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Dr. William Bonis, MD

Dr. William Bonis, MD

Hematology*
30+ years of experience

Dr. William Bonis, MD is a hematologist in Chico, CA and has over 30 years of experience in the medical field. Dr. Bonis has extensive experience in Skeletal System Neoplasms, Pancreatic Neoplasms, and Breast Neoplasms. He graduated from UNITED HUNGARIAN UNIVERSITY MEDICAL SCHOOL in 1990. He is affiliated with medical facilities such as Intermountain Health Good Samaritan Hospital and Mercy Medical Center Mount Shasta. He is accepting new patients and telehealth appointments.

3.5 Star Rating
Based on 10 reviews 3.5 Star Rating (10 reviews)

Practice

265 Cohasset Rd Ste 170 Chico, CA 95926
Telehealth available

Make an Appointment

(530) 332-3890

Hospital Highlight

Dr. Bonis is affiliated with Enloe Medical Center Chico, a highly rated hospital.

At a Glance

  • Areas of Expertise
    Dr. Bonis specializes in the areas of Hematology, Internal Medicine & Medical Oncology. • See board certifications
  • Friendly Staff
    Patients said the staff was friendly. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    Outstanding Patient Experience Award™ • See hospitals
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Dr. Bonis' Reviews

Likelihood to recommend Dr. Bonis

3.5
10 ratings, 6 with a written review
5 star
60%
60%
4 star
0%
0%
3 star
0%
0%
2 star
10%
10%
1 star
30%
30%

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My primary MD referred me to hematology and I saw Dr Bonis. He took a very thorough history and gave me very clear and detailed explanations. I was very impressed by the scope of his knowledge. He is easy to talk to and personable. This was the best doctor interaction I have had in many years.
What went well
  • I felt respected
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Mar 14, 2025
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Best doctor in 84 years
I was referred to oncology by my neurologist who is treating my peripheral neuropathy. Blood tests had some concerns, hence my appt. with oncology. I saw Dr. Bonis and without a doubt it was the best and most informative doctor's appointment I've had in my 84 years. He couldn't have been better. If all doctors were as professional and thorough as Dr. Bonis the nation would be far healthier. Absolutely first rate. Pleasant in all ways. Totally pleased I saw him.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Allen Cichanski – Nov 15, 2023
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Cold and not companionate to cancer patients
Dr Bonis was my oncologist after I received a diagnosis of colon cancer. I had a colon resection (stage 2) and saw Dr Bonis only once. He didn't explain what I could expect and told me I should get blood tests every 3 months for 2 years then every 6 months. He said I could come and see him if I felt the need. I never saw him again. You shouldn't treat cancer patients in that manner. I was scare and confused. He only made it worse. Another doctor took his place and I was extremely grateful. I finally had a doctor who cared.
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
1 other person found this helpful
Helpful
L Hunt – Aug 29, 2022
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A good Doctor
My experience with Dr. Bonis was quite good. He was patient in answering my questions and was thorough with information. At my age I have seen several Doctors and Dr. Bonis is one of the best. Dr. Bonis was professional, friendly and communicative. While nervous I was able to relax with his engaging personality.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jim, Durham – May 20, 2022
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I saw Dr Bonis a few years ago for follow up after breast cancer treatment. I loved him and his sense of humor. Flash forward to a diagnosis of metastatic disease for me and it was a completely different experience. He seemed jaded, griped a fair amount about doctors who were leaving the cancer center and then basically told me I had months to live. I was so shocked I went home and cried. I have now found another doctor who is understanding and encouraging and the treatment I received is keeping my cancer stable. This makes me sad because I used to really like him.
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
May 11, 2020
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My experience with Dr Bonis was great! He took the time to educate me and explained all my symptoms could also mimic other disorders! His staff is also extremely friendly.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Jessie in Chico – Jun 04, 2018
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Leave a review

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Know Before You Go

About Me

biography

Dr. William Bonis, MD is a hematologist in Chico, CA and has over 30 years of experience in the medical field. Dr. Bonis has extensive experience in Skeletal System Neoplasms, Pancreatic Neoplasms, and Breast Neoplasms. He graduated from UNITED...read more

  • Hematology

  • Medical Oncology

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • United Hungarian University Medical School

    Medical School, 1990
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Hematology
- 
Internal Medicine
- 
Medical Oncology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

  • English

  • Hungarian

Focus on Breast Cancer

Locations

Practice

Edgar O. Vyhmeister MD265 Cohasset Rd Ste 170 Chico, CA 95926
1

Practice

PeaceHealth United General Medical Center2000 Hospital Dr Sedro Woolley, WA 98284
2

Affiliated Hospitals

  • East Morgan County Hospital

    2400 Edison St
    Brush, CO 80723

    How patients felt about the care they received at this hospital.

    92%
    Patients said they were given information about recovering at home

    4% higher than the national average

    88%
    Patients said their room and bathroom were always kept clean

    11% higher than the national average

    View all patient feedback

  • Enloe Medical Center

    1531 Esplanade
    Chico, CA 95926
    Recipient of 9
    hospital awards

    America's 250 Best Hospitals Award™ (2024, 2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    Patient Safety Excellence Award™ (2023)

    Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

    View all awards

    How patients felt about the care they received at this hospital.

    86%
    Patients said they were given information about recovering at home

    2% higher than the national average

    80%
    Patients would recommend the hospital to friends and family

    15% higher than the national average

    View all patient feedback

  • Intermountain Health Good Samaritan Hospital

    200 Exempla Cir
    Lafayette, CO 80026
    Recipient of 6
    hospital awards

    Outstanding Patient Experience Award™ (2024, 2023, 2022)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    View all awards

    How patients felt about the care they received at this hospital.

    88%
    Patients said they were given information about recovering at home

    4% higher than the national average

    80%
    Patients said that nurses always listened to them and explained things well

    5% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality