Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Armando Oliva, M.D.

Neurology Physician in Bethesda, MD · enumerated 2005.

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

National Provider Identifier

1164422200

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Registry record

Entity type Individual (Type 1)

Name Dr. Armando Oliva

Credential M.D.

Sex Male

Practice address National Naval Medical Center, 8901 Wisconsin Ave, Bethesda, MD, 20889

Phone (301) 295-4770

Enumeration date Jul 29, 2005

Last updated in NPPES Jul 13, 2026

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 20881 (DC) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Armando Oliva?

Armando Oliva is registered in NPPES with the primary taxonomy of Neurology 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 2026-07-13.