Your Initial Appointment with Mitochondrial Medicine

Travel Advisories

Please allow for extra travel time to your appointments due to traffic congestion caused by multiple construction projects around CHOP and Penn, including the partial closure of the Wood Garage. Read more about parking at CHOP’s Philadelphia Campus.

If you have an appointment after February 13th please go to Buerger 12th floor for these appointments moving forward. This is our new clinic location.

Prior to your initial appointment

Young girl holding a pink stuffed bear Before scheduling an appointment with one of our physicians, we will need to review your child's or the adult patient's medical records. The Medical Records and Reports Checklist below outlines what records you’ll need to submit to the clinic.

Please send relevant paperwork as soon as possible via fax, e-mail or direct mail. Records can be faxed to the "Mito Center" attention at 215-590-0583 with a fax cover page noting: “Requesting appointment with Mitochondrial Medicine,” emailed to, or mailed to:

The Hub for Clinical Collaboration
Human Genetics/12th Floor
Attn Mitochondrial Medicine
3500 Civic Center Blvd.
Philadelphia, PA 19104

The patient's primary care physician or other specialists may also reach out to us to share records or request a consultation.

An electronic survey will need to be completed by your family prior to the visit.

Medical records and reports checklist

Letters from the past five years of evaluations, including:

  • Neurological evaluations
  • Clinical genetics evaluations
  • Ophthalmologic evaluations, including electroretinogram (ERG)
  • Audiological evaluations
  • Cardiology evaluations, including echocardiogram and electrocardiogram (EKG)
  • Gastrointestinal evaluations, including biopsy reports
  • Other specialist evaluations

Copies of images (digital copies on CD preferred) and written reports of previous imaging studies, including:

  • Brain MRI and/or MRS (spectroscopy)
  • Echocardiograms (written report only)
  • Ultrasounds

Reports of biochemical studies on blood or urine performed in the last two years, including:

  • Lactic acid level — in blood and/or cerebral spinal fluid level
  • Pyruvate level — in blood and/or cerebral spinal fluid level
  • Plasma amino acid analysis
  • Urine organic acid analysis
  • Carnitine analysis (total carnitine, free carnitine and acyl-carnitine profile)
  • Comprehensive chemistry panel
  • Creatine kinase
  • Complete blood count with differential
  • Other routine blood and/or urine studies

Reports of prior tissue studies, including:

  • Muscle biopsy analyses
  • Skin biopsy analyses
  • Liver biopsy analyses


  • Records from prior hospitalizations and/or surgeries
  • Copy of growth chart from pediatrician (height, weight and head circumference)
  • Genetic testing results

Scheduling an appointment

Once all medical records have been received and reviewed, you or your child will be placed on a wait list for an appointment. We will contact you to schedule an appointment when one becomes available. Urgent add-on appointments are possible within 1-2 weeks if all records are available, an appropriate medical indication is present, and a physician referral is made to support this appointment.

We strongly recommend that you contact your insurance company to determine your coverage for diagnostic testing, including genetic studies. Depending on your carrier, pre-authorization is frequently needed to allow blood and urine testing to be performed on the day of your visit at Children’s Hospital of Philadelphia, and many genetic studies may only be possible to be performed at a Children's Hospital of Philadelphia laboratory.

One to two weeks prior to your scheduled appointment, a member of our team may contact you to ask for any additional information needed, such as your family history, to ensure a complete understanding of the patient's condition and background to best prepare for your visit. This detailed preparation will help make your visit as productive as possible.

Day of your visit

Mitochondrial Medicine is located on the 12th floor of the Buerger Center for Advanced Pediatric Care. You may park underneath the Buerger Center (Garage B) and proceed to the registration and check-in area which is located next to the elevators on the 1st floor of the Buerger Center. 

What to expect at your appointment

Your child’s appointment will involve an extensive evaluation by one of our physicians during which they will confirm relevant medical findings with you, perform a detailed physical examination, and initiate any recommended diagnostic biochemical and genetic laboratory testing.

Our team will provide you with relevant mitochondrial disease counseling based on your or your child’s diagnosis, including an overview of mitochondrial disease features and genetics. We will also discuss the availability, benefits and limitations of different avenues of testing, as well as discuss initiating any supplement or vitamin therapies.

We will also make referrals to other specialists as needed to ensure coordinated long-term care. The following specialists are often involved in the care of patients with mitochondrial disease:

Because we have so much to cover during your visit, please plan to spend a minimum of four hours at CHOP for your appointment.

After your visit

The focus of the Mitochondrial Medicine Clinic is to work towards clearly identifying the presence of mitochondrial dysfunction and clarify the underlying cause of suspected mitochondrial disease. This includes optimizing multidisciplinary care and precision medicine long-term for confirmed patients with definite, primary mitochondrial disease. We do not provide the day-to-day medical management for your or your child’s medical concerns. It is important that you have a dedicated physician for ongoing medical needs, such as your primary care doctor and appropriate specialists for organ specific problems such as neurologist, cardiologist, endocrinologist, etc.

If genetic testing was recommended at your initial visit, results are typically available within up to 4-8 months depending on insurance approvals to initiate testing. At this time, a member of our team will contact you to schedule a follow-up appointment to discuss these results in more detail.

Annual follow-up appointments are typically recommended for those with a strong suspicion of mitochondrial disease with no known genetic cause. Individuals with definite mitochondrial disease are followed up at regular intervals determined by their age, disease severity and unique medical needs.

Travel support

The Cure MITO Foundation participates in “HOPE for MITO Families” which helps diagnosed families with travel and accommodations to our clinic. For more information email

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Why Choose Us

Mitochondrial Medicine has the nation’s top pediatric specialists and researchers advancing understanding of mitochondrial disease.

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Your Initial Appointment

Learn more about scheduling an appointment and what to expect during your first visit with Mitochondrial Medicine.