NPI Portal NPI Lookup & Verification

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

Ms. Crystal Lynn Martin, AGNP-BC

Nurse Practitioner in Roxboro, NC · enumerated 2022 · practices at Person Surgical Associates PA.

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

National Provider Identifier

1871246215

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Registry record

Entity type Individual (Type 1)
Name Ms. Crystal Lynn Martin
Credential AGNP-BC
Sex Female
Practice address Roxboro, NC, 27573
Phone (336) 599-3212
Enumeration date Jan 26, 2022
Last updated in NPPES Jan 20, 2026

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License MART-VWNGJ (NC) Primary

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.

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Frequently asked questions

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.
What specialty is Crystal Martin?
Crystal Martin is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-20.