LeRoy W. Keiser, MD
Santa Rosa, CA 95403
Providence Medical Group Santa Rosa - Cancer Center
3555 Round Barn Circle, Suite A, Santa Rosa, CA 95403
Are you covered?
Check to see if your insurance is covered by this provider.
- US Family Health Plan - TriCare
- Health Net Medicare Advantage
- HealthSmart (Interplan) PPO
- Coventry/First Health PPO
- Health Net HMO
- Western Health Advantage Medicare
- Western Health Advantage HMO
- United Healthcare Medicare Advantage
- United Healthcare HMO
- United HealthCare PPO
- Partnership Health Plan of California
- Multiplan PPO
- Health Net PPO
- Health Net - TriCare
- Cigna PPO
- Cigna HMO
- Choice /Humana PPO
- Blue Shield of CA PPO
- Blue Shield of CA HMO
- Anthem Blue Cross PPO
- Anthem Blue Cross Medicare PPO
- Anthem Blue Cross HMO
- Aetna PPO
- Aetna Medicare Advantage PPO
- No results found
Good news - you're covered!
You're not covered
Unfortunately, this provider doesn’t accept your insurance or plan.Don’t worry, we can help you find other providers who do.
View More Providers
About LeRoy W. Keiser
Dr. Keiser graduated from the University of Illinois with a Bachelors Degree in Chemistry. He attended Stanford Medical School where also completed his residency work and has a fellowship from Yale University in Medical Oncology.
Dr. Keiser joined Redwood Regional Medical Group in 1977 and presently serves as Principal Investigator for Redwood's gastrointestinal clinical trials. He also is President of the Association of Northern California Oncologists (ANCO).
Dr. Keiser is also on Medical Staff at all local hospitals in Santa Rosa and surrounding cities, including Petaluma, Lakeport, Sonoma and Ukiah.
Stanford University School of Medicine
1973
Stanford University School of Medicine
Internal Medicine
1974
Stanford University School of Medicine
Internal Medicine
1975
Yale University School of Medicine
Oncology
1977
- American Board of Internal Medicine, Medical Oncology
- American Board of Internal Medicine, Internal Medicine
3555 Round Barn Circle, Suite A
Santa Rosa, CA 95403
Providence Medical Network
Santa Rosa Memorial Hospital
Petaluma Valley Hospital
Community Reviews
At Providence, we're dedicated to providing you quality, personalized health care. We are constantly striving to optimize your experience.
As part of ensuring you have a positive experience with Providence, our online provider directory includes ratings and patient comments for select providers. More about our survey.
I Have never had a better medical experience than being connected with this group.
Providence Patient
Always a pleasant experience with Dr. Keiser. Very easy to talk to and always puts me at ease. My favorite doctor for sure.
Providence Patient
Dr. Keiser is always warm and kind. He listens and answers questions, obviously knowing my history and test results. I always feel confident after visits that I am in good hands.
Providence Patient
All good
Providence Patient
Dr. Keiser is very caring and I am thankful to have him taking care of me.
Providence Patient
We love him
Providence Patient
All grerat
Providence Patient
Excellent doctor and staff.Love his approach and discussions regarding health issues.
Providence Patient
I love Dr. Keiser. He is the greatest.
Providence Patient
Thank you
Providence Patient
Dr. Keiser is a great doctor. He listens and provides great care along with compassion, kindness and respect.
Providence Patient
I'm always eager to talk with Dr. Kaiser. He is always informative and thorough answering all my questions. I always leave with all the information I need.
Providence Patient
Dr. Keiser is one of the very few physicians (in my recent experience) who takes as much time as needed with his patients. He is the reason we drive 65 miles for oncology care instead of 2.5 miles locally.
Providence Patient
Everyone I have encountered in my Santa Rosa medical journey have been friendly, helpful & caring. Thank You
Providence Patient
I am finally happy with the medical team I currently have. They both appear to be interested in my well being.
Providence Patient
Amazing people!
Providence Patient
He is the best doctor.
Providence Patient
I am very satisfied with the care I receive from Dr. Keiser.
