Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Melissa Ann O'Brien, RDH
Dental Hygienist in Columbus, OH · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770722746
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Registry record
Entity type Individual (Type 1)
Name Mrs. Melissa Ann O'Brien
Credential RDH
Sex Female
Practice address 420 N James Rd, Columbus, OH, 43219
Phone (614) 257-5430
Fax (614) 388-7510
Enumeration date Feb 13, 2009
Last updated in NPPES Feb 13, 2009
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 Melissa O'Brien?
Melissa O'Brien is registered in NPPES with the primary taxonomy of Dental Hygienist. 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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-13.