NPI Portal NPI Lookup & Verification

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

Nelson Alexander Castaneda, M.D.

Internal Medicine Physician in Opa Locka, FL · enumerated 2012 · practices at Chen Neighborhood Medical Centers of South Florida LLC.

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

National Provider Identifier

1881958908

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Registry record

Entity type Individual (Type 1)
Name Nelson Alexander Castaneda
Credential M.D.
Sex Male
Practice address Opa Locka, FL, 33054
Phone (786) 535-7200
Fax (786) 535-7294
Enumeration date Jul 3, 2012
Last updated in NPPES Mar 3, 2022

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ME127594 (FL) Primary
261QC1500X Community Health Clinic/Center Ambulatory Health Care Facilities · License ME 127594 (FL) Secondary
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

What specialty is Nelson Castaneda?
Nelson Castaneda is registered in NPPES with the primary taxonomy of Internal Medicine 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-03.