Find a Top Internist Near Me in Fontana, CA – Book an Appointment Instantly

Need to make an appointment? Use Tebra to find and compare top-rated Internists nearby. Simple, fast and secure.

LOCAL HEALTHCARE PROVIDERS

Internists with Great Reviews in Fontana, CA

Tebra only allows patients to write reviews following their scheduled appointment with the provider or practice.

Verified Internists in Fontana, CA

Tebra verifies providers before they can appear in Tebra search. Find a top-rated provider and book an appointment instantly.

217 providers

Availability last updated 08/25/2026

Dr. Rahul Gaglani, MD
5.0
(3)
Dr. Rahul Gaglani, MD Cardiovascular Disease Physician
40.5 mi
5.0 (3)
25395 Hancock Ave
Suite 230
Murrieta, CA 92562
View profile
About Dr. Rahul Gaglani, MD

REQUEST APPOINTMENT

Rahul Gaglani, MD, is a board-certified interventional and general cardiologist serving patients at Core Cardiology in Murrieta and Temecula, California. He specializes in percutaneous interventions of the coronary arteries (radial approach) and structural heart disease intervention (atrial septal defects, patent foramen ovale, aortic stenosis, and hypertrophic cardiomyopathy). 

Dr. Gaglani graduated from the Rutgers School of Environmental and Biological Sciences in New Brunswick, New Jersey, with a Bachelor of Science in biochemistry with a concentration in economics. He then earned his Doctor of Medicine from Ross University School of Medicine. Upon graduating, he completed his internal medicine residency at Saint Vincent Catholic Medical Center and his fellowships in general and interventional cardiology at NewYork-Presbyterian Brooklyn Methodist Hospital, both in New York City. Prior to establishing his private practice, he worked at various medical centers in New York and California. 

He established his private practice in 2017, where he provides a wide range of treatments for cardiovascular disease, arrhythmias, heart failure, peripheral artery disease, and venous disease. He also offers coronary artery intervention and structural heart intervention, as well as heart disease prevention services.

Dr. Gaglani is board certified in interventional/general cardiology, echocardiography, cardiac nuclear medicine, and vascular imaging. His expertise in vascular disease also allows him to treat peripheral arterial/venous disease, including non-healing ulcers and wounds of the lower extremities, as well as stenosis of the carotid vessels, radial approach angiography, structural heart disease, high-risk PCI, and vein ablations.

To schedule an appointment at the office of Rahul Gaglani, MD, call the office or book a consultation online.

Practice
Core Cardiology
Latest Review
“Doctor Gaglani is very knowledgeable and through. He took the time to explain my health situation in a way that I could easily comprehend. He came across as a warm and caring person. ”
Dr. Rahul Gaglani, MD

Dr. Rahul Gaglani, MD

Internist

25395 Hancock Ave
Suite 230
Murrieta, CA 92562

5.0 (3)
Elie Ghasb, MD
5.0
(2)
Elie Ghasb, MD Internist
40.5 mi
5.0 (2)
25395 Hancock Ave Ste 240
Murrieta, CA 92562
View profile
About Elie Ghasb, MD
Meet Elie Ghasb, M.D. Dr. Elie Ghasb is a dedicated Internal Medicine physician committed to providing compassionate, patient-centered care to our community. He graduated from the University of California, Riverside School of Medicine, and completed his training at Riverside University Health System, where he honed his clinical expertise and passion for improving community health. Dr. Ghasb brings a holistic approach to medicine, emphasizing healthy habits, active listening, and personalized treatment plans. His care philosophy centers around treating each patient as a whole person, not just addressing symptoms. Dr. Ghasb's research contributions, volunteer work at free clinics, and mentorship of medical students underscore his dedication to advancing healthcare and fostering trust with his patients. As a physician deeply rooted in the community, he is committed to building lasting relationships with his patients and their families.
Practice
Ghasb Internal Medicine, Primary & Preventative Care
Latest Review
“Best primary doctor ever I recommend him for the families 👍”
Elie Ghasb, MD

Elie Ghasb, MD

Internist

25395 Hancock Ave Ste 240
Murrieta, CA 92562

5.0 (2)
Healthcare specialist
Dr. Sima Mirhashemi, DO Internist
42.3 mi
1501 Superior Avenue, Suite 304
Newport Beach, CA 92663
View profile

