1,562 Internists Found in Fontana, CA

We found 1,562 Internists available in Fontana, CA with an average 4 stars across 5,803 reviews. Find the best one for your needs by years of experience, distance, reviews on Vitals, and more through the filters provided below. Currently, 569 Internists listed are accepting new patients and 520 accept Medicare.

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Featured Results

Dr. Nima Ghadimi, MD

Internal Medicine
Spent time with me
29 years exp
Accepting New Patients
Virtual Visit available
Scottsdale, AZ
"Dr. Ghadimi is an exceptional doctor. If you need a Telehealth visit, the service is outstanding unless one is scheduled with the AWFUL M.A. Julian Zermeno." View Profile

Dr. Alaa Hajal, MD

Internal Medicine
15 years exp
Accepting New Patients
Virtual Visit available
Diamond Bar, CA
Dr. Alaa Hajal is redefining the primary care experience at La Vista Medical Center, serving as a cornerstone of health and vitality for the Diamond Bar community. View Profile

Karthikeyan Viswanathan, DO

Internal Medicine
12 years exp
Accepting New Patients
Virtual Visit available
Los Altos, CA
Dr. Karthikeyan Viswanathan, DO, is a physician who brings a unique perspective to medicine through his diverse professional background. View Profile

Dr. George Mousa, MD

Internal Medicine
17 years exp
Accepting New Patients
Virtual Visit available
Upland, CA
Dr. George Mousa specializes in preventive care and chronic disease management within Internal Medicine. View Profile

Dr. Roopa Chari, MD

Integrative Medicine
Had a good bedside manner
31 years exp
Accepting New Patients
Virtual Visit available
Encinitas, CA
"I struggled with eczema on my skin and scalp most of my life. About 3 months before my first appointment with Dr. Chari, my eczema started to flare up very badly. " View Profile

Dr. Adama Diarra, DO

Internal Medicine
Provided follow-up after the visit
14 years exp
Accepting New Patients
Virtual Visit available
Tigard, OR
"Dr. Adama Diarra was my 84 year old father's PCP. Dr. Diarra was very pro-active in adjusting his medications as his disease sates progressed and his kidney function declined." View Profile

Dr. Samantha Von Ins, MD

Family Medicine
Had a good bedside manner
16 years exp
Accepting New Patients
Virtual Visit available
Placentia, CA
"Her staff is so friendly and courteous. The new office in Placentia is soooo beautiful! Dr. Von Ins is so thorough, patient, and very knowledgeable. Love her!!" View Profile

Dr. Virginia Von Schaefer, MD

Oncology
Provided follow-up after the visit
43 years exp
Accepting New Patients
Virtual Visit available
San Clemente, CA
"As I sit here in the VVS MD IV treatment room with 3 other patients, we are all sharing our stories." View Profile

All Results

Dr. Rishu Marwaha, MD

Internal Medicine
25 years exp
Fontana, CA2.0 mi
Dr. Rishu Marwaha, MD is a health care provider primarily located in Fontana, CA, with other offices in Upland, CA and Fontana, CA. She has 25 years of experience. View Profile

Dr. Rameschandra D Bambhania, MD

Dermatology
41 years exp
Accepting New Patients
Virtual Visit available
Tustin, CA
"Dr. Bambhania is a godsend to me, I would have given 100+ stars if possible..." View Profile

Dr. Karanbir Brar

Geriatric Medicine
Spent time with me
16 years exp
Accepting New Patients
Virtual Visit available
Oceanside, CA
"I am always looking for doctors who are focused on prevention and providing the highest level of care and concern, Dr, Brar was extremely well intentioned in his ability to guide me to certain tests and health strategies to get some of my markers under control and also recc some advanced new tests to truly allow us to establish a strong prevention plan." View Profile

Dr. Glenn Yukio Miya, MD

Internal Medicine
37 years exp
Fontana, CA2.0 mi
"Dr. Miya was out family Dr. for more than 20 years." View Profile

Dr. John Wilson Samples, MD

Internal Medicine
29 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Dr Samples is one of the great ones. He listens and actually answers any questions in a way a lay person can ununderstand. He is one of the most caring doctors I have ever met." View Profile

Dr. Nima Ghadimi, MD

Internal Medicine
Had a good bedside manner
29 years exp
Accepting New Patients
Virtual Visit available
Scottsdale, AZ
"Dr. Ghadimi is an exceptional doctor. If you need a Telehealth visit, the service is outstanding unless one is scheduled with the AWFUL M.A. Julian Zermeno." View Profile

