Our Providers

All professionals at Cochise Dermatology & Aesthetics maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in the medical field. Learn more about our staff's experience and training below.

Angelo Petropolis

Angelo A. Petropolis, MD 

Board Certified Dermatolgist

  • Undergraduate Education:
    University of Arizona
  • Medical School and Year of Graduation:
    University of Arizona College of Medicine, 1985
  • Residency Training:
    Internal Medicine, 1985 – 1988, Fitzsimons Army Medical Center, Aurora, Colorado
    Dermatology, 1990 – 1993, Brooke Army Medical Center, San Antonio, Texas

Professional Biography:

Dr. Angelo Petropolis has been providing dermatology services to Sierra Vista and Cochise County for over 20 years. He was trained in Dermatology at Brooke Army Medical Center, San Antonio Texas. He is trained in general dermatology, cosmetic dermatology, dermatologic surgery, and laser surgery. He is board certified in both internal medicine and dermatology, however, his practice is limited to dermatology. Dr. Petropolis is on staff at Canyon Vista Medical Center in Sierra Vista. He is a Clinical Instructor, Division of Clinical Education Midwestern University, Arizona College of Osteopathic Medicine. He is a Fellow and former board member of the American Society for Mohs Surgery. He has extensive experience in the treatment of skin cancer. Special interests include skin cancer treatment, Mohs micrographic surgery, and the treatment of aging skin to include lasers, intense pulsed light, Blu-U / photodynamic therapy, injectable fillers, and botulinum toxin. He is directly involved in the training of dermatology residents. He also assists in training internal medicine residents, family medicine residents, medical students, and physician assistants.

Professional Memberships and Associations

  • Fellow – American Academy of Dermatology (AAD)
  • Fellow – American Society for Mohs Surgery (ASMS)
  • Board of Directors – ASMS (2004 – 2008)
  • Member – American Medical Association (AMA)
  • Member – Arizona Medical Association (ArMA)
  • Member – Cochise County Medical Society


Amy Weierman, PA-C


  • Board Certification from the National Commission on Certification of Physician Assistants, 2008-present
  • M.M.S. in Physician Assistant Studies, Midwestern University, Downers Grove, IL 2008
  • B.S. in Biology, Lewis University, Romeoville, IL 2005


Amy is originally from Joliet, Illinois and has been practicing as a Physician Assistant since 2008. She worked in internal medicine and emergency medicine prior to specializing in dermatology in September 2010.  She completed the Society of Dermatology Physician Assistants Diplomate program in September, 2012. Before pursuing a career in medicine, Amy served five years in the U.S. Navy as a foreign language cryptologic technician.  As a Naval Aircrew member with VQ-2 squadron, she was awarded the Armed Forces Air Medal for participation in Operation Provide Promise in support of UN peacekeeping efforts in the former Yugoslavia.

Professional Memberships:

  • Diplomate, Society of Dermatology Physician Assistants
  • Fellow, American Academy of Physician Assistants
Matthew Crosby


Matthew Crosby, DO

Dermatology Resident

  • Undergraduate Education:
    Arizona State University, BS, 2006
  • Medical School and Year of Graduation:
    Midwestern University, Arizona College of Osteopathic Medicine, 2013
  • Residency Training:
    Traditional Rotating Internship, 2013-2014, Community General Osteopathic Hospital, Harrisburg, PA

Professional Biography:

Dr. Matthew Crosby is an Arizona native. He completed his undergraduate studies at Arizona State University, graduating summa cum laude with a degree in biology. He then graduated in the top 10% of his medical school class at Midwestern University. Following his internship at a community hospital in central Pennsylvania, he served for 3 years as a flight surgeon for the United States Air Force. He is excited to be back home in Arizona, and to learn the practice of dermatology under the guidance of Dr. Petropolis and his staff.

Professional Memberships and Associations

  • Member – American Academy of Dermatology (AAD)
  • Member – American Osteopathic College of Dermatology (AOCD)
  • Member – American Osteopathic Association (AOA)


Sherry Tuttle, CMA

Clinical Supervisor, Mohs Histotechnician

Sherry began working for Dr. Petropolis in 1996 when her diverse training and skill in both the front and back office has been a dedicated member of our staff. Today you will find her busy with her duties as our Clinical Supervisor, lead member of our team of Certified Medical Assistants. She is one of our two certified MOHS surgery histotechnicians.