Critical Care Doctors (Internal Medicine) in California
Data updated monthly · Last refresh October 2026
730 Critical Care Medicine (Internal Medicine) providers practice in California, including 165 (23%) offering telehealth. The largest concentration is in San Diego. 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.
730providers
165telehealth
San Diegotop city
Critical Care Medicine (Internal Medicine) by city in California
Choose a city to see providers there.
Critical Care Medicine (Internal Medicine) 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. George Lum, MDWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Gregory Anderson, MDWalnut Creek, CA · $20 in drug and device payments (2025) ·
(925) 295-4000 Dr. Hsiu-wei Lin, MDWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Kelvin Shiu, D.O.Walnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Kristina Kramer, M.D.Walnut Creek, CA · $1,407 in drug and device payments (2025) · Telehealth ·
(925) 932-6330 Dr. Kuruganti Reddy, MDWalnut Creek, CA · No drug or device payments recorded (2025) · Telehealth ·
(925) 295-4000 Dr. Martin Mazar, MDWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4000 Dr. Michael Cohen, M.D.Walnut Creek, CA · $133 in drug and device payments (2025) ·
(925) 944-0166 Dr. Moussa Yazbeck, M.D.Walnut Creek, CA · No drug or device payments recorded (2025) · Telehealth ·
(925) 937-0404 Dr. Nader Kamangar, MDWalnut Creek, CA · $833 in drug and device payments (2025) ·
(925) 939-3050 Dr. Ramin Khashayar, MDWalnut Creek, CA · $1,482 in drug and device payments (2025) · Telehealth ·
(925) 939-3050 Dr. Sai Praveen Haranath, MBBSWalnut Creek, CA · No drug or device payments recorded (2025) ·
(925) 295-4050 Dr. Bahar Mjos, DOWest Hollywood, CA · $1,100 in drug and device payments (2025) ·
(310) 423-5841 Dr. Claude Killu, MDWest Hollywood, CA · $37 in drug and device payments (2025) ·
(310) 423-6325 Dr. David Palestrant, M.D.West Hollywood, CA · $100 in drug and device payments (2025) ·
(323) 319-6992 Dr. Lucresia Montes, M.D.West Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 925-8449 Dr. Matthew MendozaWest Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 423-1838 Dr. Mehrnaz Hadian, MD, MSWest Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 894-9894 Dr. Meshe Chonde, M.D.West Hollywood, CA · $1,075 in drug and device payments (2025) ·
(310) 248-7369 Dr. Nancy Allen, PHD, MD (5/2016)West Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 423-4685 Dr. Natalie Achamallah, M.D.West Hollywood, CA · $1,287 in drug and device payments (2025) · Telehealth ·
(310) 423-1838 Dr. Rose Jumah, MDWest Hollywood, CA · No drug or device payments recorded (2025) ·
(310) 248-7369 Dr. Hussein Nassr, MDWhittie, CA · No drug or device payments recorded (2025) ·
(562) 789-5470 Dr. Alfredo Castellanos, M.D.Whittier, CA · $2,057 in drug and device payments (2025) · Telehealth ·
(562) 789-5470 Dr. Daniel Akhavan, MDWhittier, CA · $116 in drug and device payments (2025) ·
(562) 789-5470 Dr. Kiumars Saketkhoo, MDWhittier, CA · No drug or device payments recorded (2025) ·
(562) 789-5470 Dr. Maryam Zamanian, MDWhittier, CA · $128 in drug and device payments (2025) ·
(562) 789-5470 Dr. Nadeem Chishti, M.D.Whittier, CA · No drug or device payments recorded (2025) ·
(562) 789-5470 Dr. Albert Lim, MDWoodland Hills, CA · No drug or device payments recorded (2025) ·
(818) 719-2000 Dr. Arian Torbati, MDWoodland Hills, CA · No drug or device payments recorded (2025) · Telehealth ·
(818) 719-2000 Common questions
How many Critical Care Medicine (Internal Medicine) providers are in California?There are 730 Critical Care Medicine (Internal Medicine) providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Critical Care Medicine (Internal Medicine) providers in California offer telehealth?Yes. 165 of the 730 Critical Care Medicine (Internal Medicine) providers in California (about 23%) report offering telehealth services in CMS data.
Which cities in California have the most Critical Care Medicine (Internal Medicine) providers?San Diego (55), Sacramento (54), Los Angeles (49) have the highest concentration of Critical Care Medicine (Internal Medicine) providers in California.
How many Critical Care Medicine (Internal Medicine) providers in California received drug or device company payments?301 of 730 Critical Care Medicine (Internal Medicine) providers in California (41%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
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 Critical Care Doctors (Internal Medicine) in California work in independent practices or large health systems?Among 540 Critical Care Doctors (Internal Medicine) in California enrolled in Medicare, 7% bill through a solo or small practice with fewer than 10 clinicians, 17% through a mid-size group of 10 to 99, and 76% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Critical Care Doctors (Internal Medicine) in California work at?According to CMS facility affiliation records, the California hospitals where the most Critical Care Doctors (Internal Medicine) hold privileges are UC San Diego Health Hillcrest - Hillcrest Med Ctr in San Diego; Stanford Health Care in Stanford; Stanford Health Care Tri-Valley in Pleasanton.
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