Stewart W. Comer, MD  MA FCAP

Stewart Comer, MD


Dr. Comer is board certified in anatomic and clinical pathology and has been a CLIA laboratory medical director for a variety of hospital and specialty laboratories since 1994. He currently serves as the Cottage Health Laboratory Director for three hospitals, Santa Barbara, Goleta and Santa Ynez Cottage Hospitals as well as Pacific Diagnostics Core Laboratory (the largest reference clinical laboratory on the central coast of California from Los Angeles to San Francisco).

He also serves as the Pathology Department Chairman at Santa Barbara Cottage Hospital and is a member of the Executive Committee of the Medical Staff at both Santa Barbara and Santa Ynez Cottage Hospitals. He is the Laboratory Director of the Santa Barbara County Public Health Laboratory performing specialized molecular and conventional mycobacteriology and infectious disease testing.

Since 2014, he has served as a senior pathology research consultant for Agilent/Dako Diagnostics company specializing in FDA clinical trials for their successful monoclonal antibody companion diagnostic test associated with the new-generation, checkpoint inhibitor therapy. He is the pathology representative at the Ridley Tree Cancer Center brain tumor board and serves as a neuroanatomy lecturer for the national Kavli Neurosciences Institute Neuroanatomy course held annually on the UCSB campus.

Dr. Comer was selected as the 2019 Physician of the Year at Santa Barbara Cottage Hospital and along with his Mission Pathology Consultants (MPC) colleagues and Pacific Diagnostics Laboratories (PDL) staff is devoted to providing the highest laboratory quality in support of patient care for our providers in the central coast of California. He is intimately involved in the multidisciplinary laboratory activities and supports the Cottage Health vision of regional medical care delivery in support of our central coast communities. In this quest, all of our MPC pathologists are committed to being readily available and responsive to our providers for laboratory test consults.

Education and Background

Fellowship: Molecular Pathology, Memorial Sloan Kettering Cancer Center (2011-2012)

Internship:  Transitional Internship, Naval Medical Center San Diego (1989-1990)

Residency:  Anatomic and Clinical Pathology, Naval Medical Center San Diego (1990-1994)

Medical school: University of California San Diego Medical School (1985-1989)

Management:  MA in Management at Peter Drucker School of Management, Claremont Graduate University (1999-2001); Certificate in Accounting at University of California San Diego (2001), Lean Six Sigma Black Belt, Booz Allen Hamilton Consulting (2006) with National LSSBB Certification (ASQ 2009)

Contact Us

Need help finding what you're looking for? Call 805-879-8100 or toll-free at 866-591-4610 to reach out to our team.