1. Home
  2. Directory
  3. Massachusetts
  4. Dracut
  5. Internal Medicine
  6. NPI Profile

DR. HAYWARD KEITH ZWERLING M.D.
NPI 1447252770
Internal Medicine - Endocrinology, Diabetes & Metabolism in Dracut, MA

Active since May 31, 2005
9 LOON HILL RD STE 300, DRACUT, MA 01826(978) 323-0360(978) 323-0362 Get Directions Write a Review

NPPES record last updated: February 19, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Hayward Keith Zwerling M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. HAYWARD KEITH ZWERLING M.D. (NPI 1447252770) is an individual endocrinology, diabetes & metabolism provider in Dracut, Massachusetts, licensed in Massachusetts (58946) and active in the NPI registry since May 2005.

NPPES Registry Identity

NPI1447252770
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. HAYWARD KEITH ZWERLINGCredential: M.D.
Location Address9 LOON HILL RD STE 300Dracut, MA 01826-4365
Mailing Address9 Loon Hill Rd Ste 300Dracut, MA 01826-4365 · (978) 323-0360 · Fax (978) 323-0362
Phone(978) 323-0360
Fax(978) 323-0362
Sole ProprietorYes
Enumeration DateMay 31, 2005
Last NPPES UpdateFebruary 19, 2021
NPPES CertifiedFebruary 19, 2021
✔ NPI 1447252770 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in MA · 58946
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
9 LOON HILL RD STE 300, Dracut, MA 01826
Open in Google Maps ↗

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Hayward Zwerling's NPI number?

The NPI number for Hayward Zwerling is 1447252770. It was assigned to this individual provider in the NPPES registry on May 31, 2005.

Where is Hayward Zwerling located?

Hayward Zwerling practices at 9 Loon Hill Rd Ste 300, Dracut, MA 01826. The listed phone number is (978) 323-0360.

What is Hayward Zwerling's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Hayward Zwerling was last updated on February 19, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.