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    Last Updated: 01/09/2026

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    MediFind found 290 doctor with experience in Methylmalonic Acidemia with Homocystinuria near California, US. Of these, 214 are Experienced, 71 are Advanced and 5 are Distinguished.

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    290 providers found
      Distinguished in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Distinguished in Methylmalonic Acidemia with 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 a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Methylmalonic Acidemia with Homocystinuria, Methylmalonyl Coenzyme A Mutase Deficiency, Methylmalonic Acidemia, and Homocystinuria.

      Frank Tortorice
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      101 South San Mateo Dr., Suite 303, 
      San Mateo, CA 
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Frank Tortorice is a primary care provider, practicing in Internal Medicine in San Mateo, California. Dr. Tortorice is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Hypermethioninemia, Sulfite Oxidase Deficiency, Methylmalonic Acidemia with Homocystinuria, and Inborn Amino Acid Metabolism Disorder. Dr. Tortorice is currently accepting new patients.

      Experienced in Methylmalonic Acidemia with Homocystinuria
      Hematology Oncology | Hematology | Oncology
      Experienced in Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria. Her top areas of expertise are Agranulocytosis, Chronic Familial Neutropenia, Small Cell Lung Cancer (SCLC), and Lung Adenocarcinoma.

      Learn about our expert tiers
      Distinguished in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Distinguished in Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Hypermethioninemia, Sulfite Oxidase Deficiency, Methylmalonic Acidemia with Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

      Distinguished in Methylmalonic Acidemia with Homocystinuria
      Family Medicine | Internal Medicine
      Distinguished in Methylmalonic Acidemia with Homocystinuria
      Family Medicine | Internal Medicine

      Erik Lundquist MD Inc

      27450 Ynez Rd, Suite 100, 
      Temecula, CA 
      Experience:
      18+ 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 18 years and is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Hypermethioninemia, Sulfite Oxidase Deficiency, Methylmalonic Acidemia with Homocystinuria, and Inborn Amino Acid Metabolism Disorder.

      Distinguished in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Distinguished in Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Methylmalonic Acidemia with Homocystinuria, Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Familial Combined Hyperlipidemia.

      Distinguished in Methylmalonic Acidemia with Homocystinuria
      General Practice
      Distinguished in Methylmalonic Acidemia with Homocystinuria
      General Practice

      Rita R Ellithorpe MD Inc

      13422 Newport Ave, Suite L, 
      Tustin, CA 
      Experience:
      44+ 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 44 years and is rated as a Distinguished provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. Her top areas of expertise are Heavy Metal Poisoning, Menopause, Homocystinuria, and Methylmalonic Acidemia with Homocystinuria.

      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Advanced in Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Autoerythrocyte Sensitivity, Purpura, Gardner-Diamond Syndrome, and Cirrhosis.

      Advanced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Advanced in Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Vitamin D Deficiency, Osteomyelitis in Children, Homocystinuria, and Methylmalonic Acidemia with Homocystinuria.

      Advanced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Laguna Hills, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Jeremy Motte is a primary care provider, practicing in Family Medicine in Laguna Hills, California. Dr. Motte is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Homocystinuria, Methylmalonic Acidemia with Homocystinuria, Inborn Amino Acid Metabolism Disorder, and Erectile Dysfunction (ED).

      Advanced in Methylmalonic Acidemia with Homocystinuria
      Advanced in Methylmalonic Acidemia with Homocystinuria

      Office

      115 Pirie Rd Ste D, 
      Ojai,, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Robert Buckingham is a primary care provider, practicing in Cardiologist in Ojai,, California. Dr. Buckingham is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Vascular Dementia, Protein Deficiency, High Cholesterol, and Malnutrition.

      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      1240 East Chapman Avenue, 
      Orange, CA 
      Languages Spoken:
      English

      Pravin Sharma is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Sharma is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Heart Murmurs, Sitosterolemia, High Cholesterol, and Nasal Flaring.

      Advanced in Methylmalonic Acidemia with Homocystinuria
      Medical Genetics
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Medical Genetics
      1201 West La Veta Avenue, 
      Orange, CA 
      Languages Spoken:
      English
      Accepting New Patients

      Cristel Chapel is a Medical Genetics provider in Orange, California. Dr. Chapel is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. Her top areas of expertise are CLN1 Disease, CLN2 Disease, CLN4 Disease, and CLN3 Disease. Dr. Chapel is currently accepting new patients.

      Marie N. Tumusok
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine

      2030 Sutter Place Care Center

      2030 Sutter Place, Suite 1000, 
      Davis, CA 
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Marie Tumusok is a primary care provider, practicing in Internal Medicine in Davis, California. Dr. Tumusok is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. Her top areas of expertise are Diabetic Neuropathy, Obesity in Children, Urinary Tract Infection in Children, and Urinary Tract Infection (UTI). Dr. Tumusok is currently accepting new patients.

