1. Home
  2. Directory
  3. California
  4. Fontana
  5. Dentist
  6. NPI Profile

DR. MACIEJ SIELSKI DDS
NPI 1598044554
Dentist - General Practice in Fontana, CA

Active since August 09, 2011
16944 S. HIGHLAND AVE, STE 400, FONTANA, CA 92336(909) 275-7179 Get Directions Write a Review

NPPES record last updated: January 16, 2019. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 16, 2019, Jan 26, 2017 (2 updates tracked since 2017).

About Dr. Maciej Sielski Dds NPPES

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

DR. MACIEJ SIELSKI DDS (NPI 1598044554) is an individual general practice provider in Fontana, California, licensed in California (101416) and active in the NPI registry since August 2011. He maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1598044554
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. MACIEJ SIELSKICredential: DDS
Location Address16944 S. HIGHLAND AVE, STE 400Fontana, CA 92336
Mailing Address8817 White Ibis DrAustin, TX 78729 · (847) 736-2567
Phone(909) 275-7179
Sole ProprietorYes
Enumeration DateAugust 9, 2011
Last NPPES UpdateJanuary 16, 20192 updates tracked since enumeration
✔ NPI 1598044554 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in CA · 101416
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.
Also ListedDentistTaxonomy 122300000X · License 019028784 (IL), 30566 (TX)
16944 S. HIGHLAND AVE, Fontana, CA 92336
Open in Google Maps ↗

Other Names 1

Other Name (5)Dr. Michael Sielski Dds

Secondary Practice Location 1

Location 1430 W Erie St Ste 200Chicago, IL 60654-6920 · Phone (920) 838-1649

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

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 Maciej Sielski's NPI number?

The NPI number for Maciej Sielski is 1598044554. It was assigned to this individual provider in the NPPES registry on August 9, 2011. The provider is also known as Dr. Michael Sielski Dds.

Where is Maciej Sielski located?

Maciej Sielski practices at 16944 S. Highland Ave Ste 400, Fontana, CA 92336. The listed phone number is (909) 275-7179.

What is Maciej Sielski's specialty?

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

What insurance does Maciej Sielski accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 15 other insurers list Maciej Sielski 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 Maciej Sielski was last updated on January 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.