
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Bonis, Hematology / Oncology Specialist in Chico, CA?
Dr. William Bonis, MD is a Hematology / Oncology Specialist, who primarily practices in Chico, CA with 2 additional practice locations. He is board certified. Dr. Bonis graduated from Semmel Weis University and completed his residency at La Co Harbor Ucla Med Ctr, Hematology/Oncology; Kern Med Ctr, Internal Medicine. Dr. Bonis is fluent in English, Hungarian, and Spanish, and is currently seeing new patients. Dr. Bonis’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Bonis’s office at (530) 332-3890.
Where did Dr. Bonis go to medical school and complete their residency?
Residency: La Co Harbor Ucla Med Ctr, Hematology/Oncology; Kern Med Ctr, Internal Medicine | Harbor-UCLA Medical Center
Medical School: Semmelweis Orvostudomanyi Egyetem (Peter Pazmany Univ)- Budapest | Semmel Weis University | Semmelweis University Faculty of Medicine
Is Dr. Bonis board certified as a Hematology / Oncology Specialist?
Yes, Dr. William Bonis, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Bonis speak?
Dr. Bonis and their clinical team can communicate with patients in the following languages:
English
Hungarian
Spanish
What conditions does a Hematology / Oncology Specialist like Dr. Bonis typically treat?
As a Hematology / Oncology Specialist, Dr. Bonis 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. Bonis. 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:
- Cancer Chemotherapy
- Cancer Immunotherapy
- Chemo treatment
- Oncology chemotherapy
- Cancer drug therapy
- Oncology immunotherapy
- Immune therapy for cancer
ICD-10 Codes:
- Z5111: Encounter for antineoplastic chemotherapy
- Z5112: Encounter for antineoplastic immunotherapy
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:
- Myelodysplastic Syndrome
- Myelodysplastic Syndromes
- Myelodysplastic Syndromes Treatment (PDQ®)
- MDS
- Preleukemia
- Bone marrow failure disorder
ICD-10 Codes:
- D469: Myelodysplastic syndrome, unspecified
Also known as:
- Chronic Lymphocytic Leukemia
- Chronic Lymphocytic Leukemia Treatment (PDQ®)
- CLL
- B-cell chronic lymphocytic leukemia
- Lymphocytic leukemia
ICD-10 Codes:
- C9110: Chronic lymphocytic leukemia of B-cell type not having achieved remission
Also known as:
- Iron Deficiency Anemia from Chronic Blood Loss
- Anemia
- Iron
- Anemia due to iron deficiency and blood loss
- Chronic blood loss anemia
- Low iron anemia from bleeding
ICD-10 Codes:
- D500: Iron deficiency anemia secondary to blood loss (chronic)
What procedures does a Hematology / Oncology Specialist like Dr. Bonis typically perform?
As a Hematology / Oncology Specialist, Dr. Bonis performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Bonis. 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:
- Blood Transfusion
- Blood Transfusion and Donation
- Blood product transfusion
- Red blood cell transfusion
- Plasma transfusion
CPT Codes:
- 36430: Transfusion, blood or blood components
Does Dr. Bonis accept my insurance?
Dr. Bonis accepts most major insurance plans. Important: Please call our office at (530) 332-3890 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Bonis accept in Chico, CA?
Dr. Bonis in Chico, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Bankers
Elevance Health Inc. (formerly Anthem)
Federal government of the United States
Health Plan of San Joaquin
Humana
Medicare
Mutual of Omaha
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Bonis' office located?
What is Dr. Bonis's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Bonis's National Provider Identifier (NPI) number is 1689779209.
What common questions do patients ask about Dr. Bonis?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Bonis
What is Dr. William Bonis's specialty?
Dr. Bonis is a Hematology / Oncology Specialist near Chico, CA.
What does a Hematology / Oncology Specialist do?
An internist doctor of osteopathy specializing in the combined treatment of hematology and oncology disorders. A doctor of osteopathy who is board eligible or certified by the American Osteopathic Board of Internal Medicine was previously able to obtain a Certificate of Special Qualifications in Hematology and Oncology; however, this certificate is no longer available.
Is this Dr. William Bonis affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Bonis is affiliated with Marshall Hospital, Swedish First Hill Campus, Swedish Issaquah Campus, Intermountain Health - Good Samaritan Hospital 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 Hematology / Oncology Specialist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Hematology / Oncology Specialist. 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 William Bonis accepting new patients in Chico, CA?
Yes, Dr. William Bonis is accepting new patients at this time.
Does Dr. William Bonis offer online booking?
Please contact Dr. Bonis's office at (530) 332-3890 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Bonis?
Please contact Dr. Bonis's office at (530) 332-3890 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. William Bonis have?
Dr. William Bonis is certified by the American Board of Internal Medicine.
Other Hematology / Oncology Specialist Near Chico, CA

Hematology / Oncology Specialist
Dr. Sam Mazj, MD is a Hematology / Oncology Specialist, who primarily practices in Chico, CA. He is board certified.
Chico, CA
YY
Hematology / Oncology Specialist
Dr. Yuan Ying, MD is a Hematology / Oncology Specialist, who primarily practices in Chico, CA.
Chico, CA

Hematology / Oncology Specialist
Dr. Prathima Prodduturi, MD is a Hematology / Oncology Specialist, who primarily practices in Auburn, CA with 2 additional practice locations. She is board certified.
Auburn, CA