Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marvin Isbell, MD

Surgery Physician in Norman, OK · enumerated 2007.

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

National Provider Identifier

1194853226

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Registry record

Entity type Individual (Type 1)

Name Marvin Isbell

Credential MD

Sex Male

Practice address 500 E Robinson St, Suite 2300, Norman, OK, 73071

Phone (405) 329-4102

Fax (405) 364-3476

Enumeration date Mar 1, 2007

Last updated in NPPES Feb 22, 2016

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 121484 (NC) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 26881 (OK) 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

How do I verify Marvin Isbell's NPI record?

Cross-check NPI 1194853226 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1194853226 active?

Yes, as of the latest NPPES snapshot, NPI 1194853226 is active (record last updated 2016-02-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-22.