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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JEFFREY HA MD
NPI 1891479382
Internal Medicine in Westborough, MA

Active since June 14, 2023
900 UNION ST, WESTBOROUGH, MA 01581(508) 871-0700(508) 616-4411 Get Directions Write a Review

NPPES record last updated: July 23, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 23, 2026, Jun 14, 2023 (2 updates tracked since 2023).

About Jeffrey Ha Md NPPES

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

JEFFREY HA MD (NPI 1891479382) is an individual internal medicine provider in Westborough, Massachusetts, licensed in Massachusetts (1028643) and active in the NPI registry since June 2023.

NPPES Registry Identity

NPI1891479382
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJEFFREY HACredential: MD
Location Address900 UNION STWestborough, MA 01581-5408
Mailing Address900 Union StWestborough, MA 01581-5408 · (508) 871-0700 · Fax (508) 616-4411
Phone(508) 871-0700
Fax(508) 616-4411
Sole ProprietorYes
Enumeration DateJune 14, 2023
Last NPPES UpdateJuly 23, 20262 updates tracked since enumeration
NPPES CertifiedJuly 23, 2026
✔ NPI 1891479382 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 1028643
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
900 UNION ST, Westborough, MA 01581
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JUDITH A MCNICHOLAS MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 871-0700
QUEST DIAGNOSTICS MASSACHUSETTS LLC
Clinical Medical Laboratory
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (866) 697-8378
KERRIE MCFEETERS N.P.
Nurse Practitioner (Pediatrics)
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 898-2338
SWATI S SANE M.D.
Pediatrics
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 898-2338
RELIANT MEDICAL GROUP
Optometrist
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 856-9599
NINAD N SAMANT MD
Internal Medicine
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 871-0700
SUSAN E KELLOGG PA
Physician Assistant
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 871-0700
MARGARET R HINES MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
900 UNION ST
WESTBOROUGH, MA 01581
Worcester County (508) 870-9350

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 Jeffrey Ha's NPI number?

The NPI number for Jeffrey Ha is 1891479382. It was assigned to this individual provider in the NPPES registry on June 14, 2023.

Where is Jeffrey Ha located?

Jeffrey Ha practices at 900 Union St, Westborough, MA 01581. The listed phone number is (508) 871-0700.

What is Jeffrey Ha's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Jeffrey Ha was last updated on July 23, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.