Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM P PAINI DDS
NPI 1427015528
Dentist - General Practice in Denver, CO

Q: What is William Paini's NPI number?

The NPI number for William Paini is 1427015528. It was assigned to this individual provider in the NPPES registry on May 1, 2006.

Q: What is William Paini's specialty?

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

Q: Is William Paini enrolled in Medicare?

No. William Paini has opted out of Medicare through May 18, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for William Paini was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days 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 May 01, 2006Opted out of Medicare · through May 18, 2027

1164 SPEER BLVD, DENVER, CO 80204(303) 246-0100(720) 222-0505 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Dr. William P Paini Dds NPPES

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

DR. WILLIAM P PAINI DDS (NPI 1427015528) is an individual general practice provider in Denver, Colorado, licensed in Colorado (DEN 8320) and active in the NPI registry since May 2006. He has opted out of Medicare through May 18, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1427015528

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. WILLIAM P PAINICredential: DDS

Location Address1164 SPEER BLVDDenver, CO 80204-3527

Mailing Address1164 Speer BlvdDenver, CO 80204-3527 · (303) 246-0100 · Fax (720) 222-0505

Phone(303) 246-0100

Fax(720) 222-0505

Sole ProprietorNo

Enumeration DateMay 1, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1427015528 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 · DEN 8320

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.

1164 SPEER BLVD, Denver, CO 80204

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. William P Paini Dds has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from May 18, 2017 through May 18, 2027.

Opt-Out Effective DateMay 18, 2017

Opt-Out In Effect ThroughMay 18, 2027Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80204 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

$89.43 typical visit price

range $58.06 – $174.82

Typical copayment $22.35 (range $14.51 – $43.70)

Most-billed visit code 99203

Established Patient

$72.20 typical visit price

range $18.88 – $142.79

Typical copayment $18.05 (range $4.72 – $35.69)

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.

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 Paini's NPI number?

The NPI number for William Paini is 1427015528. It was assigned to this individual provider in the NPPES registry on May 1, 2006.

Where is William Paini located?

William Paini practices at 1164 Speer Blvd, Denver, CO 80204. The listed phone number is (303) 246-0100.

What is William Paini's specialty?

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

Is William Paini enrolled in Medicare?

No. William Paini has opted out of Medicare through May 18, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for William Paini was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 days 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.