William M Sullivan, M.D.
Endocrinology, Diabetes & Metabolism
William M Sullivan is an Endocrinology, Diabetes & Metabolism specialist based in Boston, MA with over 46 years of clinical experience. Offers virtual telehealth visits.
With over 46 years in internal medicine, William M Sullivan, M.D. is a long-established endocrinology, diabetes & metabolism specialist in Boston. A Georgetown University School of Medicine graduate since 1980, he brings 46+ years of experience. CMS Medicare data shows his patients commonly have hypertension, diabetes, and high cholesterol.
Older · 5293dNPPES updated 2011-11-28 · verify NPI on CMS · Verify license at Massachusetts Board of Registration in Medicine
Contact & Location
Practice Location
Joslin Diabetes Center One Joslin Place, Boston, MA 02215
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, Diabetes, and High Cholesterol.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↑ More patients than average (+41%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+19%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-11%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+3%) — a focus area for this doctor
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-8%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1980
Georgetown University School of Medicine
46 years in practice
Senior practitioner
Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, adrenal disorders, pituitary conditions, and polycystic ovary syndrome (PCOS).
Taxonomy: 207RE0101X
Education & Training
Georgetown University School of Medicine (Class of 1980)
Mailing address
Joslin Clinic, Inc One Joslin Place, Boston, MA 02215-5304
Differs from practice location
Virtual Endocrinology, Diabetes & Metabolism Care With William M Sullivan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with William M Sullivan for blood pressure monitoring, diabetes check-ins, cholesterol management — no travel to Boston required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about William M Sullivan
NPI records show Dr. Sullivan as active with telehealth listed in Boston, MA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (617) 732-2645.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact William M Sullivan
Practice Location
Joslin Diabetes Center One Joslin Place, Boston, MA 02215
Mailing Address
Joslin Clinic, Inc One Joslin Place, Boston, MA 02215-5304
This is a provider directory. Contact the office directly to schedule appointments.
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