Providence Patient
Very pleased
Providence Patient
Dr Keiser is always kind, concerned and informative. This visit was no different. He remembers my history and treats me accordingly. I could not be more pleased.
Providence Patient
Provider is supporting long term cancer treatment; very happy with care provided.
Providence Patient
Good service.
Providence Patient
I try to book my appointments with Dr Kaiser as early in the day as possible, because he always takes as much time as needed with his patients so tends to run overtime and waiting for him can take a while later and n the day, what makes for a long wait! But I really appreciate him taking the same time with me!
Providence Patient
Dr. Keiser is always good about answering all my questions, simply, so I can understand it.
Providence Patient
Dr. Wayne Keiser is respectful, attentive and informative. I like that he doesn't prescribe treatment for treatments sake. Unlike others he's ok with inaction where no action is needed -vs trying to prove he's "doing something" via unnecessary tests".
Providence Patient
Kind , Not rushed ,Intelligent,very aware of where I am emotionally.Patient
Providence Patient
Dr Keizer is knowledgeable about his patients and his specialties. I value his care and knowledge.
Providence Patient
The whole team is amazing. Dr. Keiser is the absolute best.
Providence Patient
Dr. Keiser Is just the best there is.
Providence Patient
Dr. Keiser is a terrific physician. He takes his time with you, answers your questions in a way that you understand and is extremely professional yet friendly.I am thrilled that I have him as a provider!
Providence Patient
Dr. Keiser, very goodDr. Cooper, fair
Providence Patient
Excellent care. Survey too long.
Providence Patient
Follow-up information and response from Dr Kaiser is very appreciated.
Providence Patient
Dr. Keiser may run behind schedule but once he is with you in the exam room, he gives you all his attention. He is kind, informative and listens to his patients.
Providence Patient
All good experiences
Providence Patient
Very good.
Providence Patient
My doctor is always very helpful and professional during my visit with him. I always tell him not to retire because he is the best doctor I ever have.
Providence Patient
Pleased with appointment.
Providence Patient
Dr. Keiser is truly the best
Providence Patient
Personable
Providence Patient
Very good care provider one of the best
Providence Patient
This Dr is great.
Providence Patient
Dr. Keiser is great. He explains what will happen and what determines results. Always know what to expect going in, and how long it will take. Thank you very much.
Providence Patient
My oncologist, Dr Keiser, does a great job of coordinating my post breast cancer care & follow-up. He is always pleasant & willing to answer any questions I have.
Providence Patient
Best Oncology office ever Everyone there are kind n Respectful people Caring how you are doing Like your part of their Ohana (family)
Providence Patient
I have had nothing but the best care from this office, starting with the chech-in personnel to the doctors.
Providence Patient
Dr Keiser listened to my concerns about pains I had been having, checked me over, and ordered a Cat Scan which showed I had some heart issues. Involved a cardiologist which diagnosed my contain.
Providence Patient
Provider was prepared to discuss all aspects of my condition and was able to suggest ways to improve overall health
Providence Patient
As always, Dr. Keiser and the entire oncology team have been caring, professional and always make me feel well taken care of.
Providence Patient
This Doctor Keiser is an amazing Doctor, one who anyone with a blood disorder would want on his side. He is articulate, thoughtful, listens to all questions, explaining even if it is of no concern. Explains what is the most important. Very kind and considerate human being who we feel so fortunate to have on my husband's case!!!!
Providence Patient
My provider is very knowledgeable regarding my illness..
Providence Patient
Dr. Keiser is a great listener and ensured he understood my story and that I was able to ask questions with him providing easy to understand answers.
Providence Patient
Always great care
Providence Patient
Dr. Keiser is a detailed and intelligent doctor. I appreciate his willingness to answer all my questions and to problem solve when needed. This personal care comes with extra patience needed when he is running late.
Providence Patient
I love Dr. Keiser. He saved my life. And I never had to have chemo or radiation.
Providence Patient
Dr.Wayne Kieser is an ideal doctor.
Providence Patient
Dr Keiser always make me feel like he's in my corner. He answers all my questions in a professional and friendly manner. I hope he never retires!
