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

Dr. Dennis J Oconnell, D.O.

Ophthalmology Physician in Aurora, CO · enumerated 2006 · practices at Dennis J O'Connell, Do, PC.

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

National Provider Identifier

1396763652

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Registry record

Entity type Individual (Type 1)

Name Dr. Dennis J Oconnell

Credential D.O.

Sex Male

Practice address Aurora, CO, 80016

Phone (303) 817-2105

Fax (720) 328-5369

Enumeration date Jul 17, 2006

Last updated in NPPES Apr 2, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 34076 (CO) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 34076 (CO) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
41271343	Medicaid	CO	-

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.

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Frequently asked questions

How do I verify Dennis Oconnell's NPI record?

Cross-check NPI 1396763652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396763652 active?

Yes, as of the latest NPPES snapshot, NPI 1396763652 is active (record last updated 2024-04-02).

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Dennis J O'Connell, Do, PC Ophthalmology Physician · Aurora, CO NPI 1669438669

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-02.