Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Erin Duff, N.P.

Q: What is the NPI number for Erin Duff?

The National Provider Identifier (NPI) for Erin Duff is 1629329867, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Knox, IN · enumerated 2012.

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

National Provider Identifier

1629329867

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Registry record

Entity type Individual (Type 1)

Name Erin Duff

Credential N.P.

Sex Female

Practice address 104 E Culver Rd Ste 102, Knox, IN, 46534

Phone (574) 772-7918

Fax (574) 772-0894

Enumeration date Sep 27, 2012

Last updated in NPPES Dec 14, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 28172170A (IN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71004187A (IN) Primary

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

Other identifiers

Identifier	Type	State	Issuer
000000837367	Other	IN	BCBS
201116160	Medicaid	IN	-

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

Where does Erin Duff practice?

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

What is the NPI number for Erin Duff?

The National Provider Identifier (NPI) for Erin Duff is 1629329867, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Thomas Browne Family Medicine Physician · Knox, IN NPI 1548277288 Jennifer Frasure Family Nurse Practitioner · Knox, IN NPI 1134213168 Sandra Ringer Clinical Social Worker · Knox, IN NPI 1023269040 Emily Shin Family Nurse Practitioner · Knox, IN NPI 1841658689 Autumn Kirk Family Nurse Practitioner · Knox, IN NPI 1912482936 Tiffany Bowser Family Nurse Practitioner · Knox, IN NPI 1427645597 Joos Moerland Family Nurse Practitioner · Knox, IN NPI 1710638432

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-14.