HealthcareDiscovery.AI / Doctors / California / Nephrology

Nephrologists in California

Data updated monthly · Last refresh October 2026

1,476 Nephrology providers practice in California, including 665 (45%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

1,476providers
665telehealth
Los Angelestop city

Nephrology by city in California

Choose a city to see providers there.

Nephrology in Los Angeles153 providers
Nephrology in San Diego75 providers
Nephrology in San Francisco71 providers
Nephrology in Sacramento59 providers
Nephrology in Stanford39 providers
Nephrology in Fresno37 providers
Nephrology in Torrance36 providers
Nephrology in Orange33 providers
Nephrology in San Jose32 providers
Nephrology in Berkeley24 providers
Nephrology in Loma Linda23 providers
Nephrology in Fountain Valley20 providers
Nephrology in Riverside18 providers
Nephrology in Long Beach17 providers
Nephrology in Bakersfield17 providers
Nephrology in Stockton16 providers
Nephrology in Modesto16 providers
Nephrology in La Jolla15 providers
Nephrology in Palo Alto15 providers
Nephrology in Montebello14 providers
Nephrology in Oakland13 providers
Nephrology in Roseville13 providers
Nephrology in Beverly Hills13 providers
Nephrology in Pasadena13 providers

Nephrology providers in California

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. William Golgert, M.D.
Santa Barbara, CA · $891 in drug and device payments (2025) · Telehealth · (805) 681-1761
Dr. Ajit Mahapatra, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Jennifer Kumar, M.D.
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-1000
Dr. Jia Wei Tan, MD
Santa Clara, CA · No drug or device payments recorded (2025) · (408) 851-4600
Dr. Sami Mazbar, MD
Santa Clara, CA · $250 in drug and device payments (2025) · (408) 851-1000
Dr. Ramya Malchira, MD.
Santa Clarita, CA · $407 in drug and device payments (2025) · Telehealth · (661) 753-5464
Dr. Gurbir Singh, MD
Santa Cruz, CA · $295 in drug and device payments (2025) · Telehealth · (831) 476-1551
Dr. Maritina Rodriguez, M.D.
Santa Cruz, CA · $204 in drug and device payments (2025) · Telehealth · (831) 476-1551
Dr. Prachi Jog, M.D., M.S
Santa Cruz, CA · $125 in drug and device payments (2025) · Telehealth · (831) 458-5597
Dr. Shraddha Rana, M.D
Santa Cruz, CA · $260 in drug and device payments (2025) · Telehealth · (831) 458-5597
Dr. Surinder Kumar, M.D., FACP,FASN,CCD
Santa Cruz, CA · No drug or device payments recorded (2025) · (831) 476-1551
Dr. William Raffo, M.D.
Santa Cruz, CA · $314 in drug and device payments (2025) · Telehealth · (831) 458-5597
Dr. Arashdeep Poonia, M.D.
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 287-9711
Dr. Hatem Mezher
Santa Maria, CA · No drug or device payments recorded (2025) · Telehealth · (718) 613-4000
Dr. James Jones, M.D.
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 739-3561
Dr. Muthiyaliah Babu, M.D.
Santa Maria, CA · No drug or device payments recorded (2025) · (805) 349-0198
Dr. Connie Rhee, M.D.
Santa Monica, CA · $3,885 in drug and device payments (2025) · Telehealth · (310) 481-4228
Dr. Earl Gordon, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 453-4599
Dr. Fawad Zafar-khan, MD
Santa Monica, CA · $601 in drug and device payments (2025) · (310) 829-0906
Dr. Frederick Karubian, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (818) 817-9832
Dr. Morris Grabie, MD
Santa Monica, CA · No drug or device payments recorded (2025) · (310) 829-3639
Dr. Nasimeh Yazdani, M.D.
Santa Monica, CA · $320 in drug and device payments (2025) · Telehealth · (310) 393-5000
Dr. Ramon Durazo, MD
Santa Monica, CA · $412 in drug and device payments (2025) · Telehealth · (310) 481-4228
Dr. Reza Khorsan, M.D.
Santa Monica, CA · $6,192 in drug and device payments (2025) · Telehealth · (310) 319-4371
Dr. Ying Hui Luu, M.D.
Santa Monica, CA · No drug or device payments recorded (2025) · Telehealth · (310) 899-7633
Dr. Saumil Gandhi, M.D.
Santa Paula, CA · $112 in drug and device payments (2025) · Telehealth · (805) 525-4650
Dr. Benjamin Fritz, M.D.
Santa Rosa, CA · No drug or device payments recorded (2025) · (707) 526-2027
