Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark John Van Ess, D.O.

Otology & Neurotology Physician in Springfield, MO · enumerated 2007.

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

National Provider Identifier

1841404613

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Registry record

Entity type Individual (Type 1)

Name Mark John Van Ess

Credential D.O.

Sex Male

Practice address 1229 E Seminole St Ste 520, Springfield, MO, 65804

Phone (417) 820-5750

Fax (417) 820-5066

Enumeration date May 10, 2007

Last updated in NPPES Aug 4, 2011

Taxonomy & licenses

207YX0901X Otology & Neurotology Physician Allopathic & Osteopathic Physicians · License 2009014117 (MO) 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
1841404613	Medicaid	MO	-

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

Is NPI 1841404613 active?

Yes, as of the latest NPPES snapshot, NPI 1841404613 is active (record last updated 2011-08-04).

How do I verify Mark Van Ess's NPI record?

Cross-check NPI 1841404613 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-04.