The 20 Best Retroperitoneal Inflammation Doctors Near Me in Upland, CA

Find the Top Retroperitoneal Inflammation Experts and Specialists

The 20 Best Retroperitoneal Inflammation Doctors near Upland, CA

Last Updated: 02/22/2026

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MediFind found 100 doctor with experience in Retroperitoneal Inflammation near Upland, CA. Of these, 89 are Experienced and 11 are Advanced.

Location
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100 providers found
    Experienced in Retroperitoneal Inflammation
    Radiology
    Experienced in Retroperitoneal Inflammation
    Radiology

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    Peter Yoo is a Radiologist in Upland, California. Dr. Yoo is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Pleurisy, Gallbladder Disease, Ascites, Pancreaticoduodenectomy, and Bone Marrow Aspiration.

    Experienced in Retroperitoneal Inflammation
    Experienced in Retroperitoneal Inflammation

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    Stuart Berry is a Radiologist in Upland, California. Dr. Berry is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Ascites, Pleurisy, Pleural Effusion, Bone Marrow Aspiration, and Stent Placement.

    Experienced in Retroperitoneal Inflammation
    Neuroradiology
    Experienced in Retroperitoneal Inflammation
    Neuroradiology

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English

    Andrew Ong is a Neuroradiologist in Upland, California. Dr. Ong has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Ectopic Pregnancy, Pleurisy, Gallbladder Disease, and Pleural Effusion.

    Learn about our expert tiers
    Experienced in Retroperitoneal Inflammation
    Experienced in Retroperitoneal Inflammation

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    Reza Pakdaman is a Radiologist in Upland, California. Dr. Pakdaman is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Pleurisy, Gallbladder Disease, Pleural Effusion, Fecal Impaction, and Osteotomy.

    Experienced in Retroperitoneal Inflammation
    Radiology
    Experienced in Retroperitoneal Inflammation
    Radiology

    San Antonio Regional Hospital

    999 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    David Dang is a Radiologist in Upland, California. Dr. Dang is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Pleurisy, Gallbladder Disease, Pleural Effusion, and Tenosynovitis.

    Experienced in Retroperitoneal Inflammation
    Radiology
    Experienced in Retroperitoneal Inflammation
    Radiology

    Office

    8599 Haven Ave Ste 300, 
    Rancho Cucamonga, CA 
     (4.0 miles away)
    Languages Spoken:
    English

    Thomas Lin is a Radiologist in Rancho Cucamonga, California. Dr. Lin is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Gallbladder Disease, Visceromegaly, Non-Alcoholic Fatty Liver Disease, and Hepatocerebral Degeneration.

    Advanced in Retroperitoneal Inflammation
    General Surgery
    Advanced in Retroperitoneal Inflammation
    General Surgery

    Upland Surgical Associates

    901 San Bernardino Rd, 
    Upland, CA 
     (0.6 miles away)
    Experience:
    28+ years
    Languages Spoken:
    English

    Donna Dudziak is a General Surgeon in Upland, California. Dr. Dudziak has been practicing medicine for over 28 years and is rated as an Advanced provider by MediFind in the treatment of Retroperitoneal Inflammation. Her top areas of expertise are Hernia, Gallbladder Disease, Cholecystitis, Hernia Surgery, and Colostomy.

    Advanced in Retroperitoneal Inflammation
    General Surgery
    Advanced in Retroperitoneal Inflammation
    General Surgery

    Upland Surgical Associates

    811 E 11th St, 
    Upland, CA 
     (0.6 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English

    Adam Sugihara is a General Surgeon in Upland, California. Dr. Sugihara has been practicing medicine for over 17 years and is rated as an Advanced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Cellulitis, Cholecystitis, Retroperitoneal Inflammation, Hernia Surgery, and Gastrostomy.

    Advanced in Retroperitoneal Inflammation
    General Surgery
    Advanced in Retroperitoneal Inflammation
    General Surgery

    Upland Surgical Associates

    510 N 13th Ave, 
    Upland, CA 
     (0.9 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English

    Bryce Beseth is a General Surgeon in Upland, California. Dr. Beseth has been practicing medicine for over 30 years and is rated as an Advanced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Gangrene, Choledocholithiasis, Necrosis, Hernia Surgery, and Colostomy.

    Advanced in Retroperitoneal Inflammation
    Internal Medicine
    Advanced in Retroperitoneal Inflammation
    Internal Medicine

    Premiere Medical Group Of California

    901 San Bernardino Rd Ste 101, 
    Upland, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Ythanh Nguyen is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Nguyen is rated as an Advanced provider by MediFind in the treatment of Retroperitoneal Inflammation. Her top areas of expertise are Peptic Ulcer, Sepsis, Necrosis, Endoscopy, and Colonoscopy.

    Advanced in Retroperitoneal Inflammation
    General Surgery | Transplant Surgery
    Advanced in Retroperitoneal Inflammation
    General Surgery | Transplant Surgery

    Ali Abidali Do Professional Medical Corporation

    500 N Euclid Ave, 
    Upland, CA 
     (0.9 miles away)
    Languages Spoken:
    English, Arabic
    Accepting New Patients

    Ali Abidali is a General Surgeon and a Transplant Surgeon in Upland, California. Dr. Abidali is rated as an Advanced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Cholecystitis, Ogilvie Syndrome, Gastrointestinal Perforation, and Gallbladder Disease. Dr. Abidali is currently accepting new patients.

    Advanced in Retroperitoneal Inflammation
    General Surgery
    Advanced in Retroperitoneal Inflammation
    General Surgery

    Anthony S. Oh, MD A Medical Corporation

    4950 San Bernardino St, 
    Montclair, CA 
     (3.1 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English

    Anthony Oh is a General Surgeon in Montclair, California. Dr. Oh has been practicing medicine for over 30 years and is rated as an Advanced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Gallstones, Choledocholithiasis, Gallbladder Disease, Colostomy, and Gastrostomy.

