NPI Portal NPI Lookup & Verification

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

Dr. Hiram Rivera Montes, MD

Rheumatology Physician in Vega Baja, PR · enumerated 2006.

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

National Provider Identifier

1316966005

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Registry record

Entity type Individual (Type 1)
Name Dr. Hiram Rivera Montes
Credential MD
Sex Male
Practice address Vega Baja, PR, 00693
Phone (787) 855-9281
Fax (787) 807-6439
Enumeration date Jul 19, 2006
Last updated in NPPES Oct 14, 2016

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

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 12012 (PR) 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 Hiram Rivera Montes?
Hiram Rivera Montes is registered in NPPES with the primary taxonomy of Rheumatology 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 2016-10-14.