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Internists with Great Reviews in Rancho Cucamonga, CA

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Verified Internists in Rancho Cucamonga, CA

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273 providers

Availability last updated 10/30/2026

Healthcare specialist
Jun-Ichi Ohara, MD, PhD Gastroenterologist
33.7 mi
22 Odyssey
Ste #175
Irvine, CA 92618

Jun-Ichi Ohara, MD, PhD

Gastroenterologist

22 Odyssey
Ste #175
Irvine, CA 92618

Healthcare specialist
Shirin Afrasiabi, MD Inc Internist
33.8 mi
4950 Barranca Pkwy
Ste 308
Irvine, CA 92694

Shirin Afrasiabi, MD Inc

Internist

4950 Barranca Pkwy
Ste 308
Irvine, CA 92694

Healthcare specialist
Ann Mai, MD Internist
33.8 mi
4950 Barranca Pkwy., Ste 207
Irvine, CA 92604

Ann Mai, MD

Internist

4950 Barranca Pkwy., Ste 207
Irvine, CA 92604

Healthcare specialist
John Wikle, MD Internist
33.8 mi
4950 Barranca Pkwy Ste 207
Irvine, CA 92604

John Wikle, MD

Internist

4950 Barranca Pkwy Ste 207
Irvine, CA 92604

Healthcare specialist
Anhtuan Nguyen, MD Internist
34.2 mi
14541 Brookhust St
Suite D2
Westminster, CA 92683

Anhtuan Nguyen, MD

Internist

14541 Brookhust St
Suite D2
Westminster, CA 92683

Healthcare specialist
Hieu N Tram, MD Internist
34.9 mi
15355 Brookhurst Street
102
Westminster, CA 92683

Hieu N Tram, MD

Internist

15355 Brookhurst Street
102
Westminster, CA 92683

Healthcare specialist
Laura Ryan, MD Internist
35.0 mi
11480 Brookshire Avenue
200
Downey, CA 90241

Laura Ryan, MD

Internist

11480 Brookshire Avenue
200
Downey, CA 90241

Healthcare specialist
Alan Frischer, MD Internist
35.0 mi
11480 Brookshire Avenue
200
Downey, CA 90241

Alan Frischer, MD

Internist

11480 Brookshire Avenue
200
Downey, CA 90241

Healthcare specialist
William Sim, MD Internist
35.0 mi
11480 Brookshire Avenue
200
Downey, CA 90241

William Sim, MD

Internist

11480 Brookshire Avenue
200
Downey, CA 90241

Healthcare specialist
Andy Nguyen Endocrinologist
35.1 mi
9211 Bolsa Avenue, Suite 221
Westminster, CA 92683

Andy Nguyen

Endocrinologist

9211 Bolsa Avenue, Suite 221
Westminster, CA 92683

Dr. John Alevizos, DO
Dr. John Alevizos, DO Adult Medicine Physician
35.2 mi
15751 Rockfield Blvd
Suite 120
Irvine, CA 92618
About Dr. John Alevizos, DO

Welcome to Alevizos Medical

Alevizos Medical in Irvine, California, specializes in anti-aging medicine, helping patients to look and feel energetic, having more lean muscle mass, and happier. 

Founder John Alevizos, DO, is a board-certified family practice physician who has a passion for anti-aging medicine. He follows the principles of integrative medicine to combine the most beneficial aspects of conventional and alternative methods, and provide a holistic approach to patient care.

His primary focus is the use of bioidentical hormone replacement therapy (BHRT) to address hormone imbalances. Less-than-optimal levels of essential hormones like estrogen and testosterone can cause issues such as weight gain, loss of sex drive, lack of energy, moodiness and anxiety, trouble sleeping, and depression. 

Dr. Alevizos and his team also offer effective long-term solutions to weight loss to help patients look and feel their best and enjoy life to the fullest.

He treats a range of sports injuries using innovative products like platelet-rich plasma (PRP) to encourage tissue healing.

Find out more about looking and feeling younger by calling Alevizos Medical or booking an appointment online today.

