William Kowalski, DMD MS
NPI 1114090842 · Endodontics · Fenton, MO
William Kowalski, DMD MS is a Endodontics provider in Fenton, MO (NPI 1114090842).
Provider details
- NPI number
- 1114090842
- Entity type
- Individual
- Primary specialty
- EndodonticsDental Providers
- Credential
- DMD MS
- Sex
- Male
- Sole proprietor
- No
- License
- 2001025879 (MO)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 50 | 42 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 48 | 47 |
| Methylprednisolone | 41 | 35 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Kowalski's NPI number?
- William Kowalski's National Provider Identifier (NPI) is 1114090842, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Kowalski's specialty?
- William Kowalski is listed in the NPPES registry with a primary specialty of Endodontics (Dental Providers).
- Where is William Kowalski located?
- William Kowalski's practice location on file with NPPES is 1568 Smizer Station Road, Fenton, MO 63026.
- What is William Kowalski's phone number?
- The practice phone number listed in the NPPES registry for William Kowalski is (636) 225-2330.
- Is William Kowalski's NPI active?
- Yes — William Kowalski's NPI (1114090842) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.