Mark C. Johnson, MD
Internal Medicine · Mason City, IA
UnclaimedMDNPI 1013923127
- Primary taxonomy
- 207R00000X
- Enumerated
- 2006-07-31
- Practice location
- Mason City, IA
- Last NPPES update
- 2025-07-08
State licenses
- IA · Physician · NPPES self-reportedListed on NPI record
“Listed on NPI record” means the provider reported this license to NPPES; other statuses come from the state board’s public records as of the last import. License numbers are not shown.
Source: CMS National Plan & Provider Enumeration System (NPPES) and state licensing boards. ScrubHub shows name, credential, taxonomy, practice city/state and license status only.