Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Carmen Casillas-Sweeney, R.PH.

Pharmacist in Nashua, NH · enumerated 2019.

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

National Provider Identifier

1902367212

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Registry record

Entity type Individual (Type 1)

Name Carmen Casillas-Sweeney

Credential R.PH.

Sex Female

Practice address 45 High St, Nashua, NH, 03060

Phone (603) 816-1966

Fax (603) 816-7993

Enumeration date Mar 28, 2019

Last updated in NPPES Mar 28, 2019

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 3077 (NH) Primary

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 Carmen Casillas-Sweeney?

Carmen Casillas-Sweeney 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.

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Carol Furlong Mental Health Counselor · Nashua, NH NPI 1124014873 Pushpa Mudan Emergency Medicine Physician · Nashua, NH NPI 1528000890 Harbor Homes, Inc. Federally Qualified Health Center (FQHC) · Nashua, NH NPI 1699705079 Michelle Leclerc Nurse Practitioner · Nashua, NH NPI 1124135637 Vicktor Senat General Practice Dentistry · Nashua, NH NPI 1487757647 Sara Bucknam Clinical Social Worker · Nashua, NH NPI 1912057514 Ajay Gupta Pharmacist · Nashua, NH NPI 1629294855 Elizabeth Cox Mental Health Counselor · Nashua, NH NPI 1841485505

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-28.