Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Antonio Riera - March, M.D.

Otolaryngology Physician in San Juan, PR · enumerated 2006.

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

National Provider Identifier

1437119518

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Registry record

Entity type Individual (Type 1)

Name Antonio Riera - March

Credential M.D.

Sex Male

Practice address Univ. of Puerto Rico, Medical Sciences Campus, Main Building, 9 Floor, A-972, Otolaryngology-Hns, San Juan, PR, 00936

Phone (787) 765-0240

Fax (787) 296-1641

Enumeration date Mar 24, 2006

Last updated in NPPES Mar 21, 2013

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 9422 (PR) Primary

207YP0228X Pediatric Otolaryngology Physician Allopathic & Osteopathic Physicians · License 9422 (PR) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
89362-OT	Other	PR	TRIPLE-S, INC.

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 specialty is Antonio Riera - March?

Antonio Riera - March 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.

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 2013-03-21.