Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gregory T Maclennan, MD

Individual provider Blood Banking & Transfusion Medicine Physician · NPI 1992731681

Gregory T Maclennan, MD is a Pathology in Cleveland, Ohio. Qualified in 1971, 55 years ago. Practices with University Hospitals Medical Group Inc, a 2,242-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
55
Licensed in
OH
In the registry since
2006
Specialties on file
15
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

11100 Euclid Ave
Cleveland, OH 44106-1716
Phone: (216) 844-7494
Fax: (216) 286-6341
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology Physician (primary) Taxonomy 207ZP0101X · Licence 35068763 (OH)
Blood Banking & Transfusion Medicine Physician Taxonomy 207ZB0001X · Licence 35068763 (OH)
Clinical Pathology Physician Taxonomy 207ZC0006X · Licence 35068763 (OH)
Cytopathology Physician Taxonomy 207ZC0500X · Licence 35068763 (OH)
Dermatopathology (Pathology) Physician Taxonomy 207ZD0900X · Licence 35068763 (OH)
Forensic Pathology Physician Taxonomy 207ZF0201X · Licence 35068763 (OH)
Hematology (Pathology) Physician Taxonomy 207ZH0000X · Licence 35068763 (OH)
Immunopathology Physician Taxonomy 207ZI0100X · Licence 35068763 (OH)
Medical Microbiology Physician Taxonomy 207ZM0300X · Licence 35068763 (OH)
Neuropathology Physician Taxonomy 207ZN0500X · Licence 35068763 (OH)
Molecular Genetic Pathology (Pathology) Physician Taxonomy 207ZP0007X · Licence 35068763 (OH)
Anatomic Pathology & Clinical Pathology Physician Taxonomy 207ZP0102X · Licence 35068763 (OH)
Chemical Pathology Physician Taxonomy 207ZP0104X · Licence 35068763 (OH)
Clinical Pathology/Laboratory Medicine Physician Taxonomy 207ZP0105X · Licence 35068763 (OH)
Pediatric Pathology Physician Taxonomy 207ZP0213X · Licence 35068763 (OH)

Record details

NPI number1992731681
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 24, 2006
Last updated in NPPESAugust 25, 2010
Mailing address24701 Euclid Ave, 3rd Floor, Euclid, OH 44117-1714

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Also practisesUROLOGY
Medical schoolOTHER
Graduated 1971 (55 years in practice)
Group practice University Hospitals Medical Group Inc — 2242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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