Summary

Dr. Jonathan Kloss is an oncologist and internal medicine physician who has dedicated 41 years to caring for patients with cancer and complex medical conditions. He earned his medical degree from Universidad Del Noreste Escuela De Medicina Dr Jose Sierra Flores and completed his residency training at North Shore University Hospital. Dr. Kloss is fluent in both Spanish and English, allowing him to serve diverse patient populations in their preferred language.

Dr. Kloss practices at several locations in Cortland, New York, including Guthrie Cortland Medical Center and The Renzi Cancer Center. His hospital affiliations include Lourdes Hospital, Wilson Medical Center, and Guthrie Cortland Medical Center. He specializes in treating blood clots and circulation problems, including deep vein thrombosis and various types of embolism. Dr. Kloss performs essential diagnostic tests such as complete blood counts and iron level assessments to monitor patient health. Patients have given him an average rating of 3.1 on Vitals.
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Quick Facts

  • 3.1
  • 41 years of experience
  • speaks Spanish, English
  • North Shore University Hospital
  • 4 written reviews
  • 2 specialties
  • 13 areas of expertise
  • 2 board certifications
  • 3 hospital affiliations
  • 3 office locations
  • Male

Office Locations

Dr. Jonathan David Kloss has 3 locations

The Renzi Cancer Center at Guthrie Cortland Medical Center

34 W Main StCortland, NY 13045

Dr. Jonathan David Kloss

34 WEAT MAIN STCORTLAND, NY 13045

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Dr. Jonathan David Kloss, MD
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Dr. Jonathan David Kloss, MDDr. Mark Jeffrey Reger, MDDr. Abhinay TheliDr. Harish Ravipati
OncologyCardiovascular DiseaseInternal MedicineGeriatric Medicine
3.1 
41 Years of Experience 49 Years of Experience 11 Years of Experience 9 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, English
Cortland , NYCortland , NYCortland , NYCortland , NY
Med School: Universidad Del Noreste Escuela De Medicina Dr Jose Sierra Flores Med School: Suny Upstate Medical University College Of Medicine Med School: S V S Medical College Med School: Guntur Medical College
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Insurance Plans Accepted by Dr. Jonathan David Kloss

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Jonathan David Kloss has the following 2 specialties

Specialty Expertise

Dr. Jonathan David Kloss has the following 13 areas of expertise

  • Blood Cancer
  • Bone Marrow Transplant
  • Cancer
  • Chemotherapy
  • Chronic Myeloid Leukemia
  • Chronic Myelomonocytic Leukemia
  • Deep Vein Thrombosis
  • Hepatitis C
  • Internal Medicine
  • Leukemia
  • Lymphoma
  • Myelofibrosis
  • Myeloma

Certifications, License, & Education

41 Years Experience

MEDICAL LICENSE

Medical Doctor, New York, 2026, Active

EDUCATION & TRAINING

Residency

North Shore University Hospital

Medical School

Universidad Del Noreste Escuela De Medicina Dr Jose Sierra FloresGraduated in 1985

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Frequently Asked Questions

Does Dr. Jonathan Kloss accept my insurance?
You can see the insurance plans that Dr. Jonathan Kloss accepts on their Vitals profile.
How can I make an appointment with Dr. Jonathan Kloss?
You can find contact information for Dr. Jonathan Kloss here on Vitals.
Where is Dr. Jonathan Kloss's office located?
Dr. Jonathan Kloss's office is located at 134 Homer Ave, Cortland, NY, 13045.
What languages does Dr. Jonathan Kloss speak?
Dr. Jonathan Kloss speaks Spanish and English.
Does Dr. Jonathan Kloss accept virtual/telehealth appointments?
Dr. Jonathan Kloss has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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