JM
29 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Maciejewski, Hematologist in Cleveland, OH?
Dr. Jaroslaw Maciejewski, MD is a Hematologist, who primarily practices in Cleveland, OH. He has been practicing for over 29 years. Dr. Maciejewski is fluent in English, German, Polish, and Russian, and is currently seeing new patients. Dr. Maciejewski’s practice accepts Medicare, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Maciejewski’s office at (216) 445-8783.
What are Areas of Expertise for Dr. Maciejewski?
Dr. Jaroslaw Maciejewski, MD is a highly-rated, board-certified Hematologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Maciejewski empowers patients to confidently navigate their health journey, specializing in Anemia-Aplastic, Hematologic Malignancies, Stem Cell Transplant, and comprehensive wellness support. Serving the Cleveland, OH community, Dr. Maciejewski is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Maciejewski go to medical school and complete their residency?
Medical School: Humboldt University of Berlin Medical School
What languages does Dr. Maciejewski speak?
Dr. Maciejewski and their clinical team can communicate with patients in the following languages:
English
German
Polish
Russian
What conditions does a Hematologist like Dr. Maciejewski typically treat?
As a Hematologist, Dr. Maciejewski diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Maciejewski. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Aplastic Anemia
- Diamond-Blackfan Anemia
- Anemia
- Diamond-Blackfan anemia
- Bone Marrow Failure Anemia
- Marrow Aplasia
- DBA
- Congenital pure red cell aplasia
- Inherited red cell aplasia
ICD-10 Codes:
- D619: Aplastic anemia, unspecified
- D6101: Constitutional (pure) red blood cell aplasia
Also known as:
- Other Lymphoid Leukemia
- Acute Lymphocytic Leukemia
- Chronic Lymphocytic Leukemia
- Unspecified lymphoid leukemia
- Atypical lymphoid leukemia
- Rare lymphoid leukemia
ICD-10 Codes:
- C91Z0: Other lymphoid leukemia not having achieved remission
Also known as:
- Paroxysmal Nocturnal Hemoglobinuria
- Anemia
- Urine and Urination
- Paroxysmal nocturnal hemoglobinuria
- PNH
- Marchiafava-Micheli syndrome
- Dark urine anemia
ICD-10 Codes:
- D595: Paroxysmal nocturnal hemoglobinuria [Marchiafava-Micheli]
What procedures does a Hematologist like Dr. Maciejewski typically perform?
As a Hematologist, Dr. Maciejewski performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Maciejewski. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Blood Transfusion
- Blood Transfusion and Donation
- Blood product transfusion
- Red blood cell transfusion
- Plasma transfusion
CPT Codes:
- 36430: Transfusion, blood or blood components
Does Dr. Maciejewski accept my insurance?
Dr. Maciejewski accepts most major insurance plans. Important: Please call our office at (216) 445-8783 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Maciejewski accept in Cleveland, OH?
Dr. Maciejewski in Cleveland, OH accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Cigna Group
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Humana
Medical Mutual of Ohio
Medicare
State of Ohio
UMR Administered Payer
UnitedHealth Group
Zing Health
View All Insurances
Where is Dr. Maciejewski's office located?
Dr. Jaroslaw Maciejewski's Primary Practice
8950 Euclid Ave
Cleveland, OH 44195
(216) 445-8783
What is Dr. Maciejewski's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Maciejewski's National Provider Identifier (NPI) number is 1831299908.
What common questions do patients ask about Dr. Maciejewski?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Maciejewski
What is Dr. Jaroslaw Maciejewski's specialty?
Dr. Maciejewski is a Hematologist near Cleveland, OH.
What does a Hematologist do?
An internist with advanced training specializing in disorders of the blood, spleen, and lymphatic system. This specialist manages conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia, and lymphoma.
Is this Dr. Jaroslaw Maciejewski affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Maciejewski is affiliated with Cleveland Clinic Main Campus which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Hematologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Hematologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Jaroslaw Maciejewski accepting new patients in Cleveland, OH?
Yes, Dr. Jaroslaw Maciejewski is accepting new patients at this time.
Does Dr. Jaroslaw Maciejewski offer online booking?
Please contact Dr. Maciejewski's office at (216) 445-8783 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Jaroslaw Maciejewski?
Please contact Dr. Maciejewski's office at (216) 445-8783 for information regarding telehealth appointment availability or for scheduling assistance.
Other Hematologist Near Cleveland, OH
SB
Hematologist
Dr. Sophia Balderman, MD is a Hematologist, who primarily practices in Cleveland, OH.
Cleveland, OH
JM
Hematologist
Dr. John Molina, MD is a Hematologist, who primarily practices in Cleveland, OH.
Cleveland, OH

Hematology / Oncology Specialist
Dr. Joel Saltzman, MD is a Hematology / Oncology Specialist, who primarily practices in Cleveland, OH with 1 additional practice location. He has been practicing for over 22 years and is board certified.
Cleveland, OH