks, CA in the NPI registry.
With fewer than 10 clinicians, rates per 100,000 residents are not reliable enough to compare.
Too few clinicians in Internal Medicine - Nephrology in Thousand Oaks are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.
These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.
Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com · Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026.
Dr. Anthony Capparelli , MD
Internal Medicine - Nephrology
Dr. Paul Finkel , MD
Internal Medicine - Nephrology
Dr. Arian Gower , MD
Internal Medicine - Nephrology
Dr. Ramdas Nanda Kumar , MD
Internal Medicine - Nephrology
Dr. Richard Lessman , MD
Internal Medicine - Nephrology
Dr. Salah Sonbol , MD
Internal Medicine - Nephrology
Dr. Robert M Brenner , MD
Internal Medicine - Nephrology
Dr. Karen Vossen Smirnakis , MD
Internal Medicine - Nephrology
Frequently Asked Questions about Internal Medicine - Nephrology in Thousand Oaks
Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.
This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.
Other Specialties in Thousand Oaks
- Student in an Organized Health Care Education/Training Program 217
- Physical Therapist 107
- Pharmacist 71
- Chiropractor 56
- Dentist - General Practice 50
- Dentist 44
- Nurse Practitioner - Family 42
- Physician Assistant 40
- Occupational Therapist 29
- Psychologist - Clinical 27
- Specialist 25
- Physical Therapist - Orthopedic 23
Internal Medicine - Nephrology Specialists in Other California Cities
Cities with the most listed practitioners first.