Our Oncology Physicians

DVO doctors


Diablo Valley Oncology / Hematology Medical Group physicians and nurse practitioners provide to each and every patient high quality, compassionate medical care. While strongly committed to aggressive, innovative cancer therapies and often recommending clinical trials, they and the entire staff also emphasize individualization of care, utilizing multiple supportive and complementary therapies.

Dr. Sirott Matt Sirott, M.D.
1998 - 2010
1992 - present
1992 - present
2001 - 2008
1994 - 2008
1992 - 2007
1192 - 1998
Chairman, Pharmacy and Therapeutics Committee, John Muir Medical Center, Walnut Creek, CA
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network
Chairman, Cancer Steering Committee, John Muir Medical Center, Walnut Creek, CA
Chairman, Cancer Committee, John Muir Medical Center, Walnut Creek, CA
Principal Investigator, John Muir Medical Center, SWOG, Walnut Creek, CA
Director, Bone Marrow Transplant Program, John Muir Medical Center, Walnut Creek, CA
Dr Robles Robert Robles, M.D.
2007 - present
6/06 - present
1/99 - present
1997 - present
1997 - present
2/98 - 1/99
Principal Investigator, SWOG, John Muir Medical Center, Walnut Creek, CA
Chair, Oncology Section, John Muir Medical Center, Walnut Creek Campus
Chair, Institutional Review Committee, John Muir Medical Center
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network
Institutional Review Committee, John Muir Medical Center
Dr. Johl Jewel Johl, M .D.
6/09 - present
2005 - present
2005 - present
Member, Utilization Review Committee, John Muir Medical Center, Walnut Creek, CA
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network
Dr. Catalya Esther Catalya, M.D.
2006 - present
2006 - present
2006 - present
Medical Director, Oncology Services, John Muir Medical Center Walnut Creek Campus
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network
Dr. Svahn Tiffany Svahn, M.D.
2006 - present
2006 - present
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network
dr. chen Gigi Chen, M.D.
2006 - present
2006 - present
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network
dr. kamath Sachin Kamath, M.D.
2008 - present
2008 - present
Active Medical Staff, John Muir Medical Center, Walnut Creek & Concord Campuses
John Muir Physician Network



Blog Updates

January is Cervical Cancer Awareness Month

January is Cervical Cancer...

By Gigi Chen, MD It is estimated that last year about 12,710 new cases of invasive cervical cancer...

Managing Cancer Related Fatigue

Managing Cancer Related Fatigue

By Sarah Buenviaje, NP Cancer Related Fatigue can be a symptom of your cancer, or a side effect...

“Breast Radiation in One Day...

By Sachin Kamath,  MDTraditionally, early-stage breast cancer treatment has been treated with...

Merger Announcement

Merger Announcement

Diablo Valley Oncology Merges With Pacific UrologyEconomic trends in health care, new opportunities...


Phone

925-677-5041


Top Workplace
Diablo Valley Oncology/Hematology, Physicians & Surgeons - Oncology, Pleasant Hill, CA







From Twitter

  • I posted 4 photos on Facebook in the album "" http://t.co/zqDH3DQB

  • Join the Cancer Support Community for Humor, Heart and Hope; laughter through the cancer journey! http://t.co/bnuR5Ieu

  • Starting this February we will be having an amazing aerobics class at the California Cancer and Research... http://t.co/LAJSLqgK

  • Moving for LIFE classes start this February! Are you looking for a Yoga class that fits your needs as a cancer... http://t.co/b7i8hppk

  • Check out Walnut Creek Patch about a new treatment we are providing early stage breast cancer patients!! http://t.co/Atu48sDS

East Bay Area Locations


About Oncology


Diablo Valley Oncology / Hematology Medical Group (DVO) provides comprehensive cancer care to patients by bringing together medical oncology, hematology, chemotherapy, radiation therapy, MRI/PET-CT, NaF prostate bone scan, clinical trials, research, Calypso GPS technology, electronic brachytherapy, nutrition counseling and supportive care, along with the services of a specialized pharmacy, all in one convenient location. The specialized care you receive at DVO combines the best in clinical medicine with an outstanding staff and services that meet the individual needs of each patient. Because we are the largest single site of cancer treatment in the county with seven physicians all located at the same site, we have medical coverage at all times while patients are receiving treatment. Our oncology clinics in San Ramon, Pleasant Hill, Walnut Creek and Brentwood are easily accessible to cancer patients from Contra Costa County, Alameda County, Santa Clara County, San Francisco County, Stanislaus County, Solano County, Merced County, Mariposa County, Calaveras County, Eldorado County, Placer County, San Benito County and Monterey County. Oncology doctors Dr. Sirott, Dr. Robles, Dr. Johl, Dr. Svahn, Dr. Chen, Dr. Catalya and Dr. Kamath are specialists in cancer diagnosis, cancer treatment, radiology, chemotherapy treatment, hematology. blood disorders, breast cancer, lung cancer, prostate cancer, bladder cancer and other forms of cancer. All DVO doctors have privileges with the John Muir Health system.


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