Dr. William C Madsen , DDS
Dentist - General Practice • Mcallen, TX
Notice of NPI Deactivation & Inactive Practice Status
According to official public domain records published by CMS (Centers for Medicare & Medicaid Services) in the National Provider Identifier (NPPES) Registry, Dr. William Madsen has officially deactivated this NPI record and ceased active healthcare practice.
Professional Overview & Biography Verified Profile Summary
Dr. William Madsen, DDS was a registered Dentist - General Practice practicing in Mcallen, TX. Throughout an active medical career spanning 19 years, Dr. Madsen provided care at the practice location at 820 NOLANA STREET until profile deactivation on 2026-06-04.
Practice Location & Contact Primary Location
820 Nolana Street
Suite B
Mcallen, TX 785043043
Specialty Benchmarks & Practice Insights
Comparative analytics for Dentist - General Practice in Mcallen, TX
Practicing in Mcallen, TX (10570 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
NUCC Taxonomy Code: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Record deactivated on June 04, 2026
NPI status registered as active in NPPES database
Registered at 820 NOLANA STREET, SUITE B, MCALLEN, TX 785043043 (Tel: 9566865429)
Registered at 820 NOLANA STREET, SUITE B, MCALLEN, TX 785043043 (Tel: 9566865429)
Recorded as WILLIAM MADSEN, DDS
Dentist (License #9090 in TX)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
Sign in to leave a review for Dr. William Madsen
Only verified registered users can submit ratings, post feedback, and upload facility photos.
NPI Administrative Meta
Mailing Address
820 Nolana Street, Suite B
Mcallen, TX 785043043
Phone: 9566865429
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.