About

Sarah Hassan, MD joined the OC Blood & Cancer Care team in 2018. Originally from Chicago, she is excited to call Orange County her new home.

Before she began residency, Dr. Hassan worked as a research associate at the University of Illinois Department of Surgery in Chicago. While assisting with Islet Cell Transplant for Type 1 Brittle Diabetics, she discovered an interest in immunology, molecular biology, and progressive treatment options that aim to cure presumed incurable diseases. This experience greatly influenced her decision to pursue work in cancer treatments.

Dr. Hassan completed her Internal Medicine residency at St Vincent’s Mercy Medical Center in Toledo, Ohio in 2015. She completed her fellowship in Hematology/Oncology at the University of Cincinnati Medical Center in 2018. She is triple board certified in Internal Medicine, Hematology, and Medical Oncology.

Dr. Hassan supports Integrative Medicine and although she enjoys working with all patients, she is most interested in treating breast cancer. She strongly values patient autonomy and personalized medicine. Her goal is to provide empathetic care and dignity to every patient she treats.

In her free time Dr. Hassan loves to hike, spend time at the beach, travel, learn different languages, and appreciate art. She is fluent in Urdu and understands basic Polish and Spanish.

Board Certifications:
  • American Board of Internal Medicine- Internal Medicine
  • American Board of Internal Medicine-Medical Oncology
  • American Board of Internal Medicine-Hematology
Areas of Interest:
  • Breast Cancer
  • Supports Integrative Medicine
Languages

English

Provider Specialty

Hematology-Oncology, Hematology/Oncology

Areas of Care

Education

Medical School

Bahria University, Shifa College of Medicine

2008

Internship Program - Internal Medicine

Mercy St. Vincent Medical Center

2013

Residency Program - Internal Medicine

St Vincent Mercy Medical Center GME

2013

Internship/Residency - Internal Medicine

Mercy St. Vincent Medical Center

2015

Fellowship Program - Hematology

University of Cincinnati Medical Center

2018

Locations & Affiliations

Locations

MemorialCare Cancer Institute - Orange Coast Medical Center (Patient Care Pavilion)

18111 Brookhurst St. Suite 6100

Fountain Valley, CA

Office: 657-241-9755

Insurance

Please consult your health care provider or health plan for the most accurate information about your health plan’s coverage of a particular health care service offered at a MemorialCare facility. Learn more about our Accepted Health Plans.

Patient Reviews

5.0 out of 5
(500 Ratings)
Oct 16, 2026
Terri C.
Oct 15, 2026
Rehana W.
Oct 15, 2026
Wayne B.
Listens and explains in an exceptional manner. Had prepared for my appointment.
Oct 15, 2026
Nancy W.
Oct 14, 2026
Swan S.
Oct 14, 2026
Kimberly S.
Oct 14, 2026
Cherie B.
She is fabulous! Very knowledgeable and caring.
Oct 14, 2026
Cathy F.
Very professional, listens to you and pays attention to what you say. Treats you as if you are more than just her patient. She shows that she really cares
Oct 14, 2026
Maura P.
First, time I meet, first appt with her. . She is really nice. Looking forward for my next appt.
Oct 13, 2026
Miriam S.

Source: Reviews are aggregated from third-party review sites such as Facebook, Google, HealthGrades, RepuGen, Vitals, WebMD, and Yelp.