Lab Capabilities
At Frontier Dermatology, your skin health is our top priority. With over 50 board-certified dermatologists and advanced practice clinicians, we specialize in diagnosing and treating all skin conditions, from acne to skin cancer. With 35 locations across Washington and Oregon, we make high-quality medical dermatology care accessible to you. Whether you’re located in Seattle, Portland, Vancouver, or the surrounding areas of the Pacific Northwest, you can count on Frontier Dermatology for exceptional medical care.
Why choose frontier dermatopathology?
At Frontier Dermatology, we prioritize precise and efficient diagnoses to put the patient first. We have two advanced pathology labs, located in Salem, Oregon (CLIA-certified), and Mill Creek, Washington (CAP-certified), both equipped with state-of-the-art imaging and diagnostic technologies. Our laboratory professionals and pathologists are dedicated to optimizing systems to ensure safety and rapid turnaround times for accurate identification of all dermatological conditions. Whether it’s uncovering the intricacies of a skin condition or confirming a diagnosis, our labs ensure the utmost accuracy to guide your path to better skin health.
When to seek path services?
Dermatopathology services should be sought when a skin condition requires a more detailed diagnosis beyond a visual examination. If you have a persistent rash, suspicious mole, unexplained skin lesions, or conditions that do not respond to standard treatments, a dermatopathologist can analyze skin biopsies at a microscopic level to provide an accurate diagnosis. This specialized expertise is essential for identifying complex skin disorders, including skin cancers, autoimmune diseases, and chronic skin conditions. By combining clinical dermatology with pathology, dermatopathology ensures you receive a precise diagnosis, which is critical for determining the most effective treatment plan and achieving optimal outcomes for your skin health.
Pathologists

Alison Carrigg, DO
Dr. Carrigg is a board-certified pathologist and dermatopathologist. She earned her Medical Degree from Touro University California and completed her Anatomic and Clinical Pathology Residency at University of California San Diego Medical Center. She also completed Dermatopathology and Surgical Pathology Fellowships at Stanford Hospital and Clinics. Dr. Carrigg specializes in the diagnosis of neoplastic and inflammatory skin lesions.

Angela Bohlke, MD
Dr. Bohlke is a board-certified pathologist and dermatopathologist. She attended Marquette University for undergraduate studies and earned her Medical Doctorate and Master of Public Health from Tulane University. She completed her anatomic and clinical pathology residency at Tulane University Medical Center, where she served as Chief Resident. She also completed a Dermatopathology Fellowship at the Tulane Universtiy Medical Center. Dr. Bohlke specializes in the diagnosis of neoplastic and inflammatory skin lesions.

John Zhang, MD
Dr. Zhang is board-certified in dermatopathology, as well as in anatomic and clinical pathology. At the University of Washington, he was mentored by the then-president of the American Society of Dermatopathology, Dr. Zsolt Argenyi. Prior to that, Dr. Zhang spent 6 years as a researcher at Johns Hopkins University and the National Institutes of Health (NIH), where he obtained his Ph.D. in Human Genetics and Molecular Biology. His research has been published in some of the world’s most respected, peer-reviewed journals and he has also presented his research findings at both national and international conferences. Dr. Zhang has won awards from the American Society of Dermatopathology, as well as the National Institutes of Health. He held positions in leadership committees in the College of American Pathologists and is also a member of the American Society of Dermatopathology.
Specimen Collection Guidelines
Specimen Collection and Submission Guidelines
All specimen bottles must be labeled with:
- Patient Name
- Secondary Identifier (DOB, MRN)
- The name and secondary identifier must match the
information submitted on the requisition
- The name and secondary identifier must match the
- Biopsy Site
- Date of Collection
The requisition slip must include:
- Patient name and secondary identifier
- Patient DOB
- Name and address of requesting provider
- Date of Collection
- Biopsy site and biopsy type (shave, punch, excision, etc)
- ICD10
- Demographic and billing information
Immunohistochemistry and Special Stain Menu
Washington Lab
- AFB
- CD34
- Colloidal Iron
- Giemsa
- PAS
- Perls Iron
- Prame
- Mart-1/MelanA
- Sox-10 (coming soon!)
- S100 (coming soon!)
Frontier Dermatology combines cutting-edge research and advanced treatments with a patient-first philosophy. Whether you need treatment for chronic skin conditions, a thorough skin cancer screening, or expert Mohs surgery, our trusted providers deliver exceptional outcomes. Visit one of our 35 Pacific Northwest locations to experience the highest standard of medical dermatology. We welcome patients from Tacoma, Seattle, Portland, and the surrounding areas of the Pacific Northwest. Contact us today by calling (360) 243-5167.
Contact us
Email us at info@frontierdermpartners.com