Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark David Imwalle, MD

Diagnostic Radiology Physician in Fairfield, OH · enumerated 2005.

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

National Provider Identifier

1740284538

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Registry record

Entity type Individual (Type 1)

Name Mark David Imwalle

Credential MD

Sex Male

Practice address 3000 Mack Rd, Fairfield, OH, 45014

Phone (513) 870-7024

Fax (513) 965-8091

Enumeration date Jun 9, 2005

Last updated in NPPES Feb 25, 2008

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 35031812I (OH) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
0349644	Medicaid	OH	-
64781099	Medicaid	KY	-

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 Mark Imwalle's NPI record?

Cross-check NPI 1740284538 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1740284538 active?

Yes, as of the latest NPPES snapshot, NPI 1740284538 is active (record last updated 2008-02-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-25.