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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM E. MADDEN D.D.S.
NPI 1235100595
Dentist - General Practice in Denver, CO

Active since January 26, 2006
4101 E WESLEY AVE, SUITE #4, DENVER, CO 80222(303) 758-3230(303) 758-3552 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. William E. Madden D.d.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM E. MADDEN D.D.S. (NPI 1235100595) is an individual general practice provider in Denver, Colorado, licensed in Colorado (574) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1235100595
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. WILLIAM E. MADDENCredential: D.D.S.
Location Address4101 E WESLEY AVE, SUITE #4Denver, CO 80222-6050
Mailing Address4101 E Wesley Ave, Suite #4Denver, CO 80222-6050 · (303) 758-3230 · Fax (303) 758-3552
Phone(303) 758-3230
Fax(303) 758-3552
Sole ProprietorNo
Enumeration DateJanuary 26, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1235100595 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in CO · 574
Definition
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.
4101 E WESLEY AVE, Denver, CO 80222
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Other Names 1

Professional Name (2)Dr. William E. Madden D.d.s.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. WILLIAM SCOTT ISAACS ND, DC
Chiropractor
4101 E WESLEY AVE, SUITE 11
DENVER, CO 80222
Denver County (303) 757-4433
DR. LAWRENCE MICHAEL GABLER D.D.S.
Dentist (General Practice)
4101 E WESLEY AVE, SUITE #9
DENVER, CO 80222
Denver County (303) 758-3935
DR. WILLIAM RUDOLPH NELSON D.D.S.
Dentist (General Practice)
4101 E WESLEY AVE
DENVER, CO 80222
Denver County (303) 757-5473
COLUMBINE NATURAL HEALTH CENTERS PC
Chiropractor
4101 E WESLEY AVE, SUITE 11
DENVER, CO 80222
Denver County (303) 757-4433
DR. JOHN M FLANIGAN DDS
Dentist (General Practice)
4101 E WESLEY AVE, #9
DENVER, CO 80222
Denver County (303) 758-3935
GABLER AND FLANIGAN
Dentist (General Practice)
4101 E WESLEY AVE, SUITE 9
DENVER, CO 80222
Denver County (303) 758-3935
ALEKSANDR LUTSKIY, DMD, PROFESSIONAL LLC
Dentist (General Practice)
4101 E WESLEY AVE, SUITE 4
DENVER, CO 80222
Denver County (303) 758-3230
JOHN M FLANIGAN DDS PC
Dentist (General Practice)
4101 E WESLEY AVE, STE 9
DENVER, CO 80222
Denver County (303) 758-3935

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 William Madden's NPI number?

The NPI number for William Madden is 1235100595. It was assigned to this individual provider in the NPPES registry on January 26, 2006. The provider is also known as Dr. William E. Madden D.D.S..

Where is William Madden located?

William Madden practices at 4101 E Wesley Ave Suite #4, Denver, CO 80222. The listed phone number is (303) 758-3230.

What is William Madden's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for William Madden was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.