Dr. Faramarz Alav, MD

Internal Medicine
46 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Dr Alav staff are polite, professional, hard working and caring. Like I mentioned before I would refer friends and family." View Profile

Dr. Samantha Von Ins, MD

Family Medicine
Had a good bedside manner
16 years exp
Accepting New Patients
Virtual Visit available
Placentia, CA
"Her staff is so friendly and courteous. The new office in Placentia is soooo beautiful! Dr. Von Ins is so thorough, patient, and very knowledgeable. Love her!!" View Profile

Dr. Hiteshi Thakker, MD

Internal Medicine
15 years exp
Fontana, CA2.0 mi
"Dr. Thakker is smart, she listens to patients, and she genuinely cares about their health and well-being." View Profile

Dr. Farnaz Memarzadeh, MD

Ophthalmology
25 years exp
Fontana, CA2.0 mi
"Iam her New patient and I feel good with her. She is friendly and attentive." View Profile

Dr. Meenu Bawa, MD

Internal Medicine
31 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Read my file before coming in the room. Was polite and knowledgeable. Did a thorough check up and made sure I got timely follow up. Very professional." View Profile

Dr. Lubna Isho, DO

Family Medicine
Gave an accurate diagnosis
1 Award
25 years exp
Accepting New Patients
Virtual Visit available
POMONA, CA
"She's a very good doctor, very helpful and informative. They are also very quick on sending out refferals to see other specialist 5/5" View Profile

Dr. Michael Arden Gomez Perdon, MD

Internal Medicine
23 years exp
Fontana, CA2.0 mi
Dr. Michael Arden Gomez Perdon, MD is a health care provider primarily located in Fontana, CA, with another office in Houston, TX. He has 23 years of experience. View Profile

Eric Harker

Internal Medicine
Provided follow-up after the visit
25 years exp
Accepting New Patients
Virtual Visit available
Lyons, CO
"Eric is amazing and the most caring person I know. He always has a huge smile on his face and feels super blessed that he gets to help people for his job." View Profile

Dr. Aman Ullah Lutfy, MD

Cardiovascular Disease
49 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Super nice and very sharp doctor. He explains things very well and takes his time. He's been my Cardio Doc for almost 3 years." View Profile

Dr. Daniel Varoujan Nargizian, DO

Internal Medicine
25 years exp
Accepting New Patients
Fontana, CA2.0 mi
Dr. Daniel Varoujan Nargizian, DO is a health care provider primarily located in Fontana, CA, with other offices in Panorama City, CA and Woodland Hills, CA(and 2 other locations). View Profile

Dr. Charles Sallum Sabbah, MD

Internal Medicine
45 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Dr. Sabbah has been my doctor for about 15 years he is the best doctor I ever had. he not only a doctor he is a friend." View Profile

Dr. Mary Phuong Bui, DO

Nephrology
28 years exp
Accepting New Patients
Fontana, CA2.4 mi
Dr. Mary Phuong Bui, DO is a health care provider primarily located in Fontana, CA, with other offices in Upland, CA and Pomona, CA(and 11 other locations). View Profile

Dr. Adama Diarra, DO

Internal Medicine
Flexible scheduling
14 years exp
Accepting New Patients
Virtual Visit available
Tigard, OR
"Dr. Adama Diarra was my 84 year old father's PCP. Dr. Diarra was very pro-active in adjusting his medications as his disease sates progressed and his kidney function declined." View Profile

Dr. Virginia Von Schaefer, MD

Oncology
Provided follow-up after the visit
43 years exp
Accepting New Patients
Virtual Visit available
San Clemente, CA
"As I sit here in the VVS MD IV treatment room with 3 other patients, we are all sharing our stories." View Profile

Dr. Ju-An Lin, MD

Cardiovascular Disease
30 years exp
Fontana, CA2.0 mi
"Dr. Lin put me at ease and was able to guide me on a path to recovery. She is very sweet and caring." View Profile

Dr. Patricia Blakely, MD

Nephrology
38 years exp
Accepting New Patients
Fontana, CA2.7 mi
"My primary physician referred me to Dr. Blakely. I found her to be very professional as well as personable." View Profile

Dr. Kareem Zuhair Yahya, MD

Pediatrics
25 years exp
Fontana, CA2.0 mi
Dr. Kareem Zuhair Yahya, MD is a health care provider primarily located in Fontana, CA, with another office in Riverside, CA. He has 25 years of experience. View Profile

