About
Daniel P. Klein, MD, FACP earned his Doctor of Medicine degree from Semmelweis University in Budapest, Hungary. He completed his internship at Booth Memorial Hospital and went on to finish his Internal Medicine residency at Flushing Hospital Medical Center. He holds fellowship status in the American College of Physicians, a distinction reflecting his depth in internal medicine.
Dr. Klein has practiced at his East 79th Street location for over 25 years, caring for adults and geriatric patients across the Upper East Side. He holds affiliations at Lenox Hill Hospital, Mount Sinai Beth Israel Medical Center, Mount Sinai West Medical Center, and Upper East Side Nursing and Rehabilitation Center. His clinical focus covers preventive medicine, chronic disease management, and diabetes care. He is passionate about heart disease prevention, brain health, and hypertension management. Dr. Klein speaks English, Hungarian, and Tagalog. 81 out of 5 stars, frequently describing him as compassionate, thorough, and attentive.
Education & Training
Medical School
Semmelweis University, Budapest, Hungary (MD)
Residency
Internal Medicine, Flushing Hospital Medical Center
Fellowship
Fellow, American College of Physicians (FACP)
Additional Training
Internship at Booth Memorial Hospital
Languages
English, Hungarian, Tagalog
Conditions Treated
Who is Dr. Klein right for?
Dr. Klein is a strong fit for adults and seniors seeking comprehensive primary care on the Upper East Side. Patients managing chronic conditions like diabetes, hypertension, or heart disease benefit from his focused clinical approach. His in-house diagnostics make him well-suited for patients who prefer consolidated, convenient care. Hungarian- and Tagalog-speaking patients will find him particularly accessible.
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Frequently Asked Questions
Dr. Klein focuses on preventive medicine, chronic disease management, diabetes care, heart disease prevention, hypertension, and brain health. He also manages pulmonary conditions and sees patients for presurgical evaluations and workers' compensation cases. His broad internal medicine background allows him to address most adult health concerns within his practice.
Dr. Klein holds fellowship status in the American College of Physicians, designated by the FACP credential. This distinction reflects advanced expertise and sustained contributions in internal medicine. He completed his residency training in Internal Medicine at Flushing Hospital Medical Center.
Dr. Klein earned his MD from Semmelweis University in Budapest, Hungary. He completed his internship at Booth Memorial Hospital and finished his Internal Medicine residency at Flushing Hospital Medical Center.
Dr. Klein speaks English, Hungarian, and Tagalog. This range allows him to communicate directly with patients from several cultural and linguistic backgrounds.
Dr. Klein holds active affiliations at Lenox Hill Hospital, Mount Sinai Beth Israel, Mount Sinai West, and Upper East Side Nursing and Rehabilitation Center. He also provides medical supervision for residents at rehab and skilled nursing facilities.
Yes, Dr. Klein provides both diabetes management and on-site diabetes education. He works with patients to develop care plans that address blood sugar control, prevention of complications, and long-term wellness.
Dr. Klein has practiced on the Upper East Side for over 25 years. He has cared for adults and seniors from his East 79th Street office throughout that time, building long-term relationships with many multigenerational families.
Yes, Dr. Klein regularly cares for older adults and geriatric patients. He also extends his care to residents at rehab and skilled nursing facilities, providing continuity for patients in transitional or long-term care settings.
Doctor profile last updated March 21, 2026