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    Last Updated: 10/30/2025

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    MediFind found 257 doctor with experience in Homocystinuria near California, US. Of these, 187 are Experienced, 66 are Advanced and 4 are Distinguished.

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    LocationClose
    257 providers found
      Experienced in Homocystinuria
      Hematology Oncology | Hematology | Oncology
      Experienced in Homocystinuria
      Hematology Oncology | Hematology | Oncology

      City Of Hope Medical Foundation

      1043 Elm Ave, Suite 104, 
      Long Beach, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Krushangi Patel is a Hematologist Oncology specialist and a Hematologist in Long Beach, California. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Homocystinuria. Her top areas of expertise are Agranulocytosis, Chronic Familial Neutropenia, Lung Adenocarcinoma, and EGFR Positive Lung Cancer.

      Distinguished in Homocystinuria
      Internal Medicine
      Distinguished in Homocystinuria
      Internal Medicine
      744 Broadway, Suite 100, 
      El Cajon, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Robin Spiering is a primary care provider, practicing in Internal Medicine in El Cajon, California. Dr. Spiering is rated as a Distinguished provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Hypermethioninemia, Sulfite Oxidase Deficiency, Methylmalonic Acidemia with Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

      What does Elite, Distinguished, Advanced, Experienced mean?
      Distinguished in Homocystinuria
      General Practice
      Distinguished in Homocystinuria
      General Practice

      Rita R Ellithorpe MD Inc

      13422 Newport Ave, Suite L, 
      Tustin, CA 
      Experience:
      43+ years
      Languages Spoken:
      English
      Offers Telehealth

      Rita Ellithorpe is a primary care provider, practicing in General Practice in Tustin, California. Dr. Ellithorpe has been practicing medicine for over 43 years and is rated as a Distinguished provider by MediFind in the treatment of Homocystinuria. Her top areas of expertise are Heavy Metal Poisoning, Menopause, Homocystinuria, and Methylmalonic Acidemia with Homocystinuria.

      Learn about our expert tiers
      Distinguished in Homocystinuria
      Family Medicine | Internal Medicine
      Distinguished in Homocystinuria
      Family Medicine | Internal Medicine

      Erik Lundquist MD Inc

      27450 Ynez Rd, Suite 100, 
      Temecula, CA 
      Experience:
      17+ years
      Languages Spoken:
      English
      Offers Telehealth

      Jonathan Vellinga is a primary care provider, practicing in Family Medicine and Internal Medicine in Temecula, California. Dr. Vellinga has been practicing medicine for over 17 years and is rated as a Distinguished provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Sulfite Oxidase Deficiency, Hypermethioninemia, Methylmalonic Acidemia with Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

      Distinguished in Homocystinuria
      Family Medicine
      Distinguished in Homocystinuria
      Family Medicine

      Simi Doctors Medical & Aesthetics

      2840 E Los Angeles Ave, 
      Simi Valley, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Daniel Ghiyam is a primary care provider, practicing in Family Medicine in Simi Valley, California. Dr. Ghiyam is rated as a Distinguished provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Methylmalonic Acidemia with Homocystinuria, Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Familial Combined Hyperlipidemia.

      Experienced in Homocystinuria
      Hematology Oncology | Hematology | Oncology
      Experienced in Homocystinuria
      Hematology Oncology | Hematology | Oncology

      Complete Care Community Health Center

      Los Angeles, CA 
      Languages Spoken:
      English

      Ghassan Al-Jazayrly is a Hematologist Oncology specialist and a Hematologist in Los Angeles, California. Dr. Al-Jazayrly is rated as an Experienced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Anemia, Paget Disease of the Breast, Small Cell Lung Cancer (SCLC), and Lung Cancer.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine

      Complete Care Family Medical Clinic

      1231 N Avalon Blvd, 
      Wilmington, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Homan Siman is a primary care provider, practicing in Internal Medicine in Wilmington, California. Dr. Siman is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Methylmalonic Acidemia with Homocystinuria, Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Cirrhosis.

      Advanced in Homocystinuria
      Family Medicine
      Advanced in Homocystinuria
      Family Medicine
      310 N Indian Hill Blvd # 240, 
      Claremont, CA 
      Languages Spoken:
      English

      Yen Lai is a primary care provider, practicing in Family Medicine in Claremont, California. Dr. Lai is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. Her top areas of expertise are Aromatase Deficiency, Renal Hypomagnesemia Type 2, Methylmalonic Acidemia with Homocystinuria, and Homocystinuria.

      Advanced in Homocystinuria
      Family Medicine
      Advanced in Homocystinuria
      Family Medicine
      108 Lynch Creek Way, Suite 4, 
      Petaluma, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Nikola Lozanov is a primary care provider, practicing in Family Medicine in Petaluma, California. Dr. Lozanov is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Methylmalonic Acidemia with Homocystinuria, Methylmalonic Acidemia, Methylmalonyl Coenzyme A Mutase Deficiency, and Homocystinuria.

