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

Dr. David Herion, M.D.

Internal Medicine Physician in Chevy Chase, MD · enumerated 2013.

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

National Provider Identifier

1326477092

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. David Herion

Credential M.D.

Sex Male

Practice address Chevy Chase, MD, 20815

Phone (301) 496-7734

Enumeration date Nov 4, 2013

Last updated in NPPES Nov 4, 2013

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 D62310 (MD) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 37985 (NC) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is David Herion?

David Herion 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.

Other providers at this practice address

Browse all →

Leslie Kessler Speech-Language Pathologist · Chevy Chase, MD NPI 1306978085

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-11-04.