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Castle Healthcare Inc.

Q: What type of organization is Castle Healthcare Inc.?

Castle Healthcare Inc. is registered in NPPES as a Gerontology Nurse Practitioner (its primary provider taxonomy).

Gerontology Nurse Practitioner in Durham, NC · enumerated 2008 · authorized official Marlyn Teague, Nurse Practitioner.

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

National Provider Identifier

1407025406

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Registry record

Entity type Organization (Type 2)

Legal business name Castle Healthcare Inc.

Practice address 6000 Fayetteville Rd, Durham, NC, 27713

Phone (919) 544-9021

Enumeration date Feb 22, 2008

Last updated in NPPES Mar 17, 2018

Taxonomy & classification

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Primary

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Marlyn Teague

Title Nurse Practitioner

Phone (919) 332-9547

Other identifiers

Identifier	Type	State	Issuer
1093794679	Other	NC	NPI

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Castle Healthcare Inc.?

Castle Healthcare Inc. is registered in NPPES as a Gerontology Nurse Practitioner (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-17.