NPI Portal NPI Lookup & Verification

Mark Christian Bildsoe, MD

Mark Christian Bildsoe is a Diagnostic Radiology Physician provider (Radiology) practicing in Eau Claire, WI, registered in the NPPES registry with NPI 1912978529 since 2006. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum

NPI 1912978529
Entity type Individual (Type 1)
Name Mark Christian Bildsoe
Credential MD
Sex Male
Practice address 1400 BELLINGER ST, Eau Claire, WI, 54703
Phone 7158385222
Enumeration date 2006-01-31
Last updated in NPPES 2022-07-22

Taxonomy & licenses

Taxonomy code Specialty Primary License State
2085R0202X Diagnostic Radiology Physician Primary 35689 WI

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Copy-ready billing details
Provider: Mark Bildsoe, MD
NPI: 1912978529
Taxonomy: 2085R0202X (Diagnostic Radiology Physician)
Address: 1400 BELLINGER ST, Eau Claire, WI, 54703

Other providers at this practice address

NPI Name Type Specialty Location
1467456848 Ganesh Ram Individual Physician Assistant Eau Claire, WI
1841296316 Jackie Joday Individual Clinical Social Worker Eau Claire, WI
1104822238 Margaret Landry Individual Advanced Practice Midwife Eau Claire, WI
1780685404 Eric Niendorf Individual Diagnostic Radiology Physician Eau Claire, WI
1215920483 Michel Barsoum Individual Cardiovascular Disease Physician Eau Claire, WI
1790778801 William Simons Individual Psychiatry Physician Eau Claire, WI
1558357061 Jennifer Bantz Individual Obstetrics & Gynecology Physician Eau Claire, WI
1033106745 Sandeep Pangarkar Individual Hospitalist Physician Eau Claire, WI

Verify this record

Cross-check NPI 1912978529 against the authoritative CMS record: view Mark Christian Bildsoe 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

Is NPI 1912978529 active?
Yes — as of the latest NPPES snapshot, NPI 1912978529 is active (record last updated 2022-07-22).
How do I verify Mark Bildsoe's NPI record?
Cross-check NPI 1912978529 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-07-22.