Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. David K Oliver, RN, CNN, CRNI

Nephrology Registered Nurse in Bethesda, MD · enumerated 2006.

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

National Provider Identifier

1649370040

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. David K Oliver

Credential RN, CNN, CRNI

Sex Male

Practice address 8901 Wisconsin Ave, Bldg 9, 1st Floor, Nephrology Clinic, Bethesda, MD, 20889

Phone (301) 295-7812

Fax (301) 400-1040

Enumeration date Sep 25, 2006

Last updated in NPPES Aug 22, 2012

Taxonomy & licenses

163WN0300X Nephrology Registered Nurse Nursing Service Providers · License R075503 (MD) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

How do I verify David Oliver's NPI record?

Cross-check NPI 1649370040 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1649370040 active?

Yes, as of the latest NPPES snapshot, NPI 1649370040 is active (record last updated 2012-08-22).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-22.