Maciej Sielski, DDS
NPI 1598044554 · General Practice Dentistry · Fontana, CA
Maciej Sielski, DDS is a General Practice Dentistry provider in Fontana, CA (NPI 1598044554).
Provider details
- NPI number
- 1598044554
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
- License
- 019028784 (IL)
Specialties & taxonomies
Dental Providers
Dental Providers
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 430 W Erie St Ste 200Chicago, IL 60654-6920Phone: (920) 838-1649
Registry dates
- Enumerated
- 2011-08-09
- Last updated
- 2019-01-16
Frequently asked questions
- What is Maciej Sielski's NPI number?
- Maciej Sielski's National Provider Identifier (NPI) is 1598044554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maciej Sielski's specialty?
- Maciej Sielski is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Maciej Sielski located?
- Maciej Sielski's practice location on file with NPPES is 16944 S. Highland Ave, Fontana, CA 92336.
- What is Maciej Sielski's phone number?
- The practice phone number listed in the NPPES registry for Maciej Sielski is (909) 275-7179.
- Is Maciej Sielski's NPI active?
- Yes — Maciej Sielski's NPI (1598044554) is active in the NPPES registry as of the last update on 2019-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.