Dr. Roopa Chari, MD

Integrative Medicine
Provided follow-up after the visit
31 years exp
Accepting New Patients
Virtual Visit available
Encinitas, CA
"I struggled with eczema on my skin and scalp most of my life. About 3 months before my first appointment with Dr. Chari, my eczema started to flare up very badly. " View Profile

Dr. Raghav Sharma, MD

Cardiovascular Disease
Provided follow-up after the visit
16 years exp
Accepting New Patients
Virtual Visit available
Winter Park, FL
"Outstanding Doctor... easy to talk to and under stand ..." View Profile

Dr. Thomas Jer Chen, MD

Internal Medicine
24 years exp
Fontana, CA2.0 mi
Dr. Thomas Jer Chen, MD is a health care provider primarily located in Fontana, CA, with other offices in Loma Linda, CA and Loma Linda, CA. He has 24 years of experience. View Profile

Dr. Talal A Al-Quraini, MD

Emergency Medicine
54 years exp
Accepting New Patients
FONTANA, CA1.7 mi
"Dr. Alquraini showed was very professional and attentive. He listened to all my explanation and answered all my questions." View Profile

Dr. Dennis Hwang, MD

Critical Care Medicine
27 years exp
Fontana, CA2.0 mi
Dr. Dennis Hwang, MD is a health care provider primarily located in Fontana, CA. He has 27 years of experience. View Profile

Dr. Kumari Maya Jayawardena, MD

Geriatric Medicine
30 years exp
Fontana, CA2.0 mi
Dr. Kumari Maya Jayawardena, MD is a health care provider primarily located in Fontana, CA, with another office in Fontana, CA. She has 30 years of experience. View Profile

Dr. Mazen Noufal, MD

Neurology
23 years exp
Fontana, CA2.0 mi
"Dr. Noufal recently placed a stent in my husband's left vertebral artery. What a caring man and excellent doctor he is!" View Profile

Dr. Joshua A H Imperio, MD

Internal Medicine
37 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Outstanding doctor. Spends a lot of time explaining things." View Profile

Yves Chery, CT, ASCP, APRN, BSN, MSN

Family Medicine
Provided follow-up after the visit
Accepting New Patients
Virtual Visit available
SUWANEE, GA
"The warmest and nicest provider I have ever known. He really does care about his patients and asks me questions about my mom who is also his patient." View Profile

Trisha Khanna, MD, FAAD

Dermatology
Provided follow-up after the visit
8 years exp
Accepting New Patients
Virtual Visit available
Orlando, FL
"Dr. Trisha Khanna was incredibly compassionate and reassuring during a very stressful time for me." View Profile

Dr. Michael Weipong Chien, MD

Allergy & Immunology
37 years exp
Fontana, CA2.0 mi
"Highly recommend!" View Profile

Dr. Jin Wang, MD

Nephrology
44 years exp
FONTANA, CA3.5 mi
Dr. Jin Wang, MD is a health care provider primarily located in FONTANA, CA, with other offices in Chino, CA and FONTANA, CA. He has 44 years of experience. View Profile

Dr. Paul Chen, MD

Internal Medicine
26 years exp
Accepting New Patients
Fontana, CA2.0 mi
"Dr. Chen has been my doctor for a long time and has always made me feel comfortable." View Profile

Dr. Antonio Jimenez Llamas, MD

Family Medicine
47 years exp
Accepting New Patients
Fontana, CA2.7 mi
Dr. Antonio Jimenez Llamas, MD is a health care provider primarily located in Fontana, CA, with another office in Corona, CA. He has 47 years of experience. View Profile

Dr. Les Ilee Liu, MD

Internal Medicine
32 years exp
Fontana, CA2.0 mi
Dr. Les Ilee Liu, MD is a health care provider primarily located in Fontana, CA. He has 32 years of experience. His specialties include Internal Medicine. View Profile

Dr. Patrick Joseph Merrill, MD

Internal Medicine
42 years exp
Fontana, CA2.0 mi
Dr. Patrick Joseph Merrill, MD is a health care provider primarily located in Fontana, CA, with another office in Fontana, CA. He has 42 years of experience. View Profile

Dr. Arman Aryai, MD

Internal Medicine
23 years exp
Fontana, CA2.0 mi
"one of the best physician I have ever had. what makes him different than others is that he spends time reviewing/discussing medical issues and answers all questions." View Profile