      Advanced in Homocystinuria
      Family Medicine | Geriatrics
      Advanced in Homocystinuria
      Family Medicine | Geriatrics

      Chinese Hospital Association

      1800 31st Ave, 
      San Francisco, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Frank Chen is a primary care provider, practicing in Family Medicine and Geriatrics in San Francisco, California. Dr. Chen is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Methylmalonic Acidemia, Methylmalonyl Coenzyme A Mutase Deficiency, Methylmalonic Acidemia with Homocystinuria, and Homocystinuria.

      Advanced in Homocystinuria
      Family Medicine
      Advanced in Homocystinuria
      Family Medicine
      1910 Orange Tree Ln, Suite 320, 
      Redlands, CA 
      Languages Spoken:
      English

      William Angkadjaja is a primary care provider, practicing in Family Medicine in Redlands, California. Dr. Angkadjaja is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Apparent Mineralocorticoid Excess.

      Advanced in Homocystinuria
      General Practice
      Advanced in Homocystinuria
      General Practice

      Complete Care Family Medical Clinic

      1231 N Avalon Blvd, 
      Wilmington, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Homayoun Siman is a primary care provider, practicing in General Practice in Wilmington, California. Dr. Siman is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, Hypertensive Heart Disease, and Osteotomy.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine
      845 East Chapman Avenue, 
      Orange, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Thomas Hryniewicki is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Hryniewicki is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Autoerythrocyte Sensitivity, Purpura, Gardner-Diamond Syndrome, and Cirrhosis.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine

      Hsi Services Inc

      255 Terracina Blvd, Suite 105, 
      Redlands, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Mohamed Nassar is a primary care provider, practicing in Internal Medicine in Redlands, California. Dr. Nassar is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, Endoscopy, and Ureteroscopy.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine
      255 Terracina Blvd, Suite 207, 
      Redlands, CA 
      Languages Spoken:
      English

      Rafael Villarosa is a primary care provider, practicing in Internal Medicine in Redlands, California. Dr. Villarosa is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Chronic Cough.

      Advanced in Homocystinuria
      Family Medicine
      Advanced in Homocystinuria
      Family Medicine

      Cucamonga Valley Medical Group Inc

      16465 Sierra Lakes Pkwy, Suite 300, 
      Fontana, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Jesse Dominguez is a primary care provider, practicing in Family Medicine in Fontana, California. Dr. Dominguez is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and Alcoholic Neuropathy.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine
      999 S Fairmont Ave, Suite 135, 
      Lodi, CA 
      Languages Spoken:
      English

      James Hoff is a primary care provider, practicing in Internal Medicine in Lodi, California. Dr. Hoff is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Degos Disease, Vasculitis, Inborn Amino Acid Metabolism Disorder, and Homocystinuria.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine

      Chinese Hospital Association

      845 Jackson St, 
      San Francisco, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Anderson Eng is a primary care provider, practicing in Internal Medicine in San Francisco, California. Dr. Eng is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Jaundice, Hepatitis, Methylmalonic Acidemia, and Methylmalonyl Coenzyme A Mutase Deficiency.

      Advanced in Homocystinuria
      Internal Medicine
      Advanced in Homocystinuria
      Internal Medicine
      6815 Fair Oaks Blvd, 
      Carmichael, CA 
      Languages Spoken:
      English, French, Mandarin, Spanish
      Offers Telehealth

      Katherine Bisharat is a primary care provider, practicing in Internal Medicine in Carmichael, California. Dr. Bisharat is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. Her top areas of expertise are Degos Disease, Methylmalonic Acidemia with Homocystinuria, Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

      Advanced in Homocystinuria
      Family Medicine
      Advanced in Homocystinuria
      Family Medicine
      420 South Bristol Street, 
      Santa Ana, CA 
      Languages Spoken:
      English

      Jose Cilliani is a primary care provider, practicing in Family Medicine in Santa Ana, California. Dr. Cilliani is rated as an Advanced provider by MediFind in the treatment of Homocystinuria. His top areas of expertise are Vitamin D Deficiency, Osteomyelitis in Children, Homocystinuria, and Methylmalonic Acidemia with Homocystinuria.

      Showing 1-20 of 257

      Last Updated: 10/30/2025

      What is the definition of Homocystinuria?

      Homocystinuria is a genetic disorder that affects the metabolism of the amino acid methionine. Amino acids are the building blocks of all proteins in the body.

      When should I see a Homocystinuria doctor in California, US?

      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 Homocystinuria doctor in California, US?

      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 Homocystinuria doctors in California, US?

      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 Homocystinuria doctors in California, US?

      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 Homocystinuria doctor in California, US?

      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 Homocystinuria doctor search results page. 

      Why is it important to get a second opinion from a different Homocystinuria 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 Homocystinuria doctor in California, US?

      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 Homocystinuria 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 Homocystinuria 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 Homocystinuria doctors in California, US?

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

      Look for the filter feature on the left-side of the Homocystinuria 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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