Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Preston, MD

Psychiatry Physician in Creston, IA · enumerated 2005.

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

National Provider Identifier

1811987043

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Registry record

Entity type Individual (Type 1)

Name Mark A Preston

Credential MD

Sex Male

Practice address 1700 W Townline St, Creston, IA, 50801

Phone (641) 782-2131

Fax (641) 782-6425

Enumeration date Oct 27, 2005

Last updated in NPPES Nov 8, 2016

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 25526 (IA) 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
0241042	Medicaid	IA	-
11471	Other	IA	MIDLANDS CHOICE
1811987043	Medicaid	IA	-
28592	Other	IA	WELLMARK
IA0105	Other	IA	JOHN DEERE

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 1811987043 active?

Yes, as of the latest NPPES snapshot, NPI 1811987043 is active (record last updated 2016-11-08).

How do I verify Mark Preston's NPI record?

Cross-check NPI 1811987043 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 2016-11-08.