• Division Chief, Anatomic Pathology, UH Cleveland Medical Center
  • Professor, Pathology, CWRU School of Medicine
  • Professor, Urology, CWRU School of Medicine

(216)844-7379

  • Gender: Male

Board Certifications

American Board of Pathology - Anatomic Pathology
American Board of Pathology - Cytopathology
American Board of Urology - Urology

Education & Training

Medical / Professional School(s)

1971, University of Manitoba Faculty of Medicine

Internship

1972, General Surgery - University of Manitoba Faculty of Medicine

Residency

1975, General Surgery - University of Manitoba Faculty of Medicine
1977, Urology - University of Manitoba Faculty of Medicine
1993, Anatomic and Clinical Pathology - University of Manitoba Faculty of Medicine

Fellowship

1978, Urology - St Peter's Hospital
1994, Cytopathology - University of Manitoba Faculty of Medicine
1995, Surgical Pathology - Mayo School of Graduate Medical Education - Mayo Clinic

Expertise

Cytopathology, Gynecologic Cytology, Genitourinary Pathology

Office Locations

UH Cleveland Medical Center
(216)844-7379
Department of Pathology-Anatomic
11100 Euclid Ave
Cleveland, OH 44106
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Patient Satisfaction Reviews

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Industry Relationships

University Hospitals is committed to transparency in our interactions with industry partners, such as pharmaceutical, biotech, or medical device companies. At UH, we disclose practitioner and their family members’ ownership and intellectual property rights that are or in the process of being commercialized. In addition, we disclose payments to employed practitioners of $5,000 or more from companies with which the practitioners interact as part of their professional activities. These practitioner-industry relationships assist in developing new drugs, devices and therapies and in providing medical education aimed at improving quality of care and enhancing clinical outcomes. At the same time, UH understands that these relationships may create a conflict of interest. In providing this information, UH desires to assist patients in talking with their practitioners about industry relationships and how those relationships may impact their medical care.

UH practitioners seek advance approval for certain new industry relationships. In addition, practitioners report their industry relationships and activities, as well as those of their immediate family members, to the UH Office of Outside Interests annually. We review these reports and implement management plans, as appropriate, to address conflicts of interest that may arise in connection with medical research, clinical care and purchasing decisions.

View UH’s policy (PDF) on practitioner-industry relationships.

As of December 31, 2015, Gregory MacLennan, MD did not disclose any Outside Relationships with Industry.


There is no publicly available rating for this medical professional because he or she either does not see patients or has not yet received the minimum number of Patient Satisfaction Reviews. To be eligible for display, we require a minimum of 30 surveys. This ensures that the rating is statistically reliable and a true reflection of patient satisfaction.