Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Hayward Keith Zwerling, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1447252770

Dr. Hayward Keith Zwerling, MD is an Endocrinology, Diabetes & Metabolism Physician in Dracut, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

9 Loon Hill Rd Ste 300
Dracut, MA 01826-4365
Phone: (978) 323-0360
Fax: (978) 323-0362
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 58946 (MA)

Record details

NPI number1447252770
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 31, 2005
Last updated in NPPESFebruary 19, 2021
Certification dateFebruary 19, 2021