    Experienced in Retroperitoneal Inflammation
    Family Medicine
    Experienced in Retroperitoneal Inflammation
    Family Medicine

    S. M. Hammad Rizvi, M.D., Inc.

    901 San Bernardino Rd, 
    Upland, CA 
     (0.6 miles away)
    Experience:
    25+ years
    Languages Spoken:
    English

    Syed Rizvi is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Rizvi has been practicing medicine for over 25 years and is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Hypertensive Heart Disease, Multisystem Inflammatory Syndrome in Children (MIS-C), COVID-19, Gastrostomy, and Endoscopy.

    Experienced in Retroperitoneal Inflammation
    Family Medicine
    Experienced in Retroperitoneal Inflammation
    Family Medicine

    ProHealth Partners A Medical Group Inc.

    1042 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    Azhar Majeed is a primary care provider, practicing in Family Medicine in Upland, California. Dr. Majeed is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Hypertensive Heart Disease, Acute Kidney Failure, COVID-19, Gastrostomy, and Endoscopy.

    Experienced in Retroperitoneal Inflammation
    Internal Medicine
    Experienced in Retroperitoneal Inflammation
    Internal Medicine

    ProHealth Partners A Medical Group Inc.

    1042 San Bernardino Rd, 
    Upland, CA 
     (0.7 miles away)
    Languages Spoken:
    English

    Mansurur Khan is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Khan is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Renovascular Hypertension, Stroke, Hypertensive Heart Disease, Gastrostomy, and Endoscopy.

    Experienced in Retroperitoneal Inflammation
    Internal Medicine
    Experienced in Retroperitoneal Inflammation
    Internal Medicine

    Hadi, Ghassan, E., M.D., Inc.

    1060 E Foothill Blvd, 
    Upland, CA 
     (0.9 miles away)
    Experience:
    38+ years
    Languages Spoken:
    English
    Offers Telehealth

    Ghassan Hadi is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Hadi has been practicing medicine for over 38 years and is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Acute Kidney Failure, End-Stage Renal Disease (ESRD), Sepsis, Gastrostomy, and Endoscopy.

    Experienced in Retroperitoneal Inflammation
    Surgical Oncology
    Experienced in Retroperitoneal Inflammation
    Surgical Oncology

    City Of Hope Upland

    1100 San Bernardino Rd Ste 1100, 
    Upland, CA 
     (0.9 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Bradford Kim is a Surgical Oncologist in Upland, California. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Gastrointestinal Stromal Tumor, Stomach Cancer, Pancreatic Cancer, Hepatectomy, and Pancreaticoduodenectomy.

    Experienced in Retroperitoneal Inflammation
    General Surgery
    Experienced in Retroperitoneal Inflammation
    General Surgery
    901 San Bernardino Rd Suite 301, 
    Upland, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Irene Houari is a General Surgeon in Upland, California. Dr. Houari is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. Her top areas of expertise are Gastrointestinal Perforation, Gallbladder Disease, Gallstones, Gastrostomy, and Lymphadenectomy.

    Experienced in Retroperitoneal Inflammation
    Internal Medicine
    Experienced in Retroperitoneal Inflammation
    Internal Medicine

    San Antonio Regional Medical Group Inc.

    901 San Bernardino Rd Ste 300, 
    Upland, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Ai-jen Wang is a primary care provider, practicing in Internal Medicine in Upland, California. Dr. Wang is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. Her top areas of expertise are Necrosis, Sepsis, Atypical Pneumonia, Colonoscopy, and Endoscopy.

    Experienced in Retroperitoneal Inflammation
    General Surgery
    Experienced in Retroperitoneal Inflammation
    General Surgery
    754 N Mountain Ave, 
    Ontario, CA 
     (2.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Stewart Rendon is a General Surgeon in Ontario, California. Dr. Rendon is rated as an Experienced provider by MediFind in the treatment of Retroperitoneal Inflammation. His top areas of expertise are Hiatal Hernia, Congenital Diaphragmatic Hernia, Obesity, Sleeve Gastrectomy, and Gastrectomy. Dr. Rendon is currently accepting new patients.

    Showing 1-20 of 100

    Last Updated: 02/22/2026

    What is the definition of Retroperitoneal Inflammation?

    Retroperitoneal inflammation causes swelling that occurs in the retroperitoneal space. Over time, it can lead to a mass behind the abdomen and its contents called retroperitoneal fibrosis.

    The retroperitoneal space is in front of the lower back and behind the abdominal lining (peritoneum). Organs in this space include the:

    • Kidneys
    • Lymph nodes
    • Pancreas
    • Ureters
    • Adrenal glands
    • Esophagus
    • Abdominal aorta
    • Parts of the colon and stomach
    • Rectum

    When should I see a Retroperitoneal Inflammation doctor near Upland, CA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Retroperitoneal Inflammation doctor near Upland, CA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Retroperitoneal Inflammation doctors near Upland, CA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Retroperitoneal Inflammation doctors near Upland, CA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Retroperitoneal Inflammation doctor near Upland, CA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Retroperitoneal Inflammation doctor search results page. 

    Why is it important to get a second opinion from a different Retroperitoneal Inflammation doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Retroperitoneal Inflammation doctor near Upland, CA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Retroperitoneal Inflammation doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Retroperitoneal Inflammation doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Retroperitoneal Inflammation doctors near Upland, CA?

    Look for the filter feature on the left side of the Retroperitoneal Inflammation doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Retroperitoneal Inflammation doctor that offers video calls?

    Look for the filter feature on the left-side of the Retroperitoneal Inflammation doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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