      Saman Teymouri
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine

      River Oaks Medical Group

      7 Parkcenter Dr, Ste 100, 
      Sacramento, CA 
      Languages Spoken:
      English, Farsi, Turkish
      Accepting New Patients

      Saman Teymouri is a primary care provider, practicing in Internal Medicine in Sacramento, California. Dr. Teymouri is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Anemia, High Cholesterol, Dyserythropoietic Anemia and Thrombocytopenia, and Gout. Dr. Teymouri is currently accepting new patients.

      Biljinder S. Chima
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      3104 Sunset Blvd., Suite 2B, 
      Rocklin, CA 
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Biljinder Chima is a primary care provider, practicing in Family Medicine in Rocklin, California. Dr. Chima is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are High Cholesterol, Cirrhosis, Familial Combined Hyperlipidemia, and Xanthoma. Dr. Chima is currently accepting new patients.

      Ghassan M. Al
      Experienced in Methylmalonic Acidemia with Homocystinuria
      Experienced in Methylmalonic Acidemia with Homocystinuria

      Complete Care Community Health Center

      Los Angeles, CA 
      Languages Spoken:
      English, Arabic, Spanish
      Accepting New Patients

      Ghassan Al-Jazayrly, MD, is board certified in internal medicine and medical ongology. He currently serves as chairman and director of cancer services at Hollywood Presbyterian Medical Center and director of the research center at Glendale Memorial Hospital. As a member of several hospital committees, Dr. Al-Jazayrly stays up-to-date with the latest cancer and blood disorder advancements. Dr. Al is rated as an Experienced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Anemia, Paget Disease of the Breast, Small Cell Lung Cancer (SCLC), and Lung Cancer.

      Erik Lundquist
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Integrative Medicine
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Integrative Medicine

      Erik Lundquist MD Inc.

      27450 Ynez Rd Ste 100, 
      Temecula, CA 
      Languages Spoken:
      English
      Offers Telehealth

      Erik Lundquist is a primary care provider, practicing in Integrative Medicine in Temecula, California. Dr. Lundquist is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Inborn Amino Acid Metabolism Disorder, Opisthotonos, Muscle Spasms, and Methylmalonic Acidemia with Homocystinuria.

      Peter P. Ferrera
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Internal Medicine

      ProHealth Partners Medical Group

      1045 Atlantic Ave, Ste 505, 
      Long Beach, CA 
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      A good internist has to have a broad overview of medicine, but also has to be a compassionate person. I realize that many medical problems are complex and challenging and require not only scientific knowledge, but also good judgment and intuition; qualities that I respect and demand of myself and those members of my chosen specialty. Dr. Ferrera is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are Ascites, Hypertension, Glucocorticoid-Remediable Aldosteronism, Gastrostomy, and Ureteroscopy.

      Edmund H. Lew
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine
      Advanced in Methylmalonic Acidemia with Homocystinuria
      Family Medicine

      Edmund H. Lew, MD Private Practice

      1505 Wilson Terr, Ste 250, 
      Glendale, CA 
      Languages Spoken:
      English
      Accepting New Patients
      Offers Telehealth

      Dr. Lew, Board Certified Family Medicine physician, offers a different approach to primary care. He sees fewer patients, which means more time for each one. Patients appreciate same/next-day appointments that start on time and aren't rushed; plus they can usually reach his 24/7. His practice also offers other services, including comprehensive, advanced health screenings and diagnostic tests, that go far beyond those found in concierge medicine practices. Dr. Lew develops a personalized wellness plan based on the results of the wellness program. His MDVIP-affiliated practice is open to new patients.MDVIP empowers physicians with advanced diagnostic tools and support that help them deliver a better healthcare experience for more than 350,000 patients nationwide. MDVIP-affiliated primary care doctors are able to practice personalized, preventive care while offering conveniences not typically available in primary care practices. Dr. Lew is rated as an Advanced provider by MediFind in the treatment of Methylmalonic Acidemia with Homocystinuria. His top areas of expertise are High Cholesterol, Acute Cystitis, Hypothyroidism, Prostatectomy, and Endoscopy.

      Showing 1-20 of 290

      Last Updated: 01/09/2026

      What is the definition of Methylmalonic Acidemia with Homocystinuria?

      Methylmalonic acidemia with homocystinuria is a disorder in which the body is unable to correctly process certain protein building blocks (amino acids), fat building blocks (fatty acids), and  cholesterol. The body is also unable to convert the amino acid homocysteine to another amino acid, methionine. Individuals with this disorder have a combination of features from two separate conditions, methylmalonic acidemia and homocystinuria. There are several forms of this combined condition, and the different forms have different genetic causes and signs and symptoms. The most common and best understood form, called cblC type (or cobalamin C disease), occurs in about 80 percent of affected individuals.

      When should I see a Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria doctor search results page. 

      Why is it important to get a second opinion from a different Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with 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 Methylmalonic Acidemia with Homocystinuria doctors in California, US?

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

      Look for the filter feature on the left-side of the Methylmalonic Acidemia with 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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