Practice
Alevizos Medical
Dr. John Alevizos, DO

Dr. John Alevizos, DO

Internist

15751 Rockfield Blvd
Suite 120
Irvine, CA 92618

Alisa Farokhian, MD
Alisa Farokhian, MD Gastroenterologist
35.5 mi
23600 Rockfield Blvd
Suite 2N
Lake Forest, CA 92630
About Alisa Farokhian, MD

Dr. Alisa Farokhian, MD, specializes in internal medicine and is completing her fellowship in Advanced IBD GI.

Dr. Alisa Farokhian prides herself in her dedication to providing patients with exceptional care, respect, and support. She is completing her advanced IBD program at the prestigious Columbia University Hospital, while additionally working on her GI fellowship.  

Additionally, Dr. Alisa Farokhian has received countless awards and recognition for her participation in research and publications. She continues her education by attending and speaking at numerous top GI conferences to learn the most technological advances in medicine.

Practice
American Beauty Med Spa
Alisa Farokhian, MD

Alisa Farokhian, MD

Gastroenterologist

23600 Rockfield Blvd
Suite 2N
Lake Forest, CA 92630

Healthcare specialist
Jesse Wasley, MD Cardiologist
35.5 mi
17100 Euclid Street
Fountain Valley, CA 92708
+3 more locations

Jesse Wasley, MD

Cardiologist

17100 Euclid Street
Fountain Valley, CA 92708

Healthcare specialist
Ky Vu, MD Internist
35.6 mi
17150 Euclid St, Ste 200
Fountain Valley, CA 92708

Ky Vu, MD

Internist

17150 Euclid St, Ste 200
Fountain Valley, CA 92708

Healthcare specialist
Yu-Nan Hsu, DO Internist
35.6 mi
17150 Euclid St Ste 200
Fountain Valley, CA 92708

Yu-Nan Hsu, DO

Internist

17150 Euclid St Ste 200
Fountain Valley, CA 92708

Healthcare specialist
Wisam Alfay, MD, FACC Cardiovascular Disease Physician
36.0 mi
26960 Cherry Hills Blvd
Ste C
Sun City, CA 92586
+7 more locations

Wisam Alfay, MD, FACC

Internist

26960 Cherry Hills Blvd
Ste C
Sun City, CA 92586

James Wortham, MD
4.9
(95)
James Wortham, MD Internist
36.2 mi
4.9 (95)
4701 Gould Ave
La Canada Flintridge, CA 91011
+1 more location
About James Wortham, MD
Dr. Keller Wortham is a General Practitioner who has been practicing Family Medicine in the Los Angeles area for fifteen years Dr. Keller Wortham received his Medical Degree from Georgetown University, and completed his internship in Internal Medicine at the University of Pittsburgh. Dr. Wortham believes the first step to a healthy lifestyle is understanding the human body. He therefore always makes sure to devote time educating patients on their individual health and treatment options so they can make informed decisions about their medical care.
Practice
Optimum Medical Group North
Latest Review
“Friendly office staff very helpful”
James Wortham, MD

James Wortham, MD

Internist

4701 Gould Ave
La Canada Flintridge, CA 91011

4.9 (95)
Nare Stepanyan, MD
4.78
(50)
Nare Stepanyan, MD Internist
36.2 mi
4.78 (50)
4701 Gould Ave
La Canada Flintridge, CA 91011
+1 more location
About Nare Stepanyan, MD
Growing up in Germany, Dr. Stepanyan was exposed to a diverse population at the heart of Europe. Throughout her studies, Dr. Stepanyan had the opportunity to closely study the public health systems of various countries, notably the United States. Dr. Stepanyan completed extensive residency training in family medicine at Loma Linda University and Adventist Health, working very closely with an underserved population with very complex health needs. Her experience and depth of knowledge quickly certified her with the American Board of Family Medicine. Outside of her community, Dr. Stepanyan has a strong passion about global health and medical mission work. She is fluent in German, English, Russian, and Armenian.
Practice
Optimum Medical Group North
Latest Review
“As always, the staff and Dr. Stepanyan were efficient, friendly and wonderful!”
Nare Stepanyan, MD

Nare Stepanyan, MD

Internist

4701 Gould Ave
La Canada Flintridge, CA 91011

4.78 (50)