Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Barnhill, DO

Pediatrics Physician in Johnston, IA · enumerated 2005.

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

National Provider Identifier

1396721676

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Registry record

Entity type Individual (Type 1)

Name Mark A Barnhill

Credential DO

Sex Male

Practice address 8101 Birchwood Ct, Suite N, Johnston, IA, 50131

Phone (515) 471-9243

Fax (515) 471-9319

Enumeration date Dec 19, 2005

Last updated in NPPES May 22, 2012

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 01667 (IA) 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
1396721676	Medicaid	IA	-
0174565	Medicaid	IA	-
4174565	Medicaid	IA	-
370015258	Other	IA	RR MEDICARE

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 Barnhill's NPI record?

Cross-check NPI 1396721676 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396721676 active?

Yes, as of the latest NPPES snapshot, NPI 1396721676 is active (record last updated 2012-05-22).

Other providers at this practice address

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Iowa Physicians Clinic Medical Foundation General Practice Physician · Johnston, IA NPI 1891127502 Iowa Physicians Clinic Medical Foundation General Practice Physician · Johnston, IA NPI 1619309325 Lynna Sikora Nurse Practitioner · Johnston, IA NPI 1881174498

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-22.