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Alexander Nelson Rock, MD

Otolaryngology Physician in Columbus, OH · enumerated 2015.

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

National Provider Identifier

1013398833

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Registry record

Entity type Individual (Type 1)
Name Alexander Nelson Rock
Credential MD
Sex Male
Practice address 915 Olentangy River Rd Ste 4000, Columbus, OH, 43212
Phone (614) 293-9215
Fax (614) 293-1923
Enumeration date Jun 17, 2015
Last updated in NPPES Mar 13, 2020

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License M15103 (ID) Secondary
207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 35.134739 (OH) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Alexander Rock?
Alexander Rock is registered in NPPES with the primary taxonomy of Otolaryngology Physician. 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 2020-03-13.