Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Lois Mallalieu

Pharmacist in Southborough, MA · enumerated 2016.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1841648706

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Lois Mallalieu

Sex Female

Practice address Southborough, MA, 01772

Phone (508) 481-5800

Enumeration date Jun 1, 2016

Last updated in NPPES Jun 1, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 17999 (MA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Lois Mallalieu's NPI record?

Cross-check NPI 1841648706 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1841648706 active?

Yes, as of the latest NPPES snapshot, NPI 1841648706 is active (record last updated 2016-06-01).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-06-01.