John Sowinski, R.PH.
NPI 1861539553 · Nutrition Support Pharmacist · Two Rivers, WI
John Sowinski, R.PH. is a Nutrition Support Pharmacist provider in Two Rivers, WI (NPI 1861539553).
Provider details
- NPI number
- 1861539553
- Entity type
- Individual
- Primary specialty
- Nutrition Support PharmacistPharmacy Service Providers
- Credential
- R.PH.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 10318 (WI)
Specialties & taxonomies
Pharmacy Service Providers
Pharmacy Service 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-31
- Last updated
- 2025-09-11
Frequently asked questions
- What is John Sowinski's NPI number?
- John Sowinski's National Provider Identifier (NPI) is 1861539553, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sowinski's specialty?
- John Sowinski is listed in the NPPES registry with a primary specialty of Nutrition Support Pharmacist (Pharmacy Service Providers).
- Where is John Sowinski located?
- John Sowinski's practice location on file with NPPES is 1516 Washington St, Two Rivers, WI 54241-3045.
- What is John Sowinski's phone number?
- The practice phone number listed in the NPPES registry for John Sowinski is (920) 553-1225.
- Is John Sowinski's NPI active?
- Yes — John Sowinski's NPI (1861539553) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.