Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mackinleigh Isherwood, PHARMD

Pharmacist in Westbrook, ME · enumerated 2023 · practices at Mainehealth.

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

National Provider Identifier

1861275687

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Registry record

Entity type Individual (Type 1)

Name Mackinleigh Isherwood

Credential PHARMD

Sex Female

Practice address 340 County Rd, Westbrook, ME, 04092

Phone (207) 662-1800

Enumeration date Aug 15, 2023

Last updated in NPPES Aug 15, 2023

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PR69309 (ME) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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

Where does Mackinleigh Isherwood practice?

The practice location on file with NPPES is in Westbrook, ME. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mackinleigh Isherwood?

The National Provider Identifier (NPI) for Mackinleigh Isherwood is 1861275687, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Mainehealth Community/Retail Pharmacy · Westbrook, ME NPI 1437723822 Jeremy Vuong Pharmacist · Westbrook, ME NPI 1598585002 Ashley Adams Pharmacist · Westbrook, ME NPI 1225910953 Aaron Thibeault Ambulatory Care Pharmacist · Westbrook, ME NPI 1568318152

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-15.