Hayward Zwerling, M.D.
NPI 1447252770 · Endocrinology, Diabetes & Metabolism Physician · Dracut, MA
Hayward Zwerling, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Dracut, MA (NPI 1447252770).
Provider details
- NPI number
- 1447252770
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 58946 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
21 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-31
- Last updated
- 2021-02-19
- Certified
- 2021-02-19
Frequently asked questions
- What is Hayward Zwerling's NPI number?
- Hayward Zwerling's National Provider Identifier (NPI) is 1447252770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hayward Zwerling's specialty?
- Hayward Zwerling is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Hayward Zwerling located?
- Hayward Zwerling's practice location on file with NPPES is 9 Loon Hill Rd Ste 300, Dracut, MA 01826-4365.
- What is Hayward Zwerling's phone number?
- The practice phone number listed in the NPPES registry for Hayward Zwerling is (978) 323-0360.
- Is Hayward Zwerling's NPI active?
- Yes — Hayward Zwerling's NPI (1447252770) is active in the NPPES registry as of the last update on 2021-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.