HealthcareDiscovery.AI / Doctors / California / Orange / Nephrology

Nephrology in Orange, California

Data updated monthly · Last refresh September 2026

33 Nephrology providers practice in Orange, and 67% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Nephrology providers in Orange

Listed alphabetically. 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. Amer Jabara, M.D.
Orange, CA · $22 in drug and device payments (2025) · Telehealth · (714) 639-4901
Dr. Andrew Ross, M.D.
Orange, CA · $2,551 in drug and device payments (2025) · Telehealth · (714) 456-5555
Dr. Anna Jin, M.D.
Orange, CA · $272 in drug and device payments (2025) · (714) 456-8888
Dr. Antoney Ferrey, M.D.
Orange, CA · $57 in drug and device payments (2025) · (714) 880-7812
Dr. Anum Hamiduzzaman, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8888
Dr. Charles Kaupke, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 639-4601
Dr. Cyril Barton, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Ekamol Tantisattamo, MD
Orange, CA · $2,685 in drug and device payments (2025) · Telehealth · (714) 456-7720
Dr. Fawaz Al Ammary, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7002
Dr. Hamid Moradi, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 456-5142
Dr. Henry Yuan, M.D.
Orange, CA · $170 in drug and device payments (2025) · Telehealth · (714) 771-8000
Dr. Jason Chou, M.D.
Orange, CA · No drug or device payments recorded (2025) · Telehealth · (714) 456-5142
Dr. Jiten Mehta, D0
Orange, CA · $409 in drug and device payments (2025) · Telehealth · (714) 836-4204
Dr. Jula Inrig, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 880-7812
Dr. Kamyar Kalantar-zadeh, M.D.
Orange, CA · $32,972 in drug and device payments (2025) · (714) 880-7812
Dr. Kevin Harley, M.D.
Orange, CA · $42 in drug and device payments (2025) · (714) 456-5142
Dr. Kevin Pham, M.D.
Orange, CA · $4,143 in drug and device payments (2025) · Telehealth · (714) 836-4204
Dr. Lawrence Nguyen, DO
Orange, CA · No drug or device payments recorded (2025) · (714) 456-7890
Dr. Linh Thong, M.D.
Orange, CA · No drug or device payments recorded (2025) · Telehealth · (714) 639-4901
Dr. Madeleine Pahl, MD
Orange, CA · $862 in drug and device payments (2025) · Telehealth · (714) 456-8978
Dr. Michael Neinast, DO
Orange, CA · $1,144 in drug and device payments (2025) · (714) 456-8888
Dr. Michael Rutten, M.D.
Orange, CA · No drug or device payments recorded (2025) · (714) 639-4901
Dr. Michael Yap, M.D.
Orange, CA · $14 in drug and device payments (2025) · (657) 231-2099
Dr. Nosratola Vaziri, MD
Orange, CA · No drug or device payments recorded (2025) · (714) 456-8978
Dr. Payal Mittal, M.D.
Orange, CA · $135 in drug and device payments (2025) · (714) 836-4204
Dr. Ramy Hanna, M.D.
Orange, CA · $80,048 in drug and device payments (2025) · Telehealth · (714) 880-7812
Dr. Rebecca Ahdoot, M.D.
Orange, CA · $12,059 in drug and device payments (2025) · Telehealth · (714) 880-7812
Dr. Shubham Dixit, DO
Orange, CA · $684 in drug and device payments (2025) · (714) 456-5413
Dr. Stephanie Cheung, MD
Orange, CA · $154 in drug and device payments (2025) · Telehealth · (714) 456-5142
Dr. Thu Le, M.D.
Orange, CA · $8,179 in drug and device payments (2025) · Telehealth · (714) 456-8888
Dr. Uttam Reddy, M.D.
Orange, CA · $300 in drug and device payments (2025) · (714) 456-7720
Dr. Yasir Qazi, M.D.
Orange, CA · $105,997 in drug and device payments (2025) · (714) 771-8000
Dr. Yongen Chang, MD, PHD
Orange, CA · $31,730 in drug and device payments (2025) · Telehealth · (714) 456-7004

Conditions Nephrology providers in Orange, 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 Orange, California?

There are 33 Nephrology providers with active NPI records practicing in Orange, according to federal NPPES data refreshed monthly.

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

22 of 33 (67%) 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 Orange treat?

Nephrology providers in Orange 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 records 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.

All specialties in Orange Nephrology across California

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.