Dr. Carl Wilson, MD
Santa Rosa, CA · No drug or device payments recorded (2025) · (707) 527-9510
Dr. Eric Cheung, M.D.
Santa Rosa, CA · $153 in drug and device payments (2025) · (707) 526-2027
Dr. George Kavalam, MBBS
Santa Rosa, CA · $9 in drug and device payments (2025) · (707) 526-2027
Dr. Jean Claude Bassila, M.D.
Santa Rosa, CA · $33 in drug and device payments (2025) · Telehealth · (707) 527-9510
Dr. Jill Edison, MD
Santa Rosa, CA · No drug or device payments recorded (2025) · (707) 527-9510
Dr. Lorigail Echipare, D.O
Santa Rosa, CA · $805 in drug and device payments (2025) · Telehealth · (707) 526-2027
Dr. Sandra Barrow, M.D.
Santa Rosa, CA · $43 in drug and device payments (2025) · (707) 526-2027
Dr. Sanjay Menon, MD
Santa Rosa, CA · $37 in drug and device payments (2025) · (707) 526-2027
Dr. Shweta Patel, M.D.
Santa Rosa, CA · No drug or device payments recorded (2025) · Telehealth · (707) 393-4194
Dr. Jie Shi Yan, M.D.
Simi Valley, CA · $27 in drug and device payments (2025) · (805) 584-0177
Dr. Ushakant Thakkar, M.D.
Simi Valley, CA · No drug or device payments recorded (2025) · (805) 584-0177
Dr. Malvin Yan, D.O.
South Gate, CA · $1,223 in drug and device payments (2025) · (310) 886-0869
Dr. Wen-yuan Chiang, D.O.
South Gate, CA · $511 in drug and device payments (2025) · (310) 631-3502
Dr. Anthony Thu, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Katherine Rausa, M.D.
South San Francisco, CA · $71 in drug and device payments (2025) · Telehealth · (650) 742-2000
Dr. Lucille Mercado, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Sharon Inokuchi, MD
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Vasantha Jotwani, M.D.
South San Francisco, CA · No drug or device payments recorded (2025) · (650) 742-2000
Dr. Adetokunbo Odunaiya, MD
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 723-4000
Dr. Aileen Wang, MD
Stanford, CA · $581 in drug and device payments (2025) · Telehealth · (650) 723-4000
Dr. Alan Pao, MD
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 498-5710
Dr. Ashley Martinez, MD
Stanford, CA · No drug or device payments recorded (2025) · Telehealth · (650) 723-4000
Dr. Belal Hakim, M.D.
Stanford, CA · No drug or device payments recorded (2025) · (650) 723-4000

Conditions Nephrology providers in California commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Nephrology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Nephrology providers are in California?

There are 1,476 Nephrology providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Nephrology providers in California offer telehealth?

Yes. 665 of the 1,476 Nephrology providers in California (about 45%) report offering telehealth services in CMS data.

Which cities in California have the most Nephrology providers?

Los Angeles (153), San Diego (75), San Francisco (71) have the highest concentration of Nephrology providers in California.

How many Nephrology providers in California received drug or device company payments?

885 of 1,476 Nephrology providers in California (60%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Nephrology providers in California treat?

Nephrology providers commonly treat chronic kidney disease, kidney stones, dialysis care, high blood pressure and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Nephrologists in California work in independent practices or large health systems?

Among 1,107 Nephrologists in California enrolled in Medicare, 30% bill through a solo or small practice with fewer than 10 clinicians, 21% through a mid-size group of 10 to 99, and 49% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Nephrologists in California work at?

According to CMS facility affiliation records, the California hospitals where the most Nephrologists hold privileges are Uci Health-Orange in Orange; Cedars-Sinai Medical Center in Los Angeles; Stanford Health Care in Stanford.

Nephrology in all 50 states Search all 1,476 in the directory Ask Zach for help choosing

Related

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Nephrology in California? Get featured.