Mark A Barnhill, DO
Mark A Barnhill is a Pediatrics Physician provider (Pediatrics) practicing in Johnston, IA, registered in the NPPES registry with NPI 1396721676 since 2005. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1396721676 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark A Barnhill |
| Credential | DO |
| Sex | Male |
| Practice address | 8101 BIRCHWOOD CT, SUITE N, Johnston, IA, 50131 |
| Phone | 5154719243 |
| Fax | 5154719319 |
| Enumeration date | 2005-12-19 |
| Last updated in NPPES | 2012-05-22 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208000000X | Pediatrics Physician | Primary | 01667 | IA |
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 |
Copy-ready billing details
Provider: Mark Barnhill, DO NPI: 1396721676 Taxonomy: 208000000X (Pediatrics Physician) Address: 8101 BIRCHWOOD CT, SUITE N, Johnston, IA, 50131
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1891127502 | Iowa Physicians Clinic Medical Foundation | Organization | General Practice Physician | Johnston, IA |
| 1619309325 | Iowa Physicians Clinic Medical Foundation | Organization | General Practice Physician | Johnston, IA |
| 1881174498 | Lynna Sikora | Individual | Nurse Practitioner | Johnston, IA |
Verify this record
Cross-check NPI 1396721676 against the authoritative CMS record: view Mark A Barnhill on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2012-05-22.