Dr. Joseph S Kostrzewski Sc
NPI 1386803757 · Primary Care Clinic/Center · Milwaukee, WI
Dr. Joseph S Kostrzewski Sc is a Primary Care Clinic/Center organization in Milwaukee, WI (NPI 1386803757).
Provider details
- NPI number
- 1386803757
- Entity type
- Organization
- Primary specialty
- Primary Care Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Joseph Kostrzewski, Physician(414) 617-1717
- License
- 17121 (WI)
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-06-02
- Last updated
- 2014-04-02
Frequently asked questions
- What is Dr. Joseph S Kostrzewski Sc's NPI number?
- Dr. Joseph S Kostrzewski Sc's National Provider Identifier (NPI) is 1386803757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Dr. Joseph S Kostrzewski Sc?
- Dr. Joseph S Kostrzewski Sc is classified in the NPPES registry as Primary Care Clinic/Center (Ambulatory Health Care Facilities).
- Where is Dr. Joseph S Kostrzewski Sc located?
- Dr. Joseph S Kostrzewski Sc's practice location on file with NPPES is 1717 W Greenfield Ave, Milwaukee, WI 53204-2658.
- What is Dr. Joseph S Kostrzewski Sc's phone number?
- The practice phone number listed in the NPPES registry for Dr. Joseph S Kostrzewski Sc is (414) 671-1717.
- Who is the authorized official for Dr. Joseph S Kostrzewski Sc?
- The authorized official listed on Dr. Joseph S Kostrzewski Sc's NPPES record is Joseph Kostrzewski, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Dr. Joseph S Kostrzewski Sc's NPI active?
- Yes — Dr. Joseph S Kostrzewski Sc's NPI (1386803757) is active in the NPPES registry as of the last update on 2014-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.