About
Dr. Daniel Witt earned his MD from Mayo Clinic Alix School of Medicine and completed his Internal Medicine residency at Mayo Clinic. He also holds a Master of Data Science from Duke University, a credential that shapes his approach to health technology and patient safety. He is board certified by the American Board of Internal Medicine.
Dr. Witt currently serves in General Internal Medicine at Beth Israel Deaconess Medical Center. He also holds a faculty appointment at Harvard Medical School as an Instructor in Clinical Medicine, helping train the next generation of physicians. He is passionate about cardiovascular health, metabolic and weight management, sleep medicine, mental wellness, and regenerative aesthetics. He founded Goodhaven Health to bring the rigorous, patient-centered standards he observed at Mayo Clinic and Harvard-affiliated hospitals directly to patients in the Boston area. Boston Magazine has recognized him in its Find a Doctor listing. His hospital affiliations include Massachusetts General Hospital, Mass General Brigham, Brigham and Women's Hospital, and Beth Israel Deaconess Medical Center.
Education & Training
Medical School
Mayo Clinic Alix School of Medicine – Doctor of Medicine (MD)
Residency
Mayo Clinic – Internal Medicine Residency
Additional Training
Duke University – Master of Data Science (MS)
Certifications
Conditions Treated
Who is Dr. Witt right for?
Dr. Witt is a strong fit for adults who want a proactive, prevention-focused primary care physician. Patients managing cardiovascular risk, metabolic concerns, or weight benefit from his clinical focus. He also serves patients seeking comprehensive executive physicals and advanced cancer screening. Adults navigating sleep issues, mental wellness concerns, or travel health needs will find relevant expertise here. His regenerative aesthetics services appeal to patients who want physician-led cosmetic care alongside their primary care.
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Frequently Asked Questions
Dr. Witt specializes in executive health, internal medicine, and preventive medicine. His clinical focus includes cardiovascular health, metabolic and weight management, sleep medicine, mental wellness, and men's and women's health. He also performs physician-led regenerative aesthetic treatments, including NouvaDerm laser, Scarlet Pro microneedling, exosomes, neuromodulators, and hair restoration.
Dr. Witt earned his MD from Mayo Clinic Alix School of Medicine and completed his Internal Medicine residency at Mayo Clinic. He also holds a Master of Data Science from Duke University. That training shapes his approach to health technology and data-informed patient care.
Yes. Dr. Witt holds board certification from the American Board of Internal Medicine.
Dr. Witt holds affiliations with Massachusetts General Hospital, Mass General Brigham, Brigham and Women's Hospital, and Beth Israel Deaconess Medical Center. He currently serves in General Internal Medicine at Beth Israel Deaconess Medical Center. These affiliations allow him to coordinate specialty referrals at leading Boston-area institutions.
Yes. Dr. Witt holds a faculty appointment at Harvard Medical School as an Instructor in Clinical Medicine. In that role, he helps train the next generation of physicians.
Dr. Witt performs physician-led aesthetic treatments rooted in regenerative medicine. These include NouvaDerm laser, Scarlet Pro microneedling, exosomes, neuromodulators, and hair restoration. He integrates these services within a primary care and preventive medicine framework.
Dr. Witt offers advanced cancer screening through the Galleri test, body composition testing via DEXA scan, and dementia risk assessment. He also uses point-of-care ultrasound and wearables for remote health monitoring. These tools support his focus on early detection and proactive disease management.
Dr. Witt takes a root-cause approach to metabolic and weight health. He offers GLP-1 weight management therapies, including Wegovy and Zepbound, alongside body composition testing. His goal is to pair appropriate treatments with a broader preventive health strategy tailored to each patient.
Doctor profile last updated March 21, 2026