Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Shaughnessy, N.P.

Psychiatric/Mental Health Nurse Practitioner in Scarborough, ME · enumerated 2006.

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

National Provider Identifier

1104880350

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Registry record

Entity type Individual (Type 1)

Name Mark Shaughnessy

Credential N.P.

Sex Male

Practice address 15 Pleasant Hill Rd Ste 204, Scarborough, ME, 04074

Phone (207) 560-3770

Fax (207) 560-3128

Enumeration date Apr 14, 2006

Last updated in NPPES Jan 23, 2023

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CNP81591 (ME) Primary

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 51968 (ME) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 Mark Shaughnessy?

Mark Shaughnessy is registered in NPPES with the primary taxonomy of Psychiatric/Mental Health Nurse Practitioner. 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-23.