Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew A. Siwicki, RPH

Pharmacist in Grantsville, WV · enumerated 2007 · practices at Minnie Hamilton Health Care Center Inc.

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

National Provider Identifier

1861544678

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Registry record

Entity type Individual (Type 1)

Name Matthew A. Siwicki

Credential RPH

Sex Male

Practice address 186 Hospital Dr, Grantsville, WV, 26147

Phone (304) 354-9244

Fax (304) 354-9323

Enumeration date Jan 18, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RP0005958 (WV) Primary

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

Other identifiers

Identifier	Type	State	Issuer
RP0005958	Other	WV	PHARMACIST

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 is the NPI number for Matthew Siwicki?

The National Provider Identifier (NPI) for Matthew Siwicki is 1861544678, a Type 1 (individual) record in the CMS NPPES registry.

Where does Matthew Siwicki practice?

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

Other providers at this practice address

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