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

Ms. Mary Catherine Hess, FNP, APRN-BC

Q: What is the NPI number for Mary Hess?

The National Provider Identifier (NPI) for Mary Hess is 1346249570, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Picayune, MS · enumerated 2005.

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

National Provider Identifier

1346249570

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Catherine Hess

Credential FNP, APRN-BC

Sex Female

Practice address Picayune, MS, 39466

Phone (769) 242-1700

Fax (769) 242-2148

Enumeration date Jul 19, 2005

Last updated in NPPES Jul 21, 2022

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 R893889 (MS) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN092686 (GA) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024167221 (VA) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 893889 (MS) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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 Mary Hess?

The National Provider Identifier (NPI) for Mary Hess is 1346249570, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Hess practice?

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

Other providers at this practice address

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Ujwal Meka Emergency Medicine Physician · Picayune, MS NPI 1023197142 Bryan Krieger Nurse Practitioner · Picayune, MS NPI 1124396403 Ochsner Mississippi, LLC Cardiovascular Disease Physician · Picayune, MS NPI 1265050942 Michael Stephens Family Nurse Practitioner · Picayune, MS NPI 1508470568 Ochsner Mississippi, LLC Internal Medicine Physician · Picayune, MS NPI 1881296036

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.