About Our Primary Care Practice

Practice Staff

Spencer Amesbury, MD
Karenjeet Chahal, MD
Gail Ellis, MD
Neeraj Mahajan, MD
Tamarah Brousseau, PA
Lauren LoMonaco, NP
Christine O’Connor, NP
Jennifer You, NP

Off-Hours Coverage

  • Answering service
  • Call group availability 24/7

On-Site Services

  • Electronic Medical Records
  • Phlebotomy
  • EKGs

Major Insurances Accepted

We accept most major insurance plans. Please call ahead to determine if your insurance is accepted.

Practice Philosophy


Lahey Health, as a leader in healthcare innovation and excellence, consistently applies performance improvement to its family-centered healthcare environment. The board of trustees, medical staff and employees achieve this goal by continually improving quality, efficiency and cost effectiveness, while maintaining both respect and compassion for our patients.


Lahey Health is committed to providing the highest quality of care to all individuals who can benefit from our continuum of care. Our concept of care broadly embraces the health, well-being and dignity of the patients we serve.


For more than a century, the hospitals of Lahey Health have provided healthcare services to their communities, working to identify the needs of the community and devoting the necessary resources to meeting those needs. Our goal is to reach out to and be a reflection of the diverse populations we serve and to assist each community member in achieving their highest level of health, regardless of race, color, creed, national origin, disability, age, or ability to pay.