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Clinics & Locations
Clinics & Locations
Here to serve you

Explore our network of care for kids, from the tiniest to teens and young adults.
Find a Doctor
Find a Doctor
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- Get a Second Opinion
World-class docs

We'll help you find the best provider for your child.
Your Visit
Your Visit
Stress-free visits

Accommodations. Admission. Discharge. Procedure prep. We've got you covered.
Patient Education
Patient Education
Extraordinary kid care

Our specialists handle conditions ranging from the common to the most rare.
Medical Professionals
Medical Professionals
Referrals made easy

Contacts and resources to get your patients to our pediatric specialists
Why Choose Us?
Why Choose Us?
Best in Northern CA

We're ranked #1 in pediatric cancer, heart surgery, cardiology & more.

Ruyan Rahnama

Ruyan Rahnama

Ruyan Rahnama

MD, PhD

Contact me

Contact me

About me

Telehealth (video visits)

Insurance plan info

Fellowships

Johns Hopkins University School of Medicine - GME, Pediatric Hematology-Oncology
Residencies

New York Presbyterian Hospital/Columbia University, Pediatrics
Degree

MD, ICAHN School of Medicine at Mount Sinai

Where I see patients (1)

Selected research

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B7-H3-targeted natural killer cells effectively kill atypical teratoid / rhabdoid tumors and extend survival in orthotopic xenografts.
bioRxiv : the preprint server for biology
January 2026
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Early cytokine and chemokine signals shape the anti-AML activity of bispecific engager-secreting T cells.
Haematologica
September 2025
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Single-chain variable fragment affinity tuning can optimize anti-AML CAR-NK cell functionality.
Journal for immunotherapy of cancer
February 2025
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Fetal surgery firsts

The first open fetal surgery in the world was performed at UCSF in the early 1980s.