WILLIAM JAMES DUMMER DDS
NPI 1336908631
Dentist in Glendale, WI

Q: What is William Dummer's NPI number?

The NPI number for William Dummer is 1336908631. It was assigned to this individual provider in the NPPES registry on March 18, 2024.

Q: What is William Dummer's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: When was this NPI record last updated?

The NPPES record for William Dummer was last updated on April 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since March 18, 2024PECOS Enrolled

2501 W SILVER SPRING DR STE 3, GLENDALE, WI 53209(414) 363-9980(414) 363-9981 Get Directions Write a Review

NPPES record last updated: April 22, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 22, 2026, May 5, 2025, Jun 26, 2024 (3 updates tracked since 2024).

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About William James Dummer Dds NPPES

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

WILLIAM JAMES DUMMER DDS (NPI 1336908631) is an individual dentist in Glendale, Wisconsin, licensed in Wisconsin (6002094) and active in the NPI registry since March 2024. He is enrolled in Medicare PECOS and maintains a secondary practice location in Maywood.

NPPES Registry Identity

NPI1336908631

Entity TypeIndividualMale

Primary Taxonomy122300000X

Provider Legal NameWILLIAM JAMES DUMMERCredential: DDS

Location Address2501 W SILVER SPRING DR STE 3Glendale, WI 53209-4217

Mailing Address2501 W Silver Spring Dr Ste 3Glendale, WI 53209-4217 · (414) 363-9980 · Fax (414) 363-9981

Phone(414) 363-9980

Fax(414) 363-9981

Sole ProprietorNo

Enumeration DateMarch 18, 2024

Last NPPES UpdateApril 22, 20263 updates tracked since enumeration

NPPES CertifiedApril 22, 2026

✔ NPI 1336908631 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in WI · 6002094

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

Also ListedDentist · General PracticeTaxonomy 1223G0001X · License 019035929 (IL)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

2501 W SILVER SPRING DR STE 3, Glendale, WI 53209

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Secondary Practice Location 1

Location 12160 S 1st AveMaywood, IL 60153-3328 · Phone (612) 839-9403

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William James Dummer Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Dummer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Board Of Trustees Of The University Of Illinois

88 mi

Federally Qualified Health Center (FQHC)

1220 S. WOOD STREET, UIH-MILE SQUARE HEALTH CENTER
Chicago, IL 60608

Reassigned Medicare billing, Illinois enrollment
113 clinicians in this Medicare group

NPI 1669493466 (312) 413-1261

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53209 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$82.92 typical visit price

range $53.90 – $163.24

Typical copayment $20.73 (range $13.47 – $40.81)

Most-billed visit code 99203

Established Patient

$67.37 typical visit price

range $17.40 – $133.76

Typical copayment $16.84 (range $4.35 – $33.44)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

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

TRUE DENTAL MEDPOINT, LLC

Clinic/Center (Dental)

2501 W SILVER SPRING DR STE 3
MILWAUKEE, WI 53209

Milwaukee County (414) 454-9844

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 Dummer's NPI number?

The NPI number for William Dummer is 1336908631. It was assigned to this individual provider in the NPPES registry on March 18, 2024.

Where is William Dummer located?

William Dummer practices at 2501 W Silver Spring Dr Ste 3, Glendale, WI 53209. The listed phone number is (414) 363-9980.

What is William Dummer's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Is William Dummer enrolled in Medicare?

Yes. William Dummer is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Dummer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Dummer reassigns Medicare benefits to The Board Of Trustees Of The University Of Illinois (Chicago, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Dummer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Dummer accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, Delta Dental of Wisconsin, Inc. and Florida Combined Life and 3 other insurers list William Dummer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Dummer was last updated on April 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.