Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Mark Blowen, APRN

Family Nurse Practitioner in Stratham, NH · enumerated 2005.

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

National Provider Identifier

1063494672

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Registry record

Entity type Individual (Type 1)

Name John Mark Blowen

Credential APRN

Sex Male

Practice address Stratham, NH, 03885

Phone (603) 852-0513

Enumeration date Nov 18, 2005

Last updated in NPPES Jul 19, 2016

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0297872303 (NH) Primary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License CNP81765 (ME) Secondary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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 is the NPI number for John Mark Blowen?

The National Provider Identifier (NPI) for John Mark Blowen is 1063494672, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Mark Blowen practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-19.