Dr. Gregory T. MacLennan
- Gender: Male
- Experience: 50 years
- Graduation year: 1971
- Sole propriator: No
- NPI: 1992731681
Dr. Gregory T. MacLennan MD
Pathologist
He is located at 11100 Euclid Avenue in Cleveland, OH 44106. Can help patients with the following: Huntington's Disease (HD), Low Back Pain, Meningitis, Migraine, Parkinson's Disease, Pinched Nerve. His National Provider Identifier (NPI) number is 1992731681. Appointment can be made via the phone number (216) 844-7494. He is affiliated with 5 hospitals.
Conditions treated
Dr. Gregory T. MacLennan, being an pathologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Gregory T. MacLennan.
- Alzheimer's Disease
- Amnesia
- Amyotrophic Lateral Sclerosis (ALS)
- Aphasia
- Autism
- Benign Tumor
- Brain Aneurysm
- Brain Damage
- Brain Hemorrhage
- Bug Bites
- Cerebral Palsy (CP)
- Cervical Radiculopathy
- Charcot-Marie-Tooth Disease (CMT)
- Claudication
- Cluster Headaches
- Complex Regional Pain Syndrome
- Concussion
- Creutzfeldt-Jakob Disease (CJD)
- Cyst
- Degenerative Disc Disease (DDD)
- Dementia
- Double Vision
- Dyslexia
- Dystonia
- Early Onset Alzheimers
- Encephalitis
- Encephalopathy
- Epilepsy
- Face Blindness
- Fainting
- Febrile Seizure
- Guillain-Barre Syndrome (GBS)
- Head Injury
- Headache
- Heart Disease
- Herniated Disc
- Huntington's Disease (HD)
- Infarction
- Low Back Pain
- Lumbar Spinal Stenosis
- Mad Cow Disease
- Meningitis
- Meralgia Paresthetica
- Migraine
- Motion Sickness
- Multiple Sclerosis (MS)
- Myasthenia Gravis (MG)
- Myofascial Pain Syndrome (MPS)
- Nerve Damage
- Neuropathic Pain
- Optic Neuritis
- PANDAS
- Paralysis
- Parkinson's Disease
- Peripheral Nerve Injuries
- Peripheral Nerve Tumors
- Peripheral Neuropathy
- Pinched Nerve
- Polio
- Progressive Neurological Disorders
- Pseudotumor Cerebri
- Sciatica
- Seizures
- Skin Biopsy
- Stiff Person Syndrome (SPS)
- Stroke
- Tardive Dyskinesia
- Tension Headache
- Tics
- Tinnitus
- Tourette Syndrome
- Transient Ischemic Attack (TIA)
- Traumatic Brain Injury
- Tremor
- Trigeminal Neuralgia (TN)
- Vertigo
- Vestibular Testing
- Wernicke-Korsakoff Syndrome
Procedures Performed by Dr. Gregory T. MacLennan
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gregory T. MacLennan as in-network for the following 2026 plans.
Health plans
CareSource
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 21 plans from CareSource
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze 7500 $25 Generic Drugs | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze 7500 $25 Generic Drugs + Adult Vision & Fitness | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Core Gold 1500 $10 Generic Drugs | HMO · Gold | Preferred | Accepting new patients |
| Core Gold 1500 $10 Generic Drugs + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| Diabetes Gold 3000 $0 Chronic Care Drugs & Services | HMO · Gold | Preferred | Accepting new patients |
| Diabetes Gold 3000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| Diabetes Silver 5000 $0 Chronic Care Drugs & Services | HMO · Silver | Preferred | Accepting new patients |
| Diabetes Silver 5000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Gold 2000 $15 Generic Drugs | HMO · Gold | Preferred | Accepting new patients |
| Gold 2000 $15 Generic Drugs + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| HDHP Preventive Silver 5500 $0 Chronic Care Drugs | HMO · Silver | Preferred | Accepting new patients |
| Healthy Heart Gold 3000 $0 Chronic Care Drugs & Services | HMO · Gold | Preferred | Accepting new patients |
| Healthy Heart Gold 3000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Gold | Preferred | Accepting new patients |
| Healthy Heart Silver 5000 $0 Chronic Care Drugs & Services | HMO · Silver | Preferred | Accepting new patients |
| Healthy Heart Silver 5000 $0 Chronic Care Drugs & Services + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Low Premium Bronze 10600 $25 Generic Drugs | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Low Premium Bronze 10600 $25 Generic Drugs + Adult Vision & Fitness | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Low Premium Silver 6200 $3 Generic Drugs | HMO · Silver | Preferred | Accepting new patients |
| Low Premium Silver 6200 $3 Generic Drugs + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
| Silver 6000 $20 Generic Drugs | HMO · Silver | Preferred | Accepting new patients |
| Silver 6000 $20 Generic Drugs + Adult Vision & Fitness | HMO · Silver | Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Gregory T. MacLennan is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Gregory T. MacLennan is enrolled to bill Medicare as a Practitioner - Pathology (also registered under: Practitioner - Urology) .
Bills through: University Hospitals Medical Group Inc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
Graduated in 1971Additional Specialities
- Dermatopathologist
- Immunopathologist
- Neurologist
- Neuropathologist
Affiliated hospitals
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- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Female
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Male
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Female
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Female
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Male
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Female
- Address: 10701 East Boulevard Cleveland, 44106, OH
- Gender: Female
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
- Gender: Male
- Address: 11100 Euclid Avenue Cleveland, 44106, OH
Questions & Answers
Has Dr. Gregory T. MacLennan affiliation with hospitals?
Dr. Gregory T. MacLennan is affiliated with SUMMA WESTERN RESERVE HOSPITAL. For the full list of hospitals see this list.
Where can you meet with Dr. Gregory T. MacLennan?
Dr. Gregory T. MacLennan's office is located at 11100 Euclid Avenue in Cleveland, OH 44106.
What conditions does Dr. Gregory T. MacLennan treat?
Dr. Gregory T. MacLennan provides treatment for Huntington's Disease (HD), Low Back Pain, Meningitis, Migraine, Parkinson's Disease, Pinched Nerve. For the full list see this list.
Does Dr. Gregory T. MacLennan accept patients with CareSource?
Yes, Dr. Gregory T. MacLennan is listed in-network for CareSource through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.