Dr. Wanping Hu, MD

Oncology
31 years exp
Accepting New Patients
Fontana, CA2.0 mi
Dr. Wanping Hu, MD is a health care provider primarily located in Fontana, CA, with other offices in Ontario, CA and Fontana, CA. She has 31 years of experience. View Profile

Dr. Jesse Jenchieh Chuang, MD

Nephrology
22 years exp
Fontana, CA2.0 mi
"I saw Dr. Chuang for a little over a year while in treatment for Stage 3 liver disease." View Profile

Dr. Parag Mehtani, MD

Nephrology
21 years exp
Accepting New Patients
Fontana, CA2.7 mi
Dr. Parag Mehtani, MD is a health care provider primarily located in Fontana, CA, with other offices in Rancho Cucamonga, CA and San Bernardino, CA(and 8 other locations). View Profile

Dr. Vahid Muzaffar Berdjis, MD

Internal Medicine
23 years exp
Fontana, CA2.0 mi
Dr. Vahid Muzaffar Berdjis, MD is a health care provider primarily located in Fontana, CA. He has 23 years of experience. His specialties include Internal Medicine. View Profile

Dr. Matthew Wade Allen, MD

Radiation Oncology
23 years exp
Fontana, CA2.0 mi
"This doctor understands his specialty and the care of those patients. Top education and top personality. I was very confident with his care. He gets it." View Profile

Dr. Joe Alan Wohlmuth, MD

Internal Medicine
41 years exp
Fontana, CA2.0 mi
"This doctor is awesome, great energy, really listens. Just saw him today. Really cool, felt like I knew him" View Profile

Dr. Charerntas Toochinda, MD

Internal Medicine
26 years exp
Fontana, CA0.8 mi
"Dr. Toochinda actually listens and cares about you and works WITH you as a patient caring doctor, he doesn't just see your symptoms--he sees YOU." View Profile

Dr. Joseph Paul Paredes, MD

Internal Medicine
39 years exp
Fontana, CA2.0 mi
Dr. Joseph Paul Paredes, MD is a health care provider primarily located in Fontana, CA. He has 39 years of experience. His specialties include Internal Medicine. View Profile

Dr. Ivan Manatad Magnaye, MD

Internal Medicine
24 years exp
Accepting New Patients
Fontana, CA2.0 mi
"He really really listens and is so knowledgeable. Always makes time for me." View Profile

Dr. George Mousa, MD

Internal Medicine
17 years exp
Accepting New Patients
Virtual Visit available
Upland, CA
Dr. George Mousa specializes in preventive care and chronic disease management within Internal Medicine. View Profile

Dr. Alaa Hajal, MD

Internal Medicine
15 years exp
Accepting New Patients
Virtual Visit available
Diamond Bar, CA
Dr. Alaa Hajal is redefining the primary care experience at La Vista Medical Center, serving as a cornerstone of health and vitality for the Diamond Bar community. View Profile

Dr. Daniel Benhuri, MD

Internal Medicine
8 years exp
Accepting New Patients
Virtual Visit available
Beverly Hills, CA
Meet Dr. Daniel Benhuri, MD: Your Primary Care Physician at Dr. Daniel Benhuri, MDAbout Dr. BenhuriDr. Daniel Benhuri, MD, is a board-certified internal medicine and primary care physician dedicated to providing exceptional healthcare to families in Beverly Hills, California. View Profile

Karthikeyan Viswanathan, DO

Internal Medicine
12 years exp
Accepting New Patients
Virtual Visit available
Los Altos, CA
Dr. Karthikeyan Viswanathan, DO, is a physician who brings a unique perspective to medicine through his diverse professional background. View Profile

Dr. Tooba Rehman, MD

Internal Medicine
16 years exp
Accepting New Patients
Virtual Visit available
Katy, TX
Dr. Tooba Rehman is a board-certified Internal Medicine physician and the founder of Doc & Me Health, a direct primary care practice built on a membership model that replaces rushed, insurance-driven visits with unhurried, relationship-first care. View Profile

Dr. Tracy Ching-Hue Burton

Pediatrics
18 years exp
Accepting New Patients
Virtual Visit available
Franklin, TN
Dr. Tracy Burton is a Board-Certified Pediatrician with over 10 years of experience providing expert care to children and families as the Chief Medical Officer at As You Are. View Profile

Dr. Tamar Heisler

Pediatrics
18 years exp
Accepting New Patients
Virtual Visit available
Franklin, TN
Dr. Tami Heisler is a Board-Certified Pediatrician with over 10 years of experience providing compassionate and personalized care to children and their families at As You Are. View Profile

