Tomasz Michalski, MD
NPI 1639393044 · Family Medicine Physician · Sturgeon Bay, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tomasz Michalski, MD is a Family Medicine Physician provider in Sturgeon Bay, WI (NPI 1639393044).
Provider details
- NPI number
- 1639393044
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 51311 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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 · 140 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 906 | 229 |
| Levothyroxine Sodium | 583 | 131 |
| Metoprolol Succinate | 426 | 112 |
| Omeprazole | 423 | 101 |
| Rosuvastatin Calcium | 398 | 121 |
| Lisinopril | 358 | 96 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-13
- Last updated
- 2026-03-10
- Certified
- 2026-03-10
Frequently asked questions
- What is Tomasz Michalski's NPI number?
- Tomasz Michalski's National Provider Identifier (NPI) is 1639393044, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tomasz Michalski's specialty?
- Tomasz Michalski is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tomasz Michalski located?
- Tomasz Michalski's practice location on file with NPPES is 323 S 18th Ave, Sturgeon Bay, WI 54235-1401.
- What is Tomasz Michalski's phone number?
- The practice phone number listed in the NPPES registry for Tomasz Michalski is (920) 746-0510.
- Does Tomasz Michalski accept Medicare?
- Tomasz Michalski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tomasz Michalski's NPI active?
- Yes — Tomasz Michalski's NPI (1639393044) is active in the NPPES registry as of the last update on 2026-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.