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WILLIAM SIEMIASZKO DDS
NPI 1720295009
Dentist in Seekonk, MA

Active since May 17, 2007PECOS Enrolled
20 COMMERCE WAY, SEEKONK, MA 02771(508) 336-6700(508) 336-6742 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William Siemiaszko Dds NPPES

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

WILLIAM SIEMIASZKO DDS (NPI 1720295009) is an individual dentist in Seekonk, Massachusetts, licensed in Massachusetts (21050) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720295009
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameWILLIAM SIEMIASZKOCredential: DDS
Location Address20 COMMERCE WAYSeekonk, MA 02771-5823
Mailing AddressPo Box 3189Syracuse, NY 13220-3189 · (315) 454-6000 · Fax (315) 454-8650
Phone(508) 336-6700
Fax(508) 336-6742
Sole ProprietorNo
Enumeration DateMay 17, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1720295009 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
Licenses✔ Licensed in MA · 21050✔ Licensed in CT · 004430✔ Licensed in RI · DEN02924✔ Licensed in NY · 052591-1✔ Licensed in OH · 30-022317✔ Licensed in PA · DS036764
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.
20 COMMERCE WAY, Seekonk, MA 02771
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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, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Siemiaszko 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02771 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 10

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

PEARLE VISION CENTER
Eyewear Supplier
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-7040
ASPEN DENTAL ASSOCIATES OF NEW ENGLAND PC
Dentist (General Practice)
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-6700
OLEXANDER LYASKIVNTSKY DMD
Dentist
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-6700
CHIRAG ARVINDBHAI PATEL DDS
Dentist (General Practice)
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-6700
MRS. KERRI LEE MEDEIROS FNP-BC
Nurse Practitioner
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 372-2300
PRAVEEN R BANDA DMD
Dentist (General Practice)
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-6700
SUNNY SMILE V INC
Dentist (General Practice)
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-6700
ARUL PC OF FALL RIVER
Dentist (General Practice)
20 COMMERCE WAY
SEEKONK, MA 02771
Bristol County (508) 336-6700

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 Siemiaszko's NPI number?

The NPI number for William Siemiaszko is 1720295009. It was assigned to this individual provider in the NPPES registry on May 17, 2007.

Where is William Siemiaszko located?

William Siemiaszko practices at 20 Commerce Way, Seekonk, MA 02771. The listed phone number is (508) 336-6700.

What is William Siemiaszko's specialty?

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

Is William Siemiaszko enrolled in Medicare?

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

What insurance does William Siemiaszko 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, HRI Dental & Vision and Humana and 2 other insurers list William Siemiaszko 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 Siemiaszko 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.