Medical Genetics

Clinical Services: Pediatrics
Upper East Side
505 East 70th Street, Helmsley Tower, 3rd Floor
New York, NY 10021
Mon-Fri 09:00am - 05:00pm
(646) 962-0273
(646) 962-2205

The recent expansion of medical genetic knowledge coupled with the proliferation of new genetic technologies has led to innovative applications of personalized genetic medicine to promote the health and well being of the unborn child, children, their parents and their families.
Our Division of Medical Genetics provides an individualized array of genetic services including clinical evaluation and risk assessment, genetic counseling and genetic testing for a variety of genetic conditions to address the unique needs of each individual/family.

These include the following:

  • Preconception counseling/Carrier Testing

  • Continuity of care for patients with medical conditions

  • Individuals with a personal or family history of genetic conditions   

Preparing For Your Family’s Visit

Thank you for choosing Weill Cornell Department of Pediatrics! To facilitate the check-in process during your child's visit, we have posted important forms and information for you to read, complete and return to the physician's office prior to your arrival. Please download the forms and questionnaires and mail or fax to 646-962-0273 at least 72 hours before your appointment.

Welcome Packet Documents

Genetics - New Patient Intake Form: PDF|Word

Medical Genetics Packet (pediatric or adults)
Insurance Plans Accepted
Health Info Disclosure Form
Patient Portal Signup
Parking Options
Campus Map

Medical Genetics Fellowship
For information about our Medical Genetics fellowship, visit our Fellowship page.

Our Doctors
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Omar Abdul-Rahman, M.D. Profile Photo
Clinical Genetics (MD)  
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Jennifer Bassetti, M.D. Profile Photo
Clinical Genetics (MD)  
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Lilian L. Cohen, M.D., MPH Profile Photo
Clinical Genetics (MD)  
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What Our Patients Are Saying


"Professional, patient, really smart, courteous, respectful."

Oct 26, 2022
Source: Healthgrades

"She takes her time with you makes you feel so confident and explains everything so clearl"

Jun 19, 2022
Source: Healthgrades

"I saw Doctor Cohen to decide whether to get a genetic test. The visit began with a thorough conversation with an excellent and personable genetic counselor, Tessa. Both Tessa and Dr. Cohen took time to ask important questions and explain what I might learn and what my options were. They explained things clearly. Great doctor, great team."

May 14, 2022
Source: Healthgrades
*Individual results may vary