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Internal Medicine Doctors in California

Data updated monthly · Last refresh October 2026

17,715 Internal Medicine providers practice in California, including 4,245 (24%) 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.

17,715providers
4,245telehealth
Los Angelestop city

Internal Medicine by city in California

Choose a city to see providers there.

Internal Medicine in Los Angeles1,417 providers
Internal Medicine in San Francisco1,322 providers
Internal Medicine in San Diego970 providers
Internal Medicine in Sacramento602 providers
Internal Medicine in Oakland434 providers
Internal Medicine in San Jose433 providers
Internal Medicine in Stanford383 providers
Internal Medicine in Fresno339 providers
Internal Medicine in Torrance230 providers
Internal Medicine in Long Beach225 providers
Internal Medicine in Bakersfield210 providers
Internal Medicine in Loma Linda209 providers
Internal Medicine in Palo Alto189 providers
Internal Medicine in Anaheim188 providers
Internal Medicine in Orange188 providers
Internal Medicine in Riverside188 providers
Internal Medicine in Walnut Creek184 providers
Internal Medicine in Santa Monica170 providers
Internal Medicine in La Jolla161 providers
Internal Medicine in Roseville159 providers
Internal Medicine in Irvine155 providers
Internal Medicine in Beverly Hills152 providers
Internal Medicine in Santa Clara142 providers
Internal Medicine in Pasadena138 providers

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. Mitch Biermann
San Diego, CA · $152 in drug and device payments (2025) · Telehealth · (858) 764-3320
Dr. Mitra Ghafourian, M. D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 939-3400
Dr. Mohamed Elnaggar, MD
San Diego, CA · $25 in drug and device payments (2025) · (800) 926-8273
Dr. Mohammad Samara, M.D.
San Diego, CA · $31 in drug and device payments (2025) · (414) 793-0115
Dr. Mohammed Paika, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (858) 499-2616
Dr. Mohammed Shaker, MD, PHD
San Diego, CA · $1,522 in drug and device payments (2025) · Telehealth · (619) 543-6222
Dr. Mohanad Hadi, M.D.
San Diego, CA · $1,439 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Mona Singh, MD
San Diego, CA · No drug or device payments recorded (2025) · (877) 236-0333
Dr. Monica Celine Fortich, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Monica Vidaurrazaga, MD
San Diego, CA · $112 in drug and device payments (2025) · (619) 515-2545
Dr. Muhammad Edhi, MD
San Diego, CA · No drug or device payments recorded (2025) · (800) 926-8273
Dr. Murali Srinivasan, MD
San Diego, CA · No drug or device payments recorded (2025) · (360) 441-0311
Dr. Murray Kornblit, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 229-5075
Dr. Myrna Vargas, M.D.
San Diego, CA · $151 in drug and device payments (2025) · (858) 277-3410
Dr. Nadine Wilson, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5435
Dr. Nagambika Munaganuru, MD
San Diego, CA · $107 in drug and device payments (2025) · (619) 471-9250
Dr. Namita Sachdev, MD
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (800) 926-8273
Dr. Nancy Huth, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 767-1711
Dr. Nandlal Patel, MD
San Diego, CA · $59 in drug and device payments (2025) · (619) 299-1419
Dr. Natalie Garcia Stratton, M.D
San Diego, CA · $20 in drug and device payments (2025) · (858) 552-8585
Dr. Natalie Prussak
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (619) 543-6268
Dr. Natalie Sweiss, M.D.
San Diego, CA · $153 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Natalie Yee, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Nathan Hua, MD
San Diego, CA · $19 in drug and device payments (2025) · (619) 280-7185
Dr. Nathan Yung, MD
San Diego, CA · No drug or device payments recorded (2025) · (800) 926-8273
Dr. Neda Yazdi, MD
San Diego, CA · No drug or device payments recorded (2025) · (310) 427-4627
Dr. Neelakantan Ramineni, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 265-0504
Dr. Nehal Patel, MD
San Diego, CA · No drug or device payments recorded (2025) · (833) 574-2273
Dr. Neil Hirschenbein, M.D.,PHD
San Diego, CA · No drug or device payments recorded (2025) · (858) 546-8055
Dr. Neil Levine, M.D.
San Diego, CA · $17 in drug and device payments (2025) · (800) 926-8273
Dr. Nelar Wine, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Neysan Pucks, MD
San Diego, CA · No drug or device payments recorded (2025) · (858) 939-5241
Dr. Ngocbich Nguyen, MD
San Diego, CA · $844 in drug and device payments (2025) · Telehealth · (619) 298-2900
Dr. Nguyen Nguyen, M.D.
San Diego, CA · $132 in drug and device payments (2025) · (858) 541-0181
Dr. Nguyenthi Robinson, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 528-5000
Dr. Nicholas Dembitsky
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 499-2703
Dr. Nicole Basler
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Nicole Tremain, M.D.
San Diego, CA · No drug or device payments recorded (2025) · Telehealth · (858) 223-2510
Dr. Nikki Switzer, MD
San Diego, CA · $61 in drug and device payments (2025) · Telehealth · (800) 926-8273
Dr. Nilesh Shah, M.D.
San Diego, CA · No drug or device payments recorded (2025) · (619) 400-5050
Dr. Nina Rabin, M.D.
San Diego, CA · $122 in drug and device payments (2025) · Telehealth · (619) 245-2810
Dr. Niraj Madhani, MD
San Diego, CA · No drug or device payments recorded (2025) · (800) 926-8273
Dr. Nirmaljot Kaur, MD
San Diego, CA · $274 in drug and device payments (2025) · (619) 543-6268
Dr. Nittly Chahal, M.D.
San Diego, CA · $22 in drug and device payments (2025) · Telehealth · (858) 541-0181
Dr. Nivaas Thanoo, MD
San Diego, CA · $36 in drug and device payments (2025) · Telehealth · (858) 554-7272
Dr. Nivedita Restaino, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 400-5000
Dr. Noha Abdelgelil, MD
San Diego, CA · $704 in drug and device payments (2025) · (858) 230-2375
Dr. Noli Cava, M.D.
San Diego, CA · $1,810 in drug and device payments (2025) · Telehealth · (619) 221-4490
Dr. Nuzhat Islam
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-6268
Dr. Oluwatoyin Thompson, MD
San Diego, CA · No drug or device payments recorded (2025) · (619) 543-5297

Conditions Internal Medicine providers in California commonly treat

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

Common questions

How many Internal Medicine providers are in California?

There are 17,715 Internal Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.

Do Internal Medicine providers in California offer telehealth?

Yes. 4,245 of the 17,715 Internal Medicine providers in California (about 24%) report offering telehealth services in CMS data.

Which cities in California have the most Internal Medicine providers?

Los Angeles (1,417), San Francisco (1,322), San Diego (970) have the highest concentration of Internal Medicine providers in California.

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

5,614 of 17,715 Internal Medicine providers in California (32%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Internal Medicine providers in California treat?

Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management 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 Internal Medicine Doctors in California work in independent practices or large health systems?

Among 10,847 Internal Medicine Doctors in California enrolled in Medicare, 20% bill through a solo or small practice with fewer than 10 clinicians, 12% through a mid-size group of 10 to 99, and 67% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Internal Medicine Doctors in California work at?

According to CMS facility affiliation records, the California hospitals where the most Internal Medicine Doctors hold privileges are Stanford Health Care in Stanford; UCSF Medical Center in San Francisco; Ronald Reagan UCLA Medical Center in Los Angeles.

Related reading on HealthcareDiscovery.AI

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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 Internal Medicine in California? Get featured.