City of Hope® Seacliff is a department of City of Hope National Medical Center, a general acute care hospital. With our new, nearly 17,000 square-foot space designed for patient convenience, comfort and healing, you’ll immediately feel the lifesaving difference with our cancer focused expertise. Our Seacliff location enables us to provide our patients with a broader range of provider-based services closer to home. Here, you’ll benefit from exceptional, highly specialized cancer expertise, advanced technology and groundbreaking cancer research. Our physicians and staff walk alongside you in your journey to survivorship in a calming environment, featuring tailored furniture, curated artwork and coastal colors.

33.6801816, -118.0004017

2100 Main Street #300
Huntington Beach, CA 92648
All Patients

Monday through Friday: 8 a.m. to 6 p.m.
Closed on federal holidays  

Visitor Policy
  • Clinical Services
  • Our Physicians
  • Insurance Information

City of Hope cares for patients from prevention through survivorship by pairing our expertise in numerous cancers and conditions with world-class technologies and services. 

City of Hope’s renowned physicians and researchers utilize the latest in technology and innovation to treat cancer, coupled with our enduring belief in providing unparalleled compassionate care.

Is My Insurance Accepted?

View a list of insurance companies that City of Hope currently contracts with for its locations and physicians. Even if your plan is included, check with your insurance company to make sure you are covered. Your insurance company/medical group will tell you if you need any authorizations.

If you wish to receive treatment at City of Hope, but we're not currently contracted with your insurance plan, contact your insurance company and ask about obtaining authorization to receive treatment here.

View our pricing and billing

Provider based billing

No Surprise Billing

When you're treated by an out-of-network provider at an in-network facility, you are protected from balance billing. In these cases, you shouldn't be charged more than your plan's copayments, coinsurance and/or deductible. Learn about your rights and protections against surprise medical bills.

Explore City of Hope Seacliff

CITY OF HOPE Seacliff provides the Orange County community with a broader range of specialized services for patient convenience and enhanced care.

We are committed to transforming the future of cancer care at each of our regional network locations throughout Southern California, working with you to successfully navigate and manage prevention, diagnosis, treatment and survivorship.  

Huntington Beach Seacliff

Visiting City of Hope Orange County Seacliff?

Our Physicians

Luke Chen, M.D.
Medical Oncologist and Hematologist

Luke Chen, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Chen’s research has explored ways to improve treatment for prostate cancer and other malignancies.

Joshua G. Cohen, M.D., F.A.C.O.G., F.A.C.S., is a board-certified gynecologic oncologist dedicated to offering his patients in Orange County empathy and excellence in clinical care.

Sudarsan Vishnu Kollimuttathuillam, M.D.
Medical Oncologist and Hematologist

Sudarsan Vishnu Kollimuttathuillam, M.D., is a medical oncologist and hematologist at City of Hope's Huntington Beach and Irvine Sand Canyon locations. Dr. Kollimuttathuillan places a priority on offering his patients access to innovative treatments and clinical trial options.

Tiffany Loh, M.D.
Tiffany Loh, M.D.

Tiffany Loh, M.D., strives to address patients’ concerns in a caring, compassionate way. She knows that every patient is a unique individual, so she puts a priority on listening carefully and working with patients to ensure that their needs are met.

Need Help?

We’re here for you, contact us and we’ll answer any questions.