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

Dean R Dennis, M.D.

Internal Medicine Physician in Media, PA · enumerated 2006.

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

National Provider Identifier

1801820980

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Registry record

Entity type Individual (Type 1)

Name Dean R Dennis

Credential M.D.

Sex Male

Practice address Media, PA, 19063

Phone (610) 453-6905

Enumeration date Jul 11, 2006

Last updated in NPPES Aug 23, 2007

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 MD067329L (PA) Primary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD067329L (PA) 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 Dean Dennis?

Dean Dennis 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-23.