Providence Patient
The MD cancelled our in person appointment and offered a last minute phone consultation that lasted 15 minutes. It was not the in depth medical care I need.
Providence Patient
No bad experiences.
Providence Patient
I always have a good experience with this office. I love the front desk staff, so kind. I love my doctor, also very kind.
Providence Patient
All positive
Providence Patient
Great visit all questions were answered
Providence Patient
Dr. K has the best "bedside manner" of any doctor I have ever seen. On each visit he has made me feel so comfortable and safe, even though the consequences of seeing him could have been and still can be very grave and devistating.
Providence Patient
Me Kaiser is faultless. He's attentive caring and stays focused on my cancer and jokes a little about my dog. He's wonderful
Providence Patient
He listens, gives sound and sensible advice. He looks you in the eyes when communicating with you. He uses layman terms and/ or explains medical terms. I feel he genuinely cares from the first time I saw him. He was late due to a pretty ill patient, was interrupted a few times, but didn't have his hand on the door knob to leave my appointment. I highly recommend Dr Keiser
Providence Patient
Dr. Keiser has been a blessing in our lives for over a year now. We have recommended him to other family members. We can't stress enough how much the entire staff is so willing to show support and help when needed. Truly have a way of making a bad situation much easier to live with.
Providence Patient
Fabulous
Providence Patient
Dr. Keiser has always been professional, kind and compassionate.
Providence Patient
Dr. Keiser is always kind, caring and interested in anything I have to relate. I never feel rushed.
Providence Patient
He is the best doctor.
Providence Patient
Thanks to everyone involved with helping me with my healthcare. Unfortunately, I need the help and the services I'm getting up to this point have been encouraging and very helpful.
Providence Patient
He is an outstanding provider.
Providence Patient
Outstanding
Providence Patient
Dr.keiser is very accessible and receptive As well as instructive at clarifying info.
Providence Patient
I have trusted Wayne Keiser (oncologist) from the day we met and right away put my life (cancer) in his hands, so to speak. As I have gone through a lot (chemo / surgery / radiation / medication) I have done all this following Keiser's directions and suggestions in full. My trust in him has been awarded fully, as I am in good health with many more years to go. Thanks to Keiser and my lovely wife's full support.
Providence Patient
Excellent care
Providence Patient
Always greeted with a smile, respect and caring.
Providence Patient
Dr.Keiser is a wonderful doctor and I have been his patient since 2005. His care and concern about me as his patient and a person is quite special to have in a doctor in today's world. It is Dr. Keiser's humanity that shines through in addition to his expertise as an oncologist. Nothing but praise for him from me.
Providence Patient
Dr. Keiser spent time with me explaining my upcoming treatment which was very helpful.
Providence Patient
Care provided was excellent all questions were answered.
Providence Patient
As always, I'm so happy with the excellent care I receive from this office. EVEYONE is kind, caring and professional, from the receptionist to my doctor. I feel fortunate I'm able to come to this office.
Providence Patient
I have been a patient of Dr Keiser and this clinic for almost 15 years. I would never consider another provider or clinic. The staff is not phenomenal.
Providence Patient
Dr. Keiser is very personable and always explains tests and results to me.
Providence Patient
I felt seen as a patient and as a person.
Providence Patient
Dr. Keiser is great!
Providence Patient
I have been coming to the office for 20 years. It has always been top notch service.
Providence Patient
Very knowledgeable and thoughtful
Providence Patient
All of my virtual and in person visits have been positive. From Doctor Keiser, his support team, the receptionists, lab staff and infusion team members are all very professional, courteous and supportive of the care I'm receiving, in the Oncology Department.
Providence Patient
Dr Keiser is very attentive to my concerns
Providence Patient
He answered all my questions thoroughly and explained the treatment well
Providence Patient
Dr. Keiser was thorough, compassionate and informative during our visit. He was attentive, reassuring and kind. I was extremely impressed.
Providence Patient
Always prepared and knowledgeable about my situation. I feel I am lucky to have Dr. Keiser as my provider.
Providence Patient
Dr. Kaiser and staff are wonderful
Providence Patient
I have no complaints. All people are nice.