Dr. Sima Mirhashemi, DO

Internist

1501 Superior Avenue, Suite 304
Newport Beach, CA 92663

Healthcare specialist
4.9
(110)
Dr. Joseph Mardanzai, MD Internist
42.8 mi
4.9 (110)
27184 Ortega Hwy
Suite 104
San Juan Capistrano, CA 92675
View profile
About Dr. Joseph Mardanzai, MD

About Prestige Medicine

Prestige Med offers the latest in aesthetics and anti-aging, for San Ramon, San Jose, and San Juan Capistrano, CA. We provide safe and effective treatments using the latest technology, with limited downtime.

Dr. Mardanzai's background consists of over 20 years as a procedurist in various settings. Most notably, he has worked in wound care specialty as the previous Medical Director of the San Ramon Regional Multispecialty Advanced Wound Center, before pursuing a fellowship in facial aesthetics. He is dual board-certified with ABIM and the American Aesthetic Association.

Our mission is to rejuvenate every patient, and help them reach their most youthful and vibrant self. Your care will be provided by our expert physician and our master nurse injector. Our services range from minimally invasive to more vigorous procedures, and are designed to help you feel and look your best.

Call us to make an appointment!

 

Practice
Prestige Med
Latest Review
“Excellent”

Dr. Joseph Mardanzai, MD

Internist

27184 Ortega Hwy
Suite 104
San Juan Capistrano, CA 92675

4.9 (110)
Healthcare specialist
Brittney Brown, DO Internist
42.9 mi
16209 Paramount Blvd
Paramount, CA 90723
View profile

Brittney Brown, DO

Internist

16209 Paramount Blvd
Paramount, CA 90723

Dr. Adrienne Oconnell, do
5.0
(14)
Dr. Adrienne Oconnell, do Internist
43.3 mi
5.0 (14)
610 N Coast Hwy
Suite 208
Laguna Beach, CA 92651
View profile
About Dr. Adrienne Oconnell, do

LAGUNA BEACH AESTHETICS

 

Adrienne O’Connell, DO, is a native to the San Francisco Bay area and an expert aesthetic and wellness specialist at Laguna Beach Aesthetics, an aesthetics and wellness clinic in the heart of Laguna Beach, California.   

Dr. O’Connell also has advanced training certificates in Aesthetic procedures including PRP for the “Vampire Facelift” and hair rejuvenation. She gained advanced skill in Botox, Dermal Fillers, chemical peels, sclerotherapy, skin rejuvenation and resurfacing with CO2 lasers and light therapy, microneedling and PRP – platelet rich plasma.  

At Laguna Beach Aesthetics, Cosmetic Dermatology and Laser Center, you will meet with Dr. O’Connell herself for a consultation and all procedures are performed by her.  Each visit and procedure are tailored to you specifically by Dr. O’Connell.


Book Your Appointment

Practice
Laguna Beach Aesthetics
Latest Review
“Great care and personal attention.”
Dr. Adrienne Oconnell, do

Dr. Adrienne Oconnell, do

Internist

610 N Coast Hwy
Suite 208
Laguna Beach, CA 92651

5.0 (14)
Healthcare specialist
4.98
(54)
Harut Hovsepyan, MD, MPH Addiction Medicine Physician
44.1 mi
4.98 (54)
1809 Verdugo Blvd
Suite 260
Glendale, CA 91208
View profile
Latest Review
“Great Dr.”

Harut Hovsepyan, MD, MPH

Internist

1809 Verdugo Blvd
Suite 260
Glendale, CA 91208

4.98 (54)
Healthcare specialist
James Pearson, md Adult Medicine Physician
44.2 mi
1600 Pacific Coast Hwy
Seal Beach, CA 90740
View profile

James Pearson, md

Internist

1600 Pacific Coast Hwy
Seal Beach, CA 90740

Healthcare specialist
Dr. Janne Dewing, MD Internist
44.4 mi
31862 Coast Hwy
Suite #200
Laguna Beach, CA 92651
View profile
About Dr. Janne Dewing, MD

Janne Huynh Dewing, MD, is a board-certified physician with over 20 years of experience providing high quality, personalized patient care. Specializing in internal medicine at her Laguna Beach, California, private practice, Dr. Janne has experience preventing, diagnosing, and treating a wide range of acute and chronic conditions. She helps patients address their medical risks and concerns, and take steps towards improving their overall health. 

