Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Walter Deroo, MD

Q: What is the NPI number for Mark Deroo?

The National Provider Identifier (NPI) for Mark Deroo is 1982657516, a Type 1 (individual) record in the CMS NPPES registry.

Pediatrics Physician in Olathe, KS · enumerated 2006.

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

National Provider Identifier

1982657516

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Registry record

Entity type Individual (Type 1)

Name Mark Walter Deroo

Credential MD

Sex Male

Practice address 23450 College Blvd, Olathe, KS, 66061

Phone (913) 764-7788

Fax (913) 764-6088

Enumeration date May 17, 2006

Last updated in NPPES Aug 19, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 0427012 (KS) 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
100293370E	Medicaid	KS	-

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 is the NPI number for Mark Deroo?

The National Provider Identifier (NPI) for Mark Deroo is 1982657516, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Deroo practice?

The practice location on file with NPPES is in Olathe, KS. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-19.