I practice general adult primary care internal medicine in Internal Medicine Associates. I have practiced in this group since I came to MGH as a medicine intern in 1987, and I continue to follow patients I first met during my training.


Primary Care


Clinical Interests
  • Low back pain
  • Diabetes management
  • AIDS and HIV infection
  • Heart disease
  • Hypertension management
  • Adult primary care medicine
  • General internal medicine
Medical Education
  • MD, Columbia University College of Physicians and Surgeons
  • Residency, Massachusetts General Hospital
  • Fellowship, Massachusetts General Hospital
Board Certifications
  • Internal Medicine
  • Boston: Massachusetts General Hospital
Insurances Accepted
  • Aetna Health Inc.
  • AllWays Health (NHP) - ACD
  • AllWays Health (NHP) - PBO
  • Beech Street
  • Blue Cross Blue Shield - Blue Care 65
  • Blue Cross Blue Shield - Indemnity
  • Blue Cross Blue Shield - Managed Care
  • Blue Cross Blue Shield - Partners Plus
  • BMC HealthNet Mass Health MCO/ACO
  • Cigna (PAL #'s)
  • Commonwealth Care Alliance
  • Fallon Community HealthCare
  • Great-West Healthcare (formally One Health Plan)
  • Harvard Pilgrim Health Plan - ACD
  • Harvard Pilgrim Health Plan - PBO
  • Health Care Value Management (HCVM)
  • Humana/Choice Care PPO
  • Maine Community Health Options (MCHO)
  • MassHealth
  • Medicare
  • Medicare - ACD
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • OSW - Vermont
  • Private Health Care Systems (PHCS)
  • Railroad Medicare
  • Railroad Medicare - ACD
  • TriCare
  • Tufts Health Plan
  • Unicare
  • United Healthcare (non-HMO) - ACD
  • United Healthcare (non-HMO) - PBO
  • Well Sense Pediatrics

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.

Patient Age Group
Provider Gender


Dr. Atlas received his MD degree from Columbia College of Physicians and Surgeons, and a master's degree from the Harvard School of Public Health. He trained in internal medicine at Massachusetts General Hospital (MGH) and completed a fellowship in general medicine at Harvard Medical School. Dr. Atlas is an Associate Professor of Medicine at Harvard Medical School and a Physician in the Division of General Internal Medicine at MGH where he is a practicing primary care physician. He is the Director of the primary care practice-based research and quality network and the Medical Director implementing population health management within primary care practices at MGH. He is a medical editor for Healthwise, a non-profit company with a mission to help people make better health decisions, and with UpToDate, a comprehensive evidence-based electronic clinical information resource for clinicians.

Research & Publications

Research Summary

Dr. Atlas has received research support from the National Institutes of Health and Agency for Healthcare Research and Quality. He is a health services researcher with content expertise in spine disorders, cancer prevention, chronic disease management and population health. His research addresses how health information technology can foster population-based, patient-centered cancer prevention and chronic disease services. He has also developed shared decision making programs for patients with spine conditions in his role as medical editor for the Informed Medical Decisions Foundation, now part of Healthwise

View my most recent publications at PubMed

News & Events

  • What makes patients complex? Ask their primary care physicians

    Being able to define and measure patient complexity has important implications for how care is organized, how physicians and health care systems are paid, and how resources are allocated. A study by MGH researchers finds that primary care physicians define patient complexity using more factors than are used in common approaches.

  • Workers' Compensation Patients Get Less Benefit from Back Surgery

    Surgery provides better results than nonsurgical treatment for most patients with back pain related to a herniated disk - but not for those receiving workers' compensation for work-related injuries, according to a study in the journal Spine.

  • Patient-Physician "Connectedness" Affects Quality of Care

    A new study finds that patients who are connected to a specific primary care physician are more likely to receive guideline-consistent care than those who are connected to a practice but not a physician.


Internal Medicine Associates Team 2
15 Parkman Street
Boston, MA 02114-3117
Phone: 617-724-6200
Fax: 617-724-0393