Dr. Janne completed her undergraduate studies at Cornell University in Ithaca, New York. She then went on to the University of California, Los Angeles (UCLA) School of Medicine, earning her Doctor of Medicine. After completing her education, Dr. Janne began her medical training at New York-Presbyterian Hospital in New York, where she completed both her internship and residency. 

Dr. Janne has held positions in both patient care and education. After her residency, she held the position of assistant professor of clinical medicine at the Albert Einstein College of Medicine in the Bronx, New York, where she was responsible for teaching evidence-based medicine to more than 70 medical students, interns, and physicians. She also served as an attending physician at Jack D. Weiler Hospital, also in the Bronx. 

As an internist, Dr. Janne helps adults address the full spectrum of their health care needs. She provides personalized health care solutions, including physician grade supplements through Metagenics® and Xymogen®, and specializes in several innovative treatment methods, including hormone replacement therapy and personalized weight loss programs. She also provides several gentle and effective aesthetic solutions like chemical peels, Botox®, and TempSure® Envi.

Dr. Janne’s office has a convenient location on the South Coast Medical Center campus. To schedule your visit, call or use the online booking tool.

Practice
Dr. Janne

Dr. Janne Dewing, MD

Internist

31862 Coast Hwy
Suite #200
Laguna Beach, CA 92651

Healthcare specialist
4.71
(598)
Dr. Daniel Brelian, MD Internist
45.0 mi
4.71 (598)
711 West College Street
Suite 203
Los Angeles, CA 90012
View profile
About Dr. Daniel Brelian, MD

Dr. Daniel Brelian is a gastroenterologist at Downtown Gastro Medical Group in Los Angeles. He is board-certified in Internal Medicine and Gastroenterology, and is passionate about helping patients recover from a wide range of digestive ailments and conditions.

Dr. Brelian received his bachelor’s degree in Molecular and Cell Biology from the University of California, Berkeley and went on to earn his Doctor of Medicine at Drexel University College of Medicine in Philadelphia.

He has worked in some of the most innovative and prestigious medical centers in the nation, including Cedars-Sinai Medical Center, Georgetown University Hospital, and New York University. Before opening his private practice, he was a physician at the Pacific Alliance Medical Group.

Dr. Brelian’s work has appeared in numerous medical journals, including Gastroenterology and Gastrointestinal Endoscopy. Committed to the latest research and training, he is also a member of many professional organizations, including the American College of Gastroenterology (ACG) and the American Gastroenterological Association (AGA).

At Downtown Gastro Medical Group, Dr. Brelian helps patients recover from conditions like irritable bowel syndrome, food allergies, acid reflux disease, Crohn's disease, and more. With a commitment to the most excellent quality of patient care, his patients feel supported and empowered to live their healthiest lives.

Practice
Downtown Gastro Medical Group
Latest Review
“It's a nice place people are friendly and the Doctor is very nice and friendly ”

Dr. Daniel Brelian, MD

Internist

711 West College Street
Suite 203
Los Angeles, CA 90012

4.71 (598)
Healthcare specialist
David Steenblock, DO Adult Medicine Physician
45.5 mi
187 Avenida La Pata
San Clemente, CA 92673
View profile

David Steenblock, DO

Internist

187 Avenida La Pata
San Clemente, CA 92673

Healthcare specialist
Ki Cho, MD Internist
48.6 mi
3130 West Olympic Boulevard Ste 230
Los Angeles, CA 90006
View profile

Ki Cho, MD

Internist

3130 West Olympic Boulevard Ste 230
Los Angeles, CA 90006

Dr. Kanagaratnam Sivalingam, MD
5.0
(2)
Dr. Kanagaratnam Sivalingam, MD Geriatrician
48.9 mi
5.0 (2)
1220 E Ave S
Suite M
Palmdale, CA 93550
View profile
About Dr. Kanagaratnam Sivalingam, MD

Kanagaratnam Sivalingam, MD, FACP, is a skilled internist at First Valley Medical Group in Lancaster, California. He has more than 40 years of experience in treating numerous acute and chronic conditions. Dr. Sivalingam spends time with patients and listens to their concerns, giving them a voice in their treatment.

