Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Olga Melendez-Martinez, MD
Nephrology Physician in Humacao, PR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649381856
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Registry record
Entity type Individual (Type 1)
Name Olga Melendez-Martinez
Credential MD
Sex Female
Practice address Hospital Ryder, Humacao, PR, 00791
Phone (787) 923-3246
Enumeration date Aug 31, 2006
Last updated in NPPES Feb 24, 2012
Taxonomy & licenses
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 |
|---|---|---|---|
| 212025 | Other | - | PREFERRED HEALTH PLAN |
| 066313 | Other | - | LA CRUZ AZUL DE PUERTO RI |
| 29495 | Other | - | TRIPLE S |
| 995122 | Other | - | MEDICARE MUCHO MAS |
| 9280005 | Other | - | HUMAN HEALTH INSURANCE |
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
How do I verify Olga Melendez-Martinez's NPI record?
Cross-check NPI 1649381856 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1649381856 active?
Yes, as of the latest NPPES snapshot, NPI 1649381856 is active (record last updated 2012-02-24).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-24.