Michael A. Kosmo, M.D.

Knowing that I have provided the best care possible that encompasses all the necessary aspects of the patient’s needs ensuring credibility is very important to me. I strive to provide the most appropriate treatment decisions for any particular case, ancillary assistance, and answers that are understood by patients and their families.

Dr. Michael Kosmo | cCARE


General Oncology



Education: University of Massachusetts Medical Center

Residency: Naval Hospital, San Diego, Internal Medicine

Fellowships: Naval Hospital, San Diego, Hematology and Oncology


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About Dr. Michael A. Kosmo

Dr. Kosmo was born in Fall River, Massachusetts. He received his bachelor’s degree in chemistry at Boston College. His medical degree was obtained from the University of Massachusetts Medical Center in 1979. Following his marriage to Stephanie and a cross-country honeymoon celebration, he pursued his internal medicine residency, followed by hematology and oncology fellowships at the Naval Hospital in San Diego.

Dr Kosmo became triple board certified in internal medicine, hematology and oncology, completing his training in 1986. He continued as a staff physician and clinical instructor for the medicine residency and hematology/oncology fellowship training programs until 1991. He was also an associate clinical professor in medicine for the UCSD Medical School clinical teaching program.

While on active duty, Dr. Kosmo was assigned to the Western Pacific aboard USS Tarawa and USS Tripoli. These military tours provided both memorable and enriching experiences, never to be forgotten. Following active duty, Dr. Kosmo remained with the Military Naval Reserves as instructor for the Medicine Residency and Hematology/Oncology Fellowship programs until retirement as Captain, USNR in May 2000.

Prior to joining cCARE in 2012, Dr. Kosmo began at Southwest Cancer Care in 1991 as a community hematology/oncology physician in the San Diego North County area where he continues to practice. Throughout his years in hematology/oncology, he has participated as principle investigator in several clinical research programs. He has memberships with the American Society of Hematology, American Society of Clinical Oncology and San Diego Medical Society.

Dr. Kosmo’s prior community service has included:

  • Director of medical tumor boards at Palomar and Fallbrook hospitals.
  • Medical director for Horizon Hospice.
  • Member of the Palomar Health Cancer Committee.
  • Member of the American Cancer Society.

The medical oncology unit of Palomar Hospital recently honored Dr. Kosmo as the 2011 Physician of the Year.

Dr. Kosmo has many interests including the arts, swimming, skiing, gardening and scuba diving. But the best part of his day is spending time with Stephanie, which is further enhanced by time with his two grown children, Christopher and Laura, who are both pursuing professional careers.

“Health is so precious, and the diagnosis of cancer can be devastating,” says Dr. Kosmo. “Rendering an effective treatment is essential, further enhanced by maintaining quality of life with the best supportive care. But honest communication, which ensures a patient’s best understanding of the disease process, ultimately enables emotional healing.”


“Dr. Kosmo and his wonderful assistant, Maryanne, make a fabulous team! Dr. Kosmo is a very skilled, compassionate, and caring oncologist. Filled with faith and hope, you will leave his office with a spirit of optimism you may not have had upon arrival! Maryanne is Dr. Kosmo’s very dedicated assistant. She is quick to see that everything is in order for each appointment. She works tirelessly for the good of each patient. Maryanne understands the insurance process and has a great relationship with the administrative community. I have learned that no matter how skilled a doctor may be, it is critical that he/she have an efficient and effective administrative staff. With the skill of Dr. Kosmo and efficiency of Maryanne, you are in good hands!”

– Teresa