DR. HAYWARD KEITH ZWERLING (M.D.) – Endocrinology, Diabetes & Metabolism Physician, NPI 1447252770

Endocrinology, Diabetes & Metabolism Physician

DR. HAYWARD KEITH ZWERLING (M.D.) is a healthcare provider. based in Dracut, Massachusetts. specializing in Endocrinology, Diabetes & Metabolism Physician. They hold the professional credentials M.D.. They hold a License No. 58946 (MA). The NPI Number for DR. HAYWARD KEITH ZWERLING (M.D.) is 1447252770

Main info

Male

Sole Proprietor

42 Years Of Experience

Accepts Medicare Assignment

Name

DR. HAYWARD KEITH ZWERLING (M.D.)

NPI

1447252770

Phone

(978) 323-0360

Address

9 LOON HILL RD STE 300

Enumeration Date

31 May 2005

Last Update Date

19 February 2021

Doctor Profile

Medical School Name

STATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY

Secondary Phone

9784590018

Graduation Year

1984 (42 years ago)

PAC ID

8022023571

Group Practice PAC ID

3173626751

Professional Enrollment ID

I20060220000563

Data current as of

19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience64

Completeness75

Years active:21State licenses:1Digital endpointsOther names

Provider Addresses for DR. HAYWARD KEITH ZWERLING (M.D.)

9 LOON HILL RD STE 300
DRACUT, MA 018264365
Phone: (978) 323-0360
Fax: (978) 323-0362
Type: Mailing
20, Research Place, Chelmsford, Middlesex County, Massachusetts, 01863, United States
SUITE 300
NORTH CHELMSFORD, MA 018632412
Phone: (978) 459-0018
Fax: (978) 656-9950
Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

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Medicare Enrollment & Revalidation

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Medicare Utilization (FFS)

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No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 01826)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.

PAC ID: 3173626751View full group profile

Name	Specialty	State
BONNIE BOUCHARD (CNM)	Certified Nurse Midwife (Cnm)	ME
AUDRA D WILLIAMS (M.D.)	Family Practice, Addiction Medicine	MA
MRS. JULIE FRANCES VERGADOS SIMONEAU	-	MA
CHARMY PATEL (NP)	Nurse Practitioner	MA
MS. CATHERINE D ELIE (FNP)	-	MA
MR. ERIC ROBERT BIFOLCK (PA-C)	Physician Assistant	NC
DR. CHRISTEN PUSATERI FRAGALA (M.D.)	Family Practice	MA
AMY PODOLSKI CHANG (M.D.)	O B S T E T R I C S/ G Y N E C O L O G Y	MA
AMANDA LEIGH LIBERTY (PMHNP)	Nurse Practitioner	MA
MARIAN YOUNGE (MD)	Family Practice	MA

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Frequently asked questions

What identifier follows DR. HAYWARD KEITH ZWERLING (M.D.) across health systems?

The NPI 1447252770 uniquely identifies DR. HAYWARD KEITH ZWERLING (M.D.) in U.S. healthcare data.

Quick check: is DR. HAYWARD KEITH ZWERLING (M.D.) active?

Public NPPES data shows DR. HAYWARD KEITH ZWERLING (M.D.) with an active NPI status right now.

How should patients interpret DR. HAYWARD KEITH ZWERLING (M.D.)'s specialty?

The extract shows Endocrinology, Diabetes & Metabolism Physician for DR. HAYWARD KEITH ZWERLING (M.D.). Clinical services aligned with this taxonomy classification.

Can patients visit DR. HAYWARD KEITH ZWERLING (M.D.) in Dracut, Massachusetts?

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