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DR. WILLIAM JOHN BONTEMPI DMD, MD
NPI 1114958444
Dentist - Oral and Maxillofacial Surgery in Westfield, MA

Active since July 05, 2006Opted out of Medicare · through Jan 1, 2027
53 SOUTHAMPTON RD, SUITE 5, WESTFIELD, MA 01085(413) 562-1100(413) 562-3653 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William John Bontempi Dmd, Md NPPES

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

DR. WILLIAM JOHN BONTEMPI DMD, MD (NPI 1114958444) is an individual oral and maxillofacial surgery provider in Westfield, Massachusetts, licensed in Massachusetts (19611) and active in the NPI registry since July 2006. He has opted out of Medicare through January 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1114958444
Entity TypeIndividualMale
Primary Taxonomy1223S0112X
Provider Legal NameDR. WILLIAM JOHN BONTEMPICredential: DMD, MD
Location Address53 SOUTHAMPTON RD, SUITE 5Westfield, MA 01085-1582
Mailing Address53 Southampton Rd, Suite 5Westfield, MA 01085-1582 · (413) 562-1100 · Fax (413) 562-3653
Phone(413) 562-1100
Fax(413) 562-3653
Sole ProprietorNo
Enumeration DateJuly 5, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1114958444 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Oral and Maxillofacial SurgeryDental Providers
Taxonomy Code1223S0112X
License✔ Licensed in MA · 19611
Definition
An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.
53 SOUTHAMPTON RD, Westfield, MA 01085
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Other Identifiers 2

Medicare UPINH85984
Medicare ID-Type UnspecifiedBOX20103MA

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 John Bontempi Dmd, Md 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 January 1, 2017 through January 1, 2027.

Opt-Out Effective DateJanuary 1, 2017
Opt-Out In Effect ThroughJanuary 1, 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 01085 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$73.22 typical visit price
range $19.11 – $144.84
Typical copayment $18.30 (range $4.77 – $36.21)
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 4

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

DR. ELIZABETH SHIN PERRY DMD
Dentist (Endodontics)
53 SOUTHAMPTON RD, SUITE 6
WESTFIELD, MA 01085
Hampden County (413) 562-3900
DEPARTMENT OF MENTAL HEALTH
Case Management
53 SOUTHAMPTON RD
WESTFIELD, MA 01085
Hampden County (413) 564-2200
PERRY ENDODONTICS, P.C.
Clinic/Center (Dental)
53 SOUTHAMPTON RD, SUITE 6
WESTFIELD, MA 01085
Hampden County (413) 562-3900
DR. STEPHEN JOSEPH PAOLELLA DMD,MD
Dentist (Oral and Maxillofacial Surgery)
53 SOUTHAMPTON RD, SUITE 5
WESTFIELD, MA 01085
Hampden County (413) 562-1100

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 Bontempi's NPI number?

The NPI number for William Bontempi is 1114958444. It was assigned to this individual provider in the NPPES registry on July 5, 2006.

Where is William Bontempi located?

William Bontempi practices at 53 Southampton Rd Suite 5, Westfield, MA 01085. The listed phone number is (413) 562-1100.

What is William Bontempi's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

Is William Bontempi enrolled in Medicare?

No. William Bontempi has opted out of Medicare through January 1, 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 Bontempi was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.