Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William Joseph Mackilligan, R.PH

Pharmacist in Portland, ME · enumerated 2006.

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

National Provider Identifier

1992898530

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. William Joseph Mackilligan

Credential R.PH

Sex Male

Practice address 331 Veranda St, Portland, ME, 04103

Phone (800) 322-0280

Enumeration date Oct 2, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PR0002929 (ME) Primary

183500000X Pharmacist Pharmacy Service Providers · License RR1155 (NH) Secondary

183500000X Pharmacist Pharmacy Service Providers · License 15540 (MA) Secondary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH 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

What specialty is William Mackilligan?

William Mackilligan is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Linda Morrison Ophthalmology Physician · Portland, ME NPI 1023014198 Lewis Holmes Family Medicine Physician · Portland, ME NPI 1649269184 Rabee Kiwan Internal Medicine Physician · Portland, ME NPI 1992784938 Danielle Pelletier Optometrist · Portland, ME NPI 1679553713 Peter Shaw Cardiovascular Disease Physician · Portland, ME NPI 1851361398 John O'Meara Cardiovascular Disease Physician · Portland, ME NPI 1356312599 Martin'S Point Health Care, Inc Community/Retail Pharmacy · Portland, ME NPI 1760442156 Edward Quinlan Cardiovascular Disease Physician · Portland, ME NPI 1558327304

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.