Online Second Opinions (OSO)

Our Specialists

Online Second Opinions (OSO) offers the widest access to the elite specialists of the Mass General Brigham system for second opinions.

The physicians providing consultations through our service are national and international leaders in medicine, research and training. The vast majority also teach future generations of doctors at Harvard Medical School. Together, they represent nearly all adult and pediatric specialties, including:

Addiction Services
Allergy/Immunology
Audioconference
Bone Marrow Transplant
Burn
Cancer Genetics
Cardiology
Critical Care
Dermatology
Ear, Nose, Throat (ENT)
Emergency Medicine
Endocrinology
Experimental Therapeutics
Gastroenterology
Genetics & Teratology
Geriatrics
Hematology
Hepatology
Infectious Disease
Infertility
Internal Medicine
Interventional Radiology
Liver Surgery
Neo-Natology
Nephrology
Neurocritical Care
Neurofibromatosis
Neurology
Neuro-Ophthalmology
Neurosurgery
Nutrition/Diet
Obstetrics-Gynecology
Oncology-Breast
Oncology-Dermatologic
Oncology-Gastrointestinal
Oncology-Genetics
Oncology-Genitourinary
Oncology-Gynecologic
Oncology-Head & Neck
Oncology-Hematologic
Oncology-Melanoma
Oncology-Neuro
Oncology-Orthopaedic
Oncology-Other
Oncology-Palliative
Oncology-Radiation
Oncology-Sarcoma
Oncology-Surgical
Oncology-Thoracic
Oncology-Thyroid
Oncology-Unknown Primary
Onc-Skin (non-Melanoma)
Ophthalmology
Oral/Maxillofacial Surgery
Orthopaedic Surgery
Pain Management
Pathology
Pediatric Allergy and Immunology

Pediatric Cardiology
Pediatric Critical Care
Pediatric Dermatology
Pediatric Endocrinology
Pediatric ENT
Pediatric Gastroenterology
Pediatric Genetics
Pediatric Hematology
Pediatric ID
Pediatric Interventional Radiology
Pediatric Nephrology
Pediatric Nephrology
Pediatric Neurology
Pediatric Neurosurgery
Pediatric Oncology
Pediatric Ophthalmology
Pediatric Orthopaedic Oncology
Pediatric Orthopedic Surgery
Pediatric Orthopedics
Pediatric Physical Medicine
Pediatric Psychiatry
Pediatric Pulmonology
Pediatric Radiation Oncology
Pediatric Rehabilitation
Pediatric Rheumatology
Pediatric Surgery
Pediatric Urology
Pediatric Vascular Surgery
Pediatric-Plastic Surgery
Physiatry
Physical Medicine
Plastic Surgery
Podiatry
Psychiatry
Pulmonology
Radiology
Rehabilitation
Renal
Renal Transplant
Rheumatology
Surgery-Breast
Surgery-Cardiac
Surgery-Endocrine
Surgery-Gastrointestinal
Surgery-General
Surgery-Gynecological
Surgery-Head & Neck
Surgery-Thoracic
Surgery-Trauma
Surgery-Vascular
Thyroid Tumors
Tuberous Sclerosis Complex
Urogynecology
Urology
Vascular Medicine
Videoconference (Contractual clients only)
Women s Health

Please note: Only Mass General Brigham physicians who are fully tenured and licensed as well as board-certified are eligible to consult through our service. Interns, residents and fellows cannot participate.

Finding the Right Match

The OSO team includes case coordinators with broad experience in matching cases with the appropriate specialists. As a result, they help ensure patients and their referring physicians receive the guidance they need along with answers to their most pressing questions.

Aaron Baggish

About Us

Our Specialists

Finding the Right Match

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