Dr. Sivalingam earned his medical degree from the University of Ceylon Medical School in Peradeniya, Sri Lanka. He completed his internal medicine training at the Hospital for Joint Diseases in New York City and his residency at Vembadi Polyclinic in Ceylon, Sri Lanka.

He maintains his advanced credentials with continuing education. Dr. Sivalingam is board certified in internal medicine and licensed in the state of California. He’s a fellow of the American College of Physicians and a member of the American Medical Association, American Society of Echocardiography, American Academy of Anti-Aging Medicine, and numerous other professional organizations.

At First Valley Medical Group, Dr. Sivalingam provides premium care for patients with a variety of chronic diseases using a compassionate bedside manner. He uses the most innovative technology and procedures to provide expert treatments.

Dr. Sivalingam evaluates each patient as a whole person and offers conservative treatments whenever possible. He and his team warmly welcome patients to First Valley Medical Group and look forward to serving them.

Practice
First Valley Medical Group
Latest Review
“Excellent care!!”
Dr. Kanagaratnam Sivalingam, MD

Dr. Kanagaratnam Sivalingam, MD

Geriatrician

1220 E Ave S
Suite M
Palmdale, CA 93550

5.0 (2)
Kelly Okray, PA-C, MSPAS
5.0
(2)
Kelly Okray, PA-C, MSPAS Physician Assistant
48.9 mi
5.0 (2)
1220 E Ave S
Suite M
Palmdale, CA 93550
View profile
About Kelly Okray, PA-C, MSPAS
Kelly Okray, PA-C has been with First Valley Medical Group since July 2022. First Valley Medical Group is an internal medicine outpatient clinic with multiple locations. Kelly works at our Lancaster location off of Lancaster Boulevard and 10 th street. She can help diagnose and manage various conditions including hypertension, diabetes, thyroid conditions, heart failure and many others. Kelly can help you understand your conditions, lab work and images, and get you connected with a specialist as needed. She is also able to provide basic preventative women’s health care. She is passionate about preventative medicine through diet and lifestyle changes and would love to help you get and stay healthy. She is originally from Minnesota, relocating nearly two and a half years ago and is making Lancaster her
Practice
First Valley Medical Group
Latest Review
“Excellent care!!”
Kelly Okray, PA-C, MSPAS

Kelly Okray, PA-C, MSPAS

Physician Assistant

1220 E Ave S
Suite M
Palmdale, CA 93550

5.0 (2)
Dr. Barry Buffman, MD
5.0
(2)
Dr. Barry Buffman, MD Urologist
48.9 mi
5.0 (2)
1220 E Ave S
Suite M
Palmdale, CA 93550
View profile
About Dr. Barry Buffman, MD

Dr. Barry Buffman has been practicing since 1980 in internal medicine with a specialty in urology. He graduated from the Rush Medical College in Chicago, IL and practices with a focus on a multitude of urological issues, such as sexual dysfunction, bladder, and prostate conditions. In addition, Dr. Buffman is involved with medical research for various urological conditions. In his spare time Dr. Buffman has a passion for teleplay/screenplay, musical composition, guitar, and piano.

Practice
First Valley Medical Group
Latest Review
“Excellent care!!”
Dr. Barry Buffman, MD

Dr. Barry Buffman, MD

Urologist

1220 E Ave S
Suite M
Palmdale, CA 93550

5.0 (2)
Healthcare specialist
Jon Persichino, DO Infectious Disease Physician
1.2 mi
16779 Spring St.
Fontana, CA 92335

Jon Persichino, DO

Infectious Disease Physician

16779 Spring St.
Fontana, CA 92335

Healthcare specialist
Satish Choudhary, MD Cardiovascular Disease Physician
6.1 mi
10841 White Oak Ave
Rancho Cucamonga, CA 91730
+1 more location

Satish Choudhary, MD

Internist

10841 White Oak Ave
Rancho Cucamonga, CA 91730

Healthcare specialist
Mihran Ask, MD Addiction Medicine Physician
6.4 mi
8300 Utica Ave Ste 310
Rancho Cucamonga, CA 91730

Mihran Ask, MD

Internist

8300 Utica Ave Ste 310
Rancho Cucamonga, CA 91730