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Dr. Diane Clausen, MD
Hematology Specialist, Oncology Specialist (cancer)
22 years of experience

Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. Diane Clausen is Excellent. Dr. Clausen has been reviewed by 11 patients who have provided 4 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.1
Promptness 4.1
Courteous Staff 4.1
Accurate Diagnosis 4.4
Bedside Manner 4.5
Spends Time with Me 4.5
Follows Up After Visit 4.4

Specialties & Research

Dr. Diane Clausen, MD is board certified in Hematology and Medical Oncology.

  • She has special expertise in 10 areas:
  • Acute Myeloid Leukemia
  • Cancer
  • Chronic B-Cell Lymphocytic Leukemia
  • Chronic Myeloid Leukemia
  • Chronic Myelomonocytic Leukemia
  • Deep Vein Thrombosis
  • Hepatitis C
  • Holistic Health
  • Leukemia
  • Lymphoma

Education & Awards

Dr. Clausen graduated from Stony Brook University. She has 2 awards.

Patients' Choice Award (2015)
On-Time Doctor Award (2015)


Dr. Clausen has 4 hospital affiliations:

  • Stony Brook University Hospital 
  • John T Mather Memorial Hospital 

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Additional Information
Dr. Diane Clausen MD is a female Hematologist, has 22 years of experience and practices in Hematology and Medical Oncology.
Where does Dr. Diane Clausen practice?
Dr. Diane Clausen has 1 office location.
Dr. Diane Clausen practices Hematology and Medical Oncology near East Setauket, NY.
See East Setauket Hematologists and East Setauket Oncologists.