State provider hub
Massachusetts NPI Registry - Provider Lookup
Look up NPI numbers for healthcare providers in Massachusetts, searchable by name, specialty, and city, drawn from the public CMS NPPES data file.
256,759
providers & organizations
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Top specialties in Massachusetts
Counselor 31,832 Social Worker 24,756 Nurse Practitioner 15,757 Internal Medicine 14,270 Dentist 12,225 Student in an Organized Health Care Education/Training Program 11,407 Behavior Technician 11,191 Physical Therapist 8,277 Registered Nurse 7,956 Psychologist 7,537 Pharmacist 6,621 Physician Assistant 6,127 Clinic/Center 5,354 Developmental Therapist 5,239 Behavior Analyst 5,050 Psychiatry & Neurology 5,004 Pediatrics 4,455 Occupational Therapist 4,422 Speech-Language Pathologist 4,243 Family Medicine 2,891 Chiropractor 2,722 Dietitian, Registered 2,675 Anesthesiology 2,503 Radiology 2,402 Optometrist 2,236 Home Health 2,074 Case Manager/Care Coordinator 2,054 Emergency Medicine 2,018 Obstetrics & Gynecology 1,778 Surgery 1,682
Browse by city
Boston, MA 44,193 Worcester, MA 14,542 Springfield, MA 9,375 Cambridge, MA 5,784 Brockton, MA 4,989 Milford, MA 3,658 Framingham, MA 3,577 Fall River, MA 3,560 Lowell, MA 3,464 Newton, MA 3,341 Marlborough, MA 3,329 Quincy, MA 3,233 Brookline, MA 2,865 Burlington, MA 2,811 Lawrence, MA 2,651 New Bedford, MA 2,600 Pittsfield, MA 2,598 Beverly, MA 2,547 Waltham, MA 2,538 Plymouth, MA 2,358 Danvers, MA 2,347 Lynn, MA 2,333 Woburn, MA 2,199 Holyoke, MA 2,176 Salem, MA 2,137 Somerville, MA 2,129 Northampton, MA 2,109 Dorchester, MA 1,981 Brighton, MA 1,877 Taunton, MA 1,849 Jamaica Plain, MA 1,806 Hyannis, MA 1,724 Lexington, MA 1,708 Peabody, MA 1,639 Norwood, MA 1,526 Needham, MA 1,479 Attleboro, MA 1,463 Leominster, MA 1,458 Haverhill, MA 1,448 West Springfield, MA 1,419
Frequently asked questions
How do I look up an NPI number in Massachusetts?
Use the NPI search and select MA, or browse the specialty and city directories on this page. Every provider profile shows the NPI, taxonomy, practice address, and status.
How many healthcare providers are registered in Massachusetts?
Our latest NPPES snapshot lists 256,759 active providers and organizations with a practice location in Massachusetts.
Is this the official Massachusetts NPI registry?
No, NPI numbers are issued federally by CMS, not by states. This is a private directory built on the public CMS NPPES data file; the official registry is npiregistry.cms.hhs.gov.
Source: CMS NPPES (public data). Snapshot 2026-07-13.