Contact Us
Contact Us
Team Img
Team Img

Meet Our Team

Our physicians work collaboratively, combining decades of experience to provide thoughtful, coordinated care for every member.

Kate Isselbacher

Kate IsselbacherMD

FOUNDER AND CEO

Karen ‘Kate’ Isselbacher, MD, is the founder and CEO of Exceptional Health. With a strong lineage of physicians in her family, medicine

Read Bio
Nancy Haff

Nancy HaffMD MPH

ASSISTANT PROFESSOR OF MEDICINE, HARVARD MEDICAL SCHOOL

Dr. Haff also earned a Master of Public Health in Clinical Effectiveness from the Harvard T.H. Chan School of Public Health.

Read Bio
Daniel Gaposchkin

Daniel GaposchkinMD PhD

CLINICAL ASSOCIATE OF MEDICINE, HARVARD MEDICAL SCHOOL

Dr. Daniel Gaposchkin earned his Bachelor of Arts in Biology from the University of California, Berkeley. He then completed both his Master of Arts in Medical Science and his MD/PhD at Boston University School of Medicine. He went on to complete his residency in internal medicine at Lahey Clinic Medical Center, where he later served as both a ward attending and a preceptor for resident physicians.

Read Bio
Kevin Heaton

Kevin HeatonMD

CLINICAL INSTRUCTOR OF MEDICINE HARVARD MEDICAL SCHOOL

Dr. Kevin Heaton graduated from Columbia University’s post-baccalaureate premedical program.

Read Bio
Christine M

Christine M. HarringtonMD

INTERNAL MEDICINE SPECIALIST

Dr. Christine Harrington is an internal medicine physician with extensive experience in primary care and medical education.

Read Bio
Li Tso

Li TsoMD

ASSISTANT PROFESSOR OF MEDICINE HARVARD MEDICAL SCHOOL

Dr. Li Tso is an experienced physician and Assistant Professor of Medicine at Harvard Medical School with nearly 30 years of clinical practice at Massachusetts General Hospital.

Read Bio
Julie Coffey

Julie CoffeyANP-C

Nurse Practitioner

Julie Coffey is a nurse practitioner at Exceptional Health who brings extensive experience in primary care and a calm, attentive…

Read Bio
Amanda Perillo

Amanda PerilloPA-C

PHYSICIAN ASSISTANT

Amanda “Anoele” Perillo is a physician assistant at Exceptional Health who works closely with the practice’s physicians to support continuity,…

Read Bio

Our Exceptional Office Staff

Our office staff are highly trained professionals who ensure every aspect of your experience runs smoothly, from scheduling and referrals to follow up care and insurance coordination.

Brian Isselbacher

Brian Isselbacher

CHIEF OPERATING OFFICER
Luke Cogswell

Luke Cogswell

PATIENT CARE DIRECTOR
Cady Taft

Cady Taft

MEMBERSHIP DIRECTOR
Mason McDermid

Mason McDermid

MARKETING DIRECTOR
Mat Brockelman

Mat Brockelman

PATIENT COORDINATOR
Sarah Wozniak

Sarah Wozniak

PATIENT COORDINATOR
Stephanie Erickson

Stephanie Erickson

PATIENT COORDINATOR
Anthony Stempien

Anthony Stempien

PATIENT COORDINATOR
Kathryn O’Connor

Kathryn O’Connor

MEDICAL ASSISTANT
Dillyn Zindler

Dillyn Zindler

MEDICAL ASSISTANT
Cody Ciesielski

Cody Ciesielski

MEDICAL ASSISTANT
Heather Gary

Heather Gary

MEDICAL ASSISTANT
Jenna Aubuchon

Jenna Aubuchon

Medical Assistant
Kerry Howeson

Kerry Howeson

Medical Assistant

Hospital Affiliations

Exceptional Health partners with a trusted network of leading hospitals and specialists, giving patients streamlined access to expert care when they need it most.

Cta Shape
Exceptional Health
Cta Shape
Exceptional Health

Discover a More Personal Approach to Primary Care.

Subscribe to Our Newsletter

Receive the latest news and Updates