Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Xonna Clark, MS, CNS, LDN
Nutritionist in Laurel, MD · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649676842
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Registry record
Entity type Individual (Type 1)
Name Ms. Xonna Clark
Credential MS, CNS, LDN
Sex Female
Practice address 9115 Erfurt Ct, Laurel, MD, 20708
Phone (704) 516-6973
Enumeration date Nov 15, 2014
Last updated in NPPES Nov 15, 2014
Taxonomy & licenses
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.
Frequently asked questions
What specialty is Xonna Clark?
Xonna Clark is registered in NPPES with the primary taxonomy of Nutritionist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-15.