The 20 Best Protein Deficiency Doctors Near Me in Mission Viejo, CA

Find the Top Protein Deficiency Experts and Specialists

The 20 Best Protein Deficiency Doctors near Mission Viejo, CA

Last Updated: 02/22/2026

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MediFind found 77 doctor with experience in Protein Deficiency near Mission Viejo, CA. Of these, 68 are Experienced, 8 are Advanced and 1 are Distinguished.

Location
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77 providers found
    Advanced in Protein Deficiency
    Internal Medicine
    Advanced in Protein Deficiency
    Internal Medicine

    Hospitalist Associates Of Saddleback

    23961 Calle De La Magdalena Ste 426, 
    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ali Tabatabai is a primary care provider, practicing in Internal Medicine in Laguna Hills, California. Dr. Tabatabai is rated as an Advanced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Acute Respiratory Distress Syndrome (ARDS), Macrophagic Myofasciitis, Myositis, Narcolepsy, and Heart Transplant. Dr. Tabatabai is currently accepting new patients.

    Experienced in Protein Deficiency
    Gastroenterology
    Experienced in Protein Deficiency
    Gastroenterology
    27799 Medical Center Road, Suite 320, 
    Mission Viejo, CA 
     (1.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Douglas Nguyen is a Gastroenterologist in Mission Viejo, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Hemorrhagic Proctocolitis, Colonoscopy, and Endoscopy. Dr. Nguyen is currently accepting new patients.

    Experienced in Protein Deficiency
    Endocrinology
    Experienced in Protein Deficiency
    Endocrinology
    26800 Crown Valley Parkway, Suite 230, 
    Mission Viejo, CA 
     (2.4 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michael Truong is an Endocrinologist in Mission Viejo, California. Dr. Truong is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Osteopenia, Melorheostosis with Osteopoikilosis, Melorheostosis, and Postmenopausal Osteoporosis.

    Learn about our expert tiers
    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    MemorialCare Medical Group 55+ (Laguna Woods)

    24268 El Toro Rd, 
    Laguna Woods, CA 
     (3.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Kien-an Duong is a primary care provider, practicing in Internal Medicine in Laguna Woods, California. Dr. Duong is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), Osteomyelitis in Children, High Cholesterol, and Cirrhosis. Dr. Duong is currently accepting new patients.

    Advanced in Protein Deficiency
    Gastroenterology
    Advanced in Protein Deficiency
    Gastroenterology

    Mj Medical Group Inc

    26501 Rancho Pkwy S, 
    Lake Forest, CA 
     (3.7 miles away)
    Experience:
    41+ years
    Languages Spoken:
    English
    Offers Telehealth

    Mohammad Jamal is a Gastroenterologist in Lake Forest, California. Dr. Jamal has been practicing medicine for over 41 years and is rated as an Advanced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Gastrointestinal Bleeding, Gallstones, Choledocholithiasis, Endoscopy, and Gastrectomy.

    Advanced in Protein Deficiency
    Gastroenterology
    Advanced in Protein Deficiency
    Gastroenterology

    Mj Medical Group Inc

    26501 Rancho Pkwy S, 
    Lake Forest, CA 
     (3.7 miles away)
    Experience:
    23+ years
    Languages Spoken:
    English

    Mladen Jecmenica is a Gastroenterologist in Lake Forest, California. Dr. Jecmenica has been practicing medicine for over 23 years and is rated as an Advanced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Gastrointestinal Bleeding, Gastroesophageal Reflux Disease (GERD), Hiatal Hernia, Gastrostomy, and Endoscopy.

    Advanced in Protein Deficiency
    Gastroenterology
    Advanced in Protein Deficiency
    Gastroenterology

    Mj Medical Group Inc

    26501 Rancho Pkwy S, 
    Lake Forest, CA 
     (3.7 miles away)
    Experience:
    12+ years
    Languages Spoken:
    English

    Eric Szu is a Gastroenterologist in Lake Forest, California. Dr. Szu has been practicing medicine for over 12 years and is rated as an Advanced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Gastrointestinal Bleeding, Gastritis, Hereditary Pancreatitis, Gastrectomy, and Colonoscopy.

    Advanced in Protein Deficiency
    Advanced in Protein Deficiency

    Housecall Doctors Medical Group

    23181 Verdugo Dr, 
    Laguna Hills, CA 
     (4.6 miles away)
    Experience:
    49+ years
    Languages Spoken:
    English

    Norman Vinn is a primary care provider, practicing in Geriatrics in Laguna Hills, California. Dr. Vinn has been practicing medicine for over 49 years and is rated as an Advanced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), Hyperaldosteronism, Familial Hyperaldosteronism, and Apparent Mineralocorticoid Excess.

    Experienced in Protein Deficiency
    General Practice
    Experienced in Protein Deficiency
    General Practice

    Marjan Pedarsani, MD

    Mission Viejo, CA 
     (1.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Marjan Pedarsani is a primary care provider, practicing in General Practice in Mission Viejo, California. Dr. Pedarsani is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Osteomyelitis in Children, Infant Hyperglycemia, Type 2 Diabetes (T2D), and High Cholesterol.

