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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 (5)

The overall average patient rating of Dr. Marshall Lassman is Average. Dr. Lassman has been reviewed by 15 patients who have provided 5 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 3.3
Promptness 3.5
Courteous Staff 4.1
Accurate Diagnosis 3.8
Bedside Manner 3.2
Spends Time with Me 3.7
Follows Up After Visit 3.3

Specialties & Research

Dr. Marshall Lassman, MD is board certified in Internal Medicine.

  • He has special expertise in 12 areas:
  • Adrenal Gland Diseases
  • Diabetes
  • Diabetes Complications
  • Diabetes Mellitus
  • Diabetes
  • Endocrinology
  • Hot Flashes
  • Lipid Disorders
  • Lipid Metabolism Disorders
  • Menopause
  • Pituitary Diseases
  • Thyroid Diseases

Education & Awards

Dr. Lassman graduated from University of Rochester . He has 2 awards.

Bridges to Excellence Recognition
Diabetes Care Recognition (2014 - 2016)
Level I
NCQA Diabetes Physician Recognition Program (2014 - 2017)


Dr. Lassman has 7 hospital affiliations:

  • St Francis Hospital & Medical Center 
  • Hartford Hospital 

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Additional Information
Dr. Marshall Nathan Lassman MD is a male Internist, has 43 years of experience and practices in Internal Medicine.
Where does Dr. Marshall N. Lassman practice?
Dr. Marshall Lassman has 3 office locations.
Dr. Marshall Lassman practices Internal Medicine near Hartford, CT.
Additional practice locations include: Glastonbury, CT and East Hartford, CT.
See Hartford Internists.