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Karl Theil, MD


Karl Theil, MD

Appointed: 2000

No Patient Satisfaction Reviews
Karl Theil, MD
Department: Clinical Pathology
Location: Cleveland Clinic Main Campus
Mail Code L30
9500 Euclid Avenue
Cleveland, OH 44195
Type of Doctor:
Adults Only

Biographical Sketch

Karl Theil, MD, serves in the Section of Hematopathology to provide diagnostic services in hematopathology, hemostasis and thrombosis, and cytogenetics.

He is certified by the American Board of Pathology in anatomic and clinical pathology, with special qualification in hematology.

He also serves as Director of the Pathology Residency Program at Cleveland Clinic.

Education & Fellowships

Fellowship - The Ohio State University Hospitals
Columbus, OH USA
Residency - The Ohio State University Hospitals
Clinical Pathology
Columbus, OH USA
Residency - New York University Medical Center
Anatomic Pathology
New York, NY USA
Internship - New York University Medical Center
Anatomic Pathology
New York, NY USA
Medical School - The Ohio State University College of Medicine and Public Health
Columbus, OH USA
Undergraduate - Allegheny College
Meadville, PA USA


  • Anatomic & Clinical Pathology
  • Anatomic & Clinical Pathology- Hematology

Specialty Interests

hematopathology, leukemia, cytogenetics


  • American Society for Clinical Pathology
  • College of American Pathologists
  • American Society of Hematology

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 5/30/2016, Dr. Theil has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers’ discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Languages Spoken

  • English