Summary

Dr. Leonard Klein is an internal medicine physician specializing in oncology and hematology with over five decades of medical practice. 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. His extensive experience spans 51 years of caring for patients with cancer and blood disorders. Dr. Klein speaks Polish, Spanish, and English.

Dr. Klein practices at multiple locations in Niles and Park Ridge, Illinois, and maintains hospital affiliations with Advocate Lutheran General Hospital. He specializes in treating conditions such as bladder cancer and allergies, including allergic rhinitis. His expertise includes performing allergen immunotherapy and sublingual immunotherapy to help patients manage their allergic conditions. Patients consistently rate Dr. Klein highly, giving him an average rating of 5.0 on Vitals.

AI-generated from data on this provider profile.

Quick Facts

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

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. Augusto Guevara, MDDr. Kyra Payne, MDDr. Stephanie Bochen Tsai, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients
3.7 
51 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Polish, Spanish, English Speaks English Speaks English Speaks English, Spanish
Niles , ILOak Park , ILChicago , ILMaywood , IL
Med School: University At Buffalo State University Of New York School Of Medicine & Biomedical Sciences Med School: Chicago Medical School at Rosalind Franklin University of Medicine & Science
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

Barnes Jewish Hospital

Medical School

University At Buffalo State University Of New York School Of Medicine & Biomedical SciencesGraduated in 1978
Jacobs School Of Medicine & Biomedical Sciences At The Univ Of BuffaloGraduated in 1975

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Frequently Asked Questions

How can I make an appointment with Dr. Leonard Klein?
You can find contact information for Dr. Leonard Klein here on Vitals.
Does Dr. Leonard Klein accept my insurance?
You can see the insurance plans that Dr. Leonard Klein accepts on their Vitals profile.
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.
What languages does Dr. Leonard Klein speak?
Dr. Leonard Klein speaks Polish, Spanish, and English.
Which hospitals is Dr. Leonard Klein affiliated with?
Dr. Leonard Klein is affiliated with Advocate Lutheran General Hospital.

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