Providence Patient
Dr. Keiser is a warm, very knowledgeable MD specialist who listens carefully, even has a great sense of humor. He explains things well and even if we feel we are interrupting him, he stops and reminds us that this a discussion. We are encouraged to ask any and all questions. I don't think we could have a better Hematology/oncologist on my case! Hope he doesn't retire any time soon!!!
Providence Patient
Dr Keizer was great. He was covering for dr lee.he was verify informative and empathetic.he listened to all my concerns and explained them in an understandable format.It was a very good interaction for me.
Providence Patient
Easy to talk too
Providence Patient
The care I receive is outstanding from each and everyone!
Providence Patient
He is verygood doctor.
Providence Patient
Dr Keiser is one of the most caring Dr's I've had take care of me.
Providence Patient
Dr. Keiser is extremely attentive to his patients and usually runs late because of his nature of talking and listening to his patients, so I don't mind waiting to see him if he's running late.
Providence Patient
Very satisfied. Dr Kaiser was on top of my medical records. He was very pleasant.
Providence Patient
Dr. Keiser is always professional, caring and makes me appreciate him so much!
Providence Patient
Dr.Wayne Keiser is an outstanding Doctor. I'm truly blessed to have him as a physician. His kindness, care and knowledge are exceptional. An excellent individual and provider of medical services.
Providence Patient
Dr Keizer has been my Dr for years and is top of his game. Always up to speed on latest treatments etc
Providence Patient
Doctor Kaiser is the best
Providence Patient
Dr. Keiser has followed me for 22 years following me through chemotherapy and post cancer treatment. He's kind, professional, competent, and ACCESSIBLE. I'm glad he's still practicing!
Providence Patient
My provider is kind and knowledgeable. His personableness is a gift and curse, as often he is running late for my visits.
Providence Patient
Provider is providing ongoing cancer care and entire staff is caring and professional.
Providence Patient
Good
Providence Patient
Waited approximately 45 minutes to be seen. Time spent with doctor, 10 minutes. I spent the last 5 minutes in the Scheduling office scheduling next year's appointment. All-in-alI I was out of their office in an hour. Great doctor, extremely busy practice.
Providence Patient
Excellent, very knowledgeable, answers all questions, is compassionate.You are lucky to have him in the practice!
Providence Patient
Dr. Keiser wonderful!
Providence Patient
Best provider and the nicest people
Providence Patient
I always receive top notch service by all at this facility. Both front of the house and the lab as well as first rate care from my doctor .
Providence Patient
Dr Kaiser has a listening ear and makes right decisions concerning my health. He also talks about my medical conditions in an understandable way and explains our next steps.
Providence Patient
I enjoy my vusit with Dr. Keiser. He cares about my heath and answers any questions I may have that is easy to understand.
Providence Patient
No bad experiences, ever.
Providence Patient
Kind Patient Intelligent Not rushed - I feel like he is not rushed and wants me to do well.
Providence Patient
Dr. Keiser has been's treatments and advice continue to be invaluable and vital to my needs.
Providence Patient
Knows my history and is very involved in my treatments and monitoring.
Providence Patient
I can always count on Dr Keiser!
Providence Patient
Dr Keiser looked at my records concerning a recent operation and cleared up my concerns for what was the best next step for me to take.
Providence Patient
He is one of the best physicians with whom I have had the privilege to work .
Providence Patient
The provider shows empathy and understanding.
Providence Patient
Dr. Vulchi was my provider before she moved away and Dr. Keiser had the necessary information about my case which he related to me when I met him. It was helpful to know he took enough time with me during the visit.
Providence Patient
Been with Dt Keiser for many years. Of all my doctors he is the one I trust the most, although my main physician, Dr Leo Smith is a very close second. Also.
Providence Patient
Very knowledgeable and easy to understand explaining my reason for being there. I look forward to meeting with the Doctor.
Providence Patient
He took time to explain things to me. He listened to my questions. Felt comfortable with him.
Providence Patient
Super good care. Wonderful caring staff thank you
Providence Patient
I'm always treated with courtesy and professionalism in this office. I always feel that Dr. Keiser is in my corner, ready to help in any way he can.
