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Meet The Faculty

Pulmonary Pathology Fellowship faculty converse as they walk down the hall at Mayo Clinic in Phoenix, Arizona.

The Department of Laboratory Medicine and Pathology at Mayo Clinic in Scottsdale, Arizona, is part of a growing, internationally-recognized academic medical center set in the beautiful Sonoran Desert. A highly skilled team of medical professionals including physicians, scientists, medical technologists, medical technicians, lab assistants, biologists, chemists, microbiologists, geneticists, and other specialists work collaboratively to provide high-level care for many. The department receives specimens for testing from Mayo Clinic and is a growing part of the Mayo Clinic reference laboratory for other clinics and hospitals, both nationally and internationally. 

The Division of Anatomic Pathology has 17 pathologists with specialty expertise covering the entire field of surgical pathology. The division is organized around groups dedicated to specific organ systems, but all members contribute to general areas as well, such as frozen section service, autopsy, and cytology.

The division is supported by a full-service histology and immunohistochemistry laboratory. Most molecular testing is performed at Mayo Clinic in Rochester, Minnesota, with whom we partner closely. The pulmonary pathology group, established by Dr. Thomas V. Colby, has long been recognized as one of the world leaders in providing consultative services for pathologists in the United States and around the globe. The division is also home to the Charles B. Carrington Teaching Collection of interesting and challenging thoracic pathology cases dating back to the mid-1980s, one of the largest collections of pulmonary pathology material in the world and a rich source of educational and research material.

From the program director

Henry Tazelaar, M.D.Welcome to the Pulmonary Pathology Fellowship at Mayo Clinic in Scottsdale, Arizona!

Mayo Clinic has been training pulmonary pathology fellows at our campus in Rochester, Minnesota, since 1996, and we are very excited that we've recently been approved to offer the Pulmonary Pathology Fellowship at our campus in Scottsdale, Arizona, as well.

The mission of our fellowship is to train pathologists to:

  • Become experts in understanding and diagnosing routine, complex, and esoteric pathologic specimens from the lung, pleura, and mediastinum
  • Be consultants to other pathologists on these cases
  • Advance the science of pulmonary pathology through clinical and transitional research

While at Mayo Clinic, you will be exposed to a large clinical practice, many research and teaching opportunities, and a large faculty dedicated to your educational success. We have trained many successful pulmonary pathologists and wish to provide the necessary experience for your specific career goals. 

We hope this website will be informative, but please feel free to email me with any questions ( 


Henry Tazelaar, M.D.
Program Director


Mayo Clinic's faculty is committed to teaching and facilitating the growth of medical knowledge. Many of our faculty members have published and lectured extensively and are highly regarded in their fields. As a fellow, you will work closely with these individuals throughout your training in the Pulmonary Pathology Fellowship.

Yasmeen Butt, M.D.

Yasmeen Butt, M.D.

Medical school: St. George's University, St. George's, Grenada

Residency: University of Texas Southwestern Medical Center

Fellowship: University of Texas Southwestern Medical Center

Career interests: Cardiovascular pathology, pulmonary pathology, autopsy pathology

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Brandon Larsen, M.D., Ph.D.

Brandon Larsen, M.D., Ph.D.

Medical school: Medical College of Wisconsin

Residency: University of Arizona College of Medicine

Fellowship: Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine

Career interests: Pulmonary pathology, cardiovascular pathology, bone and soft tissue pathology

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Maxwell Smith, M.D.

Maxwell Smith, M.D.

Medical school: University of Colorado Health Sciences Center

Residency: University of Colorado Health Sciences Center

Fellowship: University of Colorado Health Sciences Center

Career interests: Pulmonary pathology, transplant pathology, hepatopathology

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Melissa Stanton, M.D.

Melissa Stanton, M.D.

Medical school: University of Texas Medical School at Houston

Residency: University of Texas Medical School at Houston

Fellowship: University of Texas M.D. Anderson Cancer Center

Career interests: Genitourinary pathology

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Henry Tazelaar, M.D.

Henry Tazelaar, M.D.

Medical school: Rush Medical College

Residency: Stanford University Medical Center

Fellowship: Stanford University Medical Center

Career interests: Cardiovascular pathology, pulmonary pathology, thoracic transplantation pathology

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