Bonni London, MS, RDN, LDN

Registered Dietitian
28 years exp
Accepting New Patients
Virtual Visit available
Sarasota, FL
ACCEPTING NEW PATIENTS FOR TELEHEALTH SERVICES in NY, CA, AZ, FL & COACCEPTING IN PERSON VISITS in Sarasota & Lakewood Ranch communities in FLORIDABonni London, RDN, is a registered dietitian nutritionist and founder of London Wellness, holding a Masters degree in Clinical Nutrition from NYU. View Profile

Dr. Asha Sharma, MD

Internal Medicine
28 years exp
Fontana, CA2.0 mi
Dr. Asha Sharma, MD is a health care provider primarily located in Fontana, CA. She has 28 years of experience. Her specialties include Internal Medicine. View Profile

Dr. Sena Rae St John, DO

Public Health & General Preventive Medicine
Fontana, CA2.0 mi
"Dr St.john is the best doctor I've ever had,she listens takes her time with her patients and works together with them as a team." View Profile

Dr. Abbid Shah, MD

Hospital Medicine
23 years exp
Fontana, CA2.0 mi
"Dr. Shah attended me at Presbyterian Hospital." View Profile

What is an Internist and How Can They Help You?

An internist specializes in adult medicine, providing comprehensive care for complex medical conditions. These physicians excel at diagnosing challenging cases and managing patients with multiple organ system involvement.

Internists complete medical school and a three-year internal medicine residency. Many pursue subspecialty fellowship training in fields such as cardiology, gastroenterology, or infectious disease, though general internists maintain broad adult medical expertise.

An Internist's clinical practice encompasses:

  • Concentrates on adult patient populations and multi-system medical management
  • Conducts medical history reviews, physical assessments, diagnostic test interpretation
  • Manages metabolic disorders, cardiovascular disease, pulmonary conditions, infectious processes, and immune-mediated diseases
  • Employs pharmaceutical management, preventive medicine, health counseling, and specialist coordination
  • Alternative titles: adult medicine specialist, general internist, MD, DO

Frequently Asked Questions

What's the best way to search for an Internist in Fontana who accepts my health insurance?
Navigate to the insurance filter located at the top of the search page and select your health plan. This will display only Internists in Fontana who are in-network with your carrier. For additional confirmation, visit each doctor's profile or reach out to their office by phone.
Where can I find Internists in Fontana who offer virtual appointments?
Select the "Virtual Visit" filter at the top of the search page to see Internists providing telehealth services in Fontana. Check each doctor's profile for video visit options and online scheduling availability. You may also call their office to set up a remote consultation.
What's the easiest way to locate highly-rated Internists in Fontana?
Use the "Ratings" filter at the top of the search page to filter results by the average star rating. Browse individual profiles to see patient reviews and ratings in detail. When comparing Internists, look at both the average star rating and how many patients have submitted reviews.
Is it possible to schedule a same-day visit with an Internist in Fontana?
Visit individual doctor profiles to see their current scheduling availability in Fontana. If you don't see same-day openings listed online, try calling their office—walk-in times may be available that don't appear on the website.
Which Internists in Fontana have the shortest wait times?
Review the Ratings & Reviews card on each provider's profile to see their average wait time in Fontana. This helps you find an Internist that doesn’t make their patients wait too long.
Can I schedule appointments with Internists in Fontana without calling?
Search for Internists who have "Book Online" or "Request Now" options on their profiles. Click these buttons to access online appointment scheduling. If a provider doesn't offer web-based booking, their phone number will be available for traditional scheduling.
How do I locate an Internist in Fontana with evening or weekend hours?
Check the Locations card on each profile to view office hours for Internists in Fontana. This helps you find providers with non-traditional availability. For the most accurate information about extended availability, call the office directly.
How do I leave feedback about my appointment with an Internist in Fontana?
Go to your doctor's profile page and click the "Leave a Review" button or link. You can share your rating and write about your experience. Patient reviews like yours help others in the community choose the right Internist.
How can I locate an Internist in Fontana who is fluent in my preferred language?
Review the language information displayed on individual profiles for Internists. If this information isn't available online, contact the office directly to ask about the doctor's language capabilities or whether interpreters are available.
How do I search for an Internist in Fontana who works at a particular hospital or medical center?
Check the "Hospital Affiliation" and "Locations" sections on each provider's profile to see where Internists practice. You can also enter a specific hospital or medical group name into the search tool to find Internists who work there.

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.