Providence Patient
Dr. Keiser is a very caring, intelligent Specialist with a great bedside manner . Relieved to have him!
Providence Patient
Clinical Interests
- Adverse Effects To Anticoagulants
- Aids Related Malignancies
- Anaplastic Meningioma
- Anemia
- Anticoagulation
- Antiphospholipid Syndrome
- Atypical Meningioma
- Bleeding Disorder
- Blood Cancer
- Blood Clotting Disorder
- Blood Disorders
- Bone Marrow Biopsy
- Bone Marrow Disorders
- Bone Marrow Transplant
- Breast Cancer
- Breast Cancer Chemotherapy
- Breast Cancer Genomics
- Cancer
- Cancer Chemotherapy
- Cancer Pain
- Cancer Related Anxiety Disorder
- Cancer Related Bereavement Disorder
- Cancer Related Depression
- Cancer Related Fatigue
- Cancer Related Psychiatric Disorder
- Cancer Related Stress Disorder
- Cancer Risk Assessment
- Cancer Survivor
- Carcinoma Of Unknown Primary
- Catastrophic Antiphospholipid Syndrome (Caps)
- Chemoradiation
- Clear Cell Meningioma
- Clinical Trials
- Colorectal Cancer
- Crizotinib
- Deep Thrombophlebitis
- Deep Vein Thrombosis
- Egfr Mutation
- Egfr Translocation
- Endocrine Complications Of Cancer Therapy
- Endometrial Cancer
- Epithelioid Malignant Peripheral Nerve Sheath Tumor
- Erlotinib
- Factor Eight Disorder
- Factor Nine Deficiency
- Fibrous Meningioma
- Germinoma
- Giant Cell Tumor Of The Bone
- Gynecologic Cancer Genomics
- Head And Neck Cancer
- Hellp Syndrome
- Hematologic Malignancies
- Hemoglobinopathies
- Hemophilia
- Histiocytic Sarcoma
- Hypercoagulable State
- Idiopathic Thrombocytopenic Purpura
- Immature Teratoma
- Iron Deficiency Anemia
- Leukocytosis
- Leukopenia
- Lung Cancer
- Lupus Anticoagulant
- Lymphedema Therapy
- Lymphoma
- Lymphopenia
- Melanoma
- Melanoma Of The Rectum
- Melanoma On Foot
- Melanoma On Leg
- Melanoma On Toe
- Melanoma On Trunk
- Melanoma Surgery
- Melanotic Schwannoma
- Meningeal Melanoma
- Metastatic Liver Cancer
- Metastatic Prostate Cancer
- Mucosal Melanoma
- Musculoskeletal Tumor
- Myelodysplasia
- Myelodysplastic Syndrome
- Myeloproliferative Diseases
- Neutropenia
- Non Germinomatous Germ Cell Tumor
- Non Hodgkin Lymphoma
- Oral Complications Of Cancer
- Oral Lesions
- Osteosarcoma
- Pancytopenia
- Petechiae
- Polycythemia
- Post Thrombotic Syndrome (Pts)
- Primary Myelofibrosis
- Prothrombin Gene Mutation
- Pulmonary Metastases
- Recurrent Thrombosis
- Retroperitoneal Mass
- Sarcoma
- Secondary Polycythemia
- Sickle Cell Disease
- Side Effects Of Cancer Treatment
- Splenomegaly
- Squamous Cell Carcinoma Of The Head And Neck
- Squamous Cell Carcinoma Of The Tongue
- Stomach Cancer
- Submucosal Tumors
- Supratentorial Primitive Neuroectodermal Tumor
- Sweat Gland Carcinoma
- Targeted Molecular Therapy
- Teratoma With Malignant Transformation
- Thalassemia
- Thoracic Cancer
- Thrombocytopenia
- Thrombophilia
- Thrombotic Disorders
- Thrombotic Thrombocytopenic Purpura
- Thyroid Cancer
- Tracheal Cancer
- Unknown Primary Cancer
- Vaginal Melanoma
- Venous Occlusive Crisis
- Von Willebrand Disease
- Waldenstrom Macroglobulinemia
Very pleased with the entire office staff and Doctor
Providence Patient