    Experienced in Protein Deficiency
    General Practice
    Experienced in Protein Deficiency
    General Practice

    Patrick Thompson, MD

    26538 Moulton Pkwy Ste 38E, 
    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Patrick Thompson is a primary care provider, practicing in General Practice in Laguna Hills, California. Dr. Thompson is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Labyrinthitis, Familial Combined Hyperlipidemia, Xanthoma, and High Cholesterol.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    Nermine Morcos MD Inc

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    27+ years
    Languages Spoken:
    English

    Nermine Morcos is a primary care provider, practicing in Internal Medicine in Laguna Hills, California. Dr. Morcos has been practicing medicine for over 27 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Purpura, Autoerythrocyte Sensitivity, Gardner-Diamond Syndrome, and Anal Cancer.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    Homer Kam Yun Lew Do A Medical Corp

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English

    Homer Lew is a primary care provider, practicing in Internal Medicine in Laguna Hills, California. Dr. Lew has been practicing medicine for over 30 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and High Cholesterol.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    Optumcare Medical Group

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    25+ years
    Languages Spoken:
    English

    Mohana Kulkarni is an Internal Medicine provider in Laguna Hills, California. Dr. Kulkarni has been practicing medicine for over 25 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Protein Deficiency and Fractured Spine.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    Saddleback Medical Group

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Maziar Zamani is a primary care provider, practicing in Internal Medicine in Laguna Hills, California. Dr. Zamani has been practicing medicine for over 30 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Acute Kidney Failure, Hypothyroidism, Glucocorticoid-Remediable Aldosteronism, Gastrostomy, and Pacemaker Implantation. Dr. Zamani is currently accepting new patients.

    Experienced in Protein Deficiency
    General Practice
    Experienced in Protein Deficiency
    General Practice

    Michael L. Chang, DO

    26538 Moulton Pkwy Ste 38E, 
    Laguna Hills, CA 
     (2.3 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michael Chang is a primary care provider, practicing in General Practice in Laguna Hills, California. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are Cerebellar Multiple System Atrophy, Hepatocerebral Degeneration, Cerebellar Degeneration, and Osteomyelitis in Children.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    Access Community Health Center

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    12+ years
    Languages Spoken:
    English

    Gail Abcede is a primary care provider, practicing in Internal Medicine in Laguna Hills, California. Dr. Abcede has been practicing medicine for over 12 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Schizoaffective Disorder, Sepsis, Urinary Tract Infection in Children, and Urinary Tract Infection (UTI).

    Experienced in Protein Deficiency
    Endocrinology | Internal Medicine
    Experienced in Protein Deficiency
    Endocrinology | Internal Medicine

    Aco Saddleback

    Laguna Hills, CA 
     (2.3 miles away)
    Experience:
    19+ years
    Languages Spoken:
    English

    Lei Win is a primary care provider, practicing in Internal Medicine and Endocrinology in Laguna Hills, California. Dr. Win has been practicing medicine for over 19 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Acute Kidney Failure, Pericarditis, Chronic Kidney Disease, Low Blood Pressure, and Endoscopy.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine
    26800 Crown Valley Parkway, Suite 315, 
    Mission Viejo, CA 
     (2.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Khadija Mayet is a primary care provider, practicing in Internal Medicine in Mission Viejo, California. Dr. Mayet is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Erythromelalgia, Chronic Cough, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension. Dr. Mayet is currently accepting new patients.

    Experienced in Protein Deficiency
    Family Medicine
    Experienced in Protein Deficiency
    Family Medicine

    Optum - Mission Viejo

    26991 Crown Valley Pkwy, 
    Mission Viejo, CA 
     (2.5 miles away)
    Experience:
    38+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Ronald Richmond is a primary care provider, practicing in Family Medicine in Mission Viejo, California. Dr. Richmond has been practicing medicine for over 38 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. His top areas of expertise are High Cholesterol, Sciatica, Insomnia, and Glucocorticoid-Remediable Aldosteronism. Dr. Richmond is currently accepting new patients.

    Experienced in Protein Deficiency
    Internal Medicine
    Experienced in Protein Deficiency
    Internal Medicine

    Joanna Kopacz

    24411 Health Center Dr, 
    Laguna Hills, CA 
     (3.1 miles away)
    Experience:
    22+ years
    Languages Spoken:
    English

    Joanna Kopacz is an Internal Medicine provider in Laguna Hills, California. Dr. Kopacz has been practicing medicine for over 22 years and is rated as an Experienced provider by MediFind in the treatment of Protein Deficiency. Her top areas of expertise are Sepsis, Strep Throat, Pseudomonas Stutzeri Infections, and Bacterial Gastroenteritis.

    Showing 1-20 of 77

    Last Updated: 02/22/2026

    When should I see a Protein Deficiency doctor near Mission Viejo, 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 Protein Deficiency doctor near Mission Viejo, 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 Protein Deficiency doctors near Mission Viejo, 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 Protein Deficiency doctors near Mission Viejo, 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 Protein Deficiency doctor near Mission Viejo, 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 Protein Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Protein Deficiency 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 Protein Deficiency doctor near Mission Viejo, 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 Protein Deficiency 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 Protein Deficiency 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 Protein Deficiency doctors near Mission Viejo, CA?

    Look for the filter feature on the left side of the Protein Deficiency 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 Protein Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Protein Deficiency 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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