Our Pathology Team

Marian Butcher, M.D.

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Dr. Butcher joined DPMG in 2013. She obtained her medical degree at Louisiana State University, Shreveport, L.A. Dr. Butcher completed her residency in Anatomical and Clinical Pathology at The University of Alabama, Birmingham, AL. She also completed a fellowship in Surgical Pathology at Stanford University and in Gastrointestinal/Liver Pathology at University of California, Los Angeles. She currently serves as the Clinical Laboratory Medical Director at Sutter Medical Center Sacramento. Dr. Butcher is Board-certified in Anatomic and Clinical Pathology.


Dario V. Caccamo, M.D.

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Dr. Caccamo joined DPMG in 2001. He obtained his medical degree at the University of Buenos Aires School of Medicine, Buenos Aires, Argentina. Dr. Caccamo completed his Anatomic Pathology residency at the Mount Sinai Medical Center, N.Y., N.Y., and a fellowship in Cytopathology at Henry Ford Hospital in Detroit, Michigan. He completed a fellowship in Neuropathology at the University of Virginia. Dr. Caccamo is Board certified in Anatomic Pathology, Cytopathology and Neuropathology.


Joyce Chen, M.D., Ph.D.

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Dr. Chen joined DPMG in 2021. She received her medical degree from College of Medicine, Zhengzhou University, China and her graduate degree from The University of Hong Kong, Hong Kong. She completed her residency in Anatomic Pathology at Icahn School of Medicine at Mount Sinai, New York. Dr. Chen completed a fellowship in Dermatopathology from Memorial Sloan Kettering Cancer Center, New York. Dr. Chen is Board-certified in Anatomic Pathology and Dermatopathology.


Nicholas Coley, M.D.

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Dr. Coley joined DPMG in 2022. He received his medical and graduate degree from University of Washington, Seattle. Dr. Coley completed his residency in Anatomic and Clinical Pathology at University of California Davis, Sacramento. He completed a fellowship in Neuropathology at University of California San Diego, La Jolla.
Dr. Coley is Board-certified in Anatomic and Clinical Pathology and Neuropathology.


Susan A Doberneck, M.D.

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Dr. Doberneck joined DPMG in 2023. She received her medical degree from University of New Mexico. She completed her residency in Anatomic and Clinical Pathology followed by a fellowship in Surgical Pathology at UCLA Center for Health Sciences. Dr. Doberneck is Board-certified in Anatomic and Clinical Pathology.



phone-512If you are a clinician and would like to speak to one of our pathologists, please call 916-446-0424.