Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Darien Keeling, MD

Surgery Physician in Randallstown, MD · enumerated 2021.

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

National Provider Identifier

1639757727

Verified

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Registry record

Entity type Individual (Type 1)

Name Darien Keeling

Credential MD

Sex Male

Practice address 5401 Old Court Rd, Randallstown, MD, 21133

Phone (410) 521-2200

Enumeration date Mar 30, 2021

Last updated in NPPES Aug 18, 2023

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License D98233 (MD) 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

Is NPI 1639757727 active?

Yes, as of the latest NPPES snapshot, NPI 1639757727 is active (record last updated 2023-08-18).

How do I verify Darien Keeling's NPI record?

Cross-check NPI 1639757727 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-18.