Summary

Dr. Leonard Klein is an internal medicine physician who specializes in oncology and hematology. He earned his medical degree from the University at Buffalo State University of New York School of Medicine & Biomedical Sciences and completed his residency at Barnes Jewish Hospital. With over five decades of practice experience, Dr. Klein brings extensive expertise to cancer and blood disorder care. He is fluent in English, Polish, and Spanish.

Dr. Klein is affiliated with Advocate Lutheran General Hospital and practices at multiple locations throughout the Chicago area, including Niles, Park Ridge, and Des Plaines, Illinois. His practice focuses on comprehensive cancer treatment and blood-related conditions through Illinois Cancer Specialists and the Advocate Bone Marrow Transplant Program. Patients consistently rate his care highly, giving him an average rating of 4.9 out of 5 stars on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 5
  • 51 years of experience
  • 17 insurance plans accepted
  • speaks English, Polish, Spanish
  • Barnes Jewish Hospital
  • 78 written reviews
  • 3 specialties
  • 22 areas of expertise
  • 3 board certifications
  • 1 hospital affiliation
  • 6 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Leonard Marc Klein has 6 locations

Illinois Cancer Specialists Niles

8915 W Golf Rd Fl 2Niles, IL 60714
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Advocate Bone Marrow Transplant Program

1700 Luther Ln Ste 1220Park Ridge, IL 60068
Mon8:30 am - 4:30 pm
Tue8:30 am - 4:30 pm
Wed8:30 am - 4:30 pm
Thu8:30 am - 4:30 pm
Fri8:30 am - 4:30 pm
SatClosed
SunClosed

Dr. Leonard Marc Klein

8915 W Golf Rd Ste 310Niles, IL 60714

Dr. Leonard Marc Klein

8915 W Golf RdNiles, IL 60714
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Ascension Holy Family

100 N River RdDes Plaines, IL 60016

Advocate Lutheran General Hospital

1775 Dempster StPark Ridge, IL 60068

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Dr. Leonard Marc Klein, MDDr. Leena Malik, MDDr. Tina Valdez, DODr. Ramesh Aggarwal, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
3.8 
51 Years of Experience 16 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Polish, Spanish Speaks English Speaks English, Spanish Speaks English
Niles , ILChicago , ILChicago , ILBellwood , IL
Med School: University At Buffalo State University Of New York School Of Medicine & Biomedical Sciences Med School: Lake Erie College Of Osteopathic Medicine Med School: Pt.Bd.Sharma Pgims , Rohtak
Current Profile
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Insurance Plans Accepted by Dr. Leonard Marc Klein

  • Accepts Medicare
  • Accepts Medicaid
  • AARP
  • Aetna
  • Aetna - Medicare
  • Aetna - PPO
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - PPO
  • Blue Cross Blue Shield of Illinois
  • Humana
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Meridian Health Plan
  • Meridian Health Plan - Medicaid (Managed)
  • UnitedHealthcare
  • Wellcare
  • Wellcare - Medicaid (Managed)

Medical Specialties

Dr. Leonard Marc Klein has the following 3 specialties

Specialty Expertise

Dr. Leonard Marc Klein has the following 22 areas of expertise

  • Acute Myeloid Leukemia
  • Adult T-Cell Leukemia-Lymphoma
  • Blood Cancer
  • Blood Disorders
  • Blood Transfusion
  • Bone Marrow Transplant
  • Bone Marrow Transplantation
  • Breast Cancer
  • Chemotherapy
  • Chronic Myeloid Leukemia
  • Chronic Myelomonocytic Leukemia
  • Clinical Research
  • Deep Vein Thrombosis
  • Epidemiology
  • Hematology
  • Hepatitis C
  • Leukemia
  • Lymphoma
  • Metastatic Breast Cancer
  • Myelofibrosis
  • Myeloma
  • Oncology

Certifications, License, & Education

51 Years Experience

Education & Training

Residency

Completed their residency at Barnes Jewish Hospital.

Medical School

Graduated from University At Buffalo State University Of New York School Of Medicine & Biomedical Sciences in 1978 and Jacobs School Of Medicine & Biomedical Sciences At The Univ Of Buffalo in 1975.

NPI Number

Dr. Klein's NPI number is 1255328878.

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Frequently Asked Questions

What languages does Dr. Leonard Klein speak?
Dr. Leonard Klein speaks English, Polish, and Spanish.
Does Dr. Leonard Klein accept virtual/telehealth appointments?
Dr. Leonard Klein has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. Leonard Klein's office located?
Dr. Leonard Klein's office is located at 8915 W Golf Rd Fl 2, Niles, IL, 60714.
How can I make an appointment with Dr. Leonard Klein?
You can find contact information for Dr. Leonard Klein here on Vitals.
Which hospitals is Dr. Leonard Klein affiliated with?
Dr. Leonard Klein is affiliated with Advocate Lutheran General Hospital.

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