Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Marcy G Southwell, PA C

Medical Physician Assistant in Concord, NH · enumerated 2006.

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

National Provider Identifier

1306882881

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Marcy G Southwell

Credential PA C

Sex Female

Practice address 60 Commercial St, Suite 404, Concord, NH, 03301

Phone (603) 228-1763

Fax (603) 228-7088

Enumeration date Jun 21, 2006

Last updated in NPPES Dec 14, 2020

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 0391P (NH) Primary

Other identifiers

Identifier	Type	State	Issuer
30332153	Medicaid	NH	-

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

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.

What specialty is Marcy Southwell?

Marcy Southwell is registered in NPPES with the primary taxonomy of Medical Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-14.