FERGUS E MCKIERNAN MD
NPI 1194825596
Internal Medicine in Marshfield, WI
About Fergus E Mckiernan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FERGUS E MCKIERNAN MD (NPI 1194825596) is an individual internal medicine provider in Marshfield, Wisconsin, licensed in Wisconsin (28261) and active in the NPI registry since September 2006.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARSHFIELD, WI 54449
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Fergus Mckiernan's NPI number?
The NPI number for Fergus Mckiernan is 1194825596. It was assigned to this individual provider in the NPPES registry on September 25, 2006.
Where is Fergus Mckiernan located?
Fergus Mckiernan practices at 1000 N Oak Ave, Marshfield, WI 54449. The listed phone number is (715) 387-9313.
What is Fergus Mckiernan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
When was this NPI record last updated?
The NPPES record for Fergus Mckiernan was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.