Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jason Edward Grennan, MD

Diagnostic Radiology Physician in Omaha, NE · enumerated 2006.

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

National Provider Identifier

1457313314

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Registry record

Entity type Individual (Type 1)

Name Dr. Jason Edward Grennan

Credential MD

Sex Male

Practice address 17310 Wright St Ste 103, Omaha, NE, 68130

Phone (833) 228-6889

Fax (877) 853-0376

Enumeration date Apr 5, 2006

Last updated in NPPES Sep 23, 2025

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 9563A (WY) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License M9390 (ID) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 2005019089 (MO) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 22159 (NE) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 15088 (ND) 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 Jason Grennan?

Jason Grennan is registered in NPPES with the primary taxonomy of Diagnostic Radiology 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-23.