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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. Larry Froch, MD
Los Angeles, CA · $12 in drug and device payments (2025) · Telehealth · (310) 423-8661
Dr. Leon Rovner, M.D.
Los Angeles, CA · $1,221 in drug and device payments (2025) · Telehealth · (213) 748-1414
Dr. Leslie Dornfeld, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 825-0631
Dr. Lin Wang
Los Angeles, CA · $272 in drug and device payments (2025) · Telehealth · (213) 748-1414
Dr. Luani Lee, M.D.
Los Angeles, CA · $1,306 in drug and device payments (2025) · Telehealth · (213) 748-1414
Dr. Luon Peng, DO
Los Angeles, CA · $166 in drug and device payments (2025) · (323) 222-4848
Dr. Maha Al Baghdadi, MD
Los Angeles, CA · $14 in drug and device payments (2025) · (310) 206-6741
Dr. Mandana Rastegar, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 560-8949
Dr. Mansoor Azim, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (951) 961-8639
Dr. Marcelo Sampaio, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (107) 797-7203
Dr. Margarita Symonian Silver, M.D.
Los Angeles, CA · $307 in drug and device payments (2025) · (213) 413-2929
Dr. Mariam Nour Eldine
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 284-2912
Dr. Mark Song, MD, PHD
Los Angeles, CA · $2,614 in drug and device payments (2025) · Telehealth · (213) 736-1884
Dr. Mateo Ledezma, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. May Lwin, MD
Los Angeles, CA · $28 in drug and device payments (2025) · (323) 442-5100
Dr. Melvin Agatep, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (213) 368-9283
Dr. Michael Austerlitz, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 265-2917
Dr. Michael Blumenkrantz, M.D.
Los Angeles, CA · $228 in drug and device payments (2025) · (310) 289-9824
Dr. Michael Levine, M.D.,
Los Angeles, CA · $3,033 in drug and device payments (2025) · Telehealth · (310) 652-9162
Dr. Minhtri Nguyen, MD
Los Angeles, CA · $97 in drug and device payments (2025) · Telehealth · (310) 825-6309
Dr. Miroslaw Smogorzewski, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Mitra Nadim, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Mohamed El-shahawy, M.D.
Los Angeles, CA · $583 in drug and device payments (2025) · (323) 725-0051
Dr. Mohammad Akmal, M.D.
Los Angeles, CA · $226 in drug and device payments (2025) · (323) 226-7307
Dr. Mohammad Kamgar, M.D.
Los Angeles, CA · $81,624 in drug and device payments (2025) · Telehealth · (310) 206-8277
Dr. Neeraj Sharma, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Niloofar Nobakht, M.D,
Los Angeles, CA · $47,322 in drug and device payments (2025) · Telehealth · (310) 206-7662
Dr. Nima Sahami, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 423-8661
Dr. Nuha Ibrahim, MD
Los Angeles, CA · $406 in drug and device payments (2025) · Telehealth · (323) 442-5100
Dr. Pagiel Shechter, M.D.
Los Angeles, CA · $453 in drug and device payments (2025) · (310) 733-4171
Dr. Parvaneh Bahmani, M.D.
Los Angeles, CA · $2,170 in drug and device payments (2025) · Telehealth · (310) 385-9008
Dr. Patarapha Wongsaroj, M.D.
Los Angeles, CA · $17 in drug and device payments (2025) · (310) 423-8663
Dr. Payman Vahedifar, M.D
Los Angeles, CA · $2,132 in drug and device payments (2025) · Telehealth · (310) 659-1654
Dr. Peter Crooks, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Peter Lee, M.D.
Los Angeles, CA · $1,358 in drug and device payments (2025) · (213) 480-3380
Dr. Philip Hom, M.D.
Los Angeles, CA · $47 in drug and device payments (2025) · (310) 968-2753
Dr. Phuong-thu Pham, MD
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (310) 206-7662
Dr. Ramesh Manchanda, MD
Los Angeles, CA · $33 in drug and device payments (2025) · (323) 307-0810
Dr. Richard Horowitz, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 358-7200
Dr. Roland Lee, M.D.
Los Angeles, CA · $333 in drug and device payments (2025) · Telehealth · (323) 253-1082
Dr. Romela Petrosyan, M.D.
Los Angeles, CA · $272 in drug and device payments (2025) · Telehealth · (323) 442-1040
Dr. Ronald Nudelmar, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 312-2922
Dr. Roshan Rajani, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 442-5100
Dr. Ryszard Dudek, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Saeid Nosrati, M.D.
Los Angeles, CA · $29 in drug and device payments (2025) · (323) 442-5100
Dr. Santhi Voora
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Sapna Shah, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · Telehealth · (323) 442-5100
Dr. Scott Rasgon, MD
Los Angeles, CA · No drug or device payments recorded (2025) · (323) 783-4011
Dr. Sein Tun, DO
Los Angeles, CA · $18 in drug and device payments (2025) · (323) 442-1900
Dr. Seyed Farhad Chimeh, M.D.
Los Angeles, CA · No drug or device payments recorded (2025) · (310) 858-1800

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.