JR
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Ryoo, Therapeutic Radiologist in Ontario, CA?
Dr. Joan Ryoo, MD is a Therapeutic Radiologist, who primarily practices in Ontario, CA with 2 additional practice locations. Dr. Ryoo is fluent in English, and is currently seeing new patients. Dr. Ryoo’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ryoo’s office at (323) 783-2841.
What languages does Dr. Ryoo speak?
Dr. Ryoo and their clinical team can communicate with patients in the following languages:
English
What conditions does a Therapeutic Radiologist like Dr. Ryoo typically treat?
As a Therapeutic Radiologist, Dr. Ryoo diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Ryoo. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Prostate Cancer
- Prostate Cancer Treatment (PDQ®)
- Prostatic Carcinoma
- Prostate Gland Cancer
- Malignant Prostate Tumor
ICD-10 Codes:
- C61: Malignant neoplasm of prostate
Also known as:
- Breast Cancer
- Mammary cancer
- Breast carcinoma
- Breast tumor
ICD-10 Codes:
- C50912: Malignant neoplasm of unspecified site of left female breast
- C50911: Malignant neoplasm of unspecified site of right female breast
Also known as:
- Colorectal Cancer
- Rectal cancer
- Colon cancer
- Bowel cancer
- Malignant neoplasm of rectum
ICD-10 Codes:
- C20: Malignant neoplasm of rectum
Also known as:
- History of Radiation Therapy
- Radiation Therapy
- Past Radiation Treatment
- Previous Radiotherapy
- History of Radiotherapy
ICD-10 Codes:
- Z923: Personal history of irradiation
Also known as:
- Endometrial Cancer
- Uterine Cancer
- Endometrial Cancer Treatment (PDQ®)
- Malignant Endometrial Tumor
- Endometrial Carcinoma
- Cancer of the Endometrium
ICD-10 Codes:
- C541: Malignant neoplasm of endometrium
Also known as:
- Secondary Bone Cancer
- Bone Cancer
- Metastatic bone cancer
- Cancer spread to bone
- Bone metastases
ICD-10 Codes:
- C7951: Secondary malignant neoplasm of bone
What procedures does a Therapeutic Radiologist like Dr. Ryoo typically perform?
As a Therapeutic Radiologist, procedures performed by Dr. Joan Ryoo may include:
- Abdominal Aortic Aneurysm (AAA) Screening
- Abdominal Imaging
- Abdominal Radiology Consultation
- Angiography
- Arthrography
- Barium Swallow
- Bone Biopsy
- Bone Density Measurement / DXA Scan
Please contact Dr. Ryoo's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Ryoo accept my insurance?
Dr. Ryoo accepts most major insurance plans. Important: Please call our office at (323) 783-2841 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Ryoo accept in Ontario, CA?
Dr. Ryoo in Ontario, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Commercial
Centene Corporation
City of Los Angeles
Humana
Medicaid
Medicare
UnitedHealth Group
View All Insurances
Where is Dr. Ryoo's office located?
What hospitals are Dr. Ryoo affiliated with?
Castle Connolly Top Hospital
This doctor is affiliated with a Castle Connolly Top Hospital.
Dr. Ryoo has admitting privileges at the following hospitals:
Kaiser Permanente Panorama City Medical Center,Panorama City, CA
Ranked Cancer Surgery

Ranked in 2 Procedures

Kaiser Permanente Panorama City Medical Center,Panorama City, CA
Ranked Cancer Surgery
Ranked in 2 Procedures
Kaiser Permanente West Los Angeles Medical Center,Los Angeles, CA
Ranked General Surgery

Ranked in 3 Procedures

Kaiser Permanente West Los Angeles Medical Center,Los Angeles, CA
Ranked General Surgery
Ranked in 3 Procedures
Kaiser Permanente Baldwin Park Medical Center,Baldwin Park, CA
Ranked Cancer Surgery

Ranked Mastectomy

Kaiser Permanente Baldwin Park Medical Center,Baldwin Park, CA
Ranked Cancer Surgery
Ranked Mastectomy
Kaiser Permanente Los Angeles Medical Center,Los Angeles, CA
Ranked in 2 Specialties

Ranked in 4 Procedures

Kaiser Permanente Los Angeles Medical Center,Los Angeles, CA
Ranked in 2 Specialties
Ranked in 4 Procedures
Kaiser Permanente South Bay Medical Center,Harbor City, CA
Ranked Weight Loss Surgery

Kaiser Permanente South Bay Medical Center,Harbor City, CA
Ranked Weight Loss Surgery
Ronald Reagan Ucla Medical Center,Los Angeles, CA
Ranked in 3 Procedures

Ronald Reagan Ucla Medical Center,Los Angeles, CA
Ranked in 3 Procedures
What is Dr. Ryoo's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Ryoo's National Provider Identifier (NPI) number is 1699854596.
What common questions do patients ask about Dr. Ryoo?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Ryoo
What is Dr. Joan Ryoo's specialty?
Dr. Ryoo is a Therapeutic Radiologist near Ontario, CA.
What does a Therapeutic Radiologist do?
Therapeutic radiology, also known as radiation oncology, is a medical specialty that utilizes high-energy radiation to treat cancer and other diseases. This field focuses on delivering precise doses of radiation to target tumors while minimizing exposure to surrounding healthy tissues. Therapeutic radiologists work collaboratively with other healthcare professionals to develop treatment plans, manage patient care, and monitor treatment outcomes.
Is Dr. Joan Ryoo affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Ryoo is affiliated with Kaiser Permanente Panorama City Medical Center, Kaiser Permanente West Los Angeles Medical Center, Kaiser Permanente Baldwin Park Medical Center, Kaiser Permanente Los Angeles Medical Center, Kaiser Permanente South Bay Medical Center, Ronald Reagan Ucla Medical Center which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Therapeutic Radiologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Therapeutic Radiologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Dr. Joan Ryoo accepting new patients in Ontario, CA?
Yes, Dr. Joan Ryoo is accepting new patients at this time.
Does Dr. Joan Ryoo offer online booking?
Please contact Dr. Ryoo's office at (323) 783-2841 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Dr. Joan Ryoo?
Please contact Dr. Ryoo's office at (323) 783-2841 to schedule an appointment.
Where is Dr. Ryoo's office located?
Dr. Ryoo's offices are located in Ontario, CA, Los Angeles, CA, and Bellflower, CA.
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