John Ziewacz, M.D.
NPI 1518953389 · Diagnostic Radiology Physician · Hartford, CT
John Ziewacz, M.D. is a Diagnostic Radiology Physician provider in Hartford, CT (NPI 1518953389).
Provider details
- NPI number
- 1518953389
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 028863 (CT)
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
20 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
- 2005-09-27
- Last updated
- 2007-07-13
Frequently asked questions
- What is John Ziewacz's NPI number?
- John Ziewacz's National Provider Identifier (NPI) is 1518953389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ziewacz's specialty?
- John Ziewacz is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Ziewacz located?
- John Ziewacz's practice location on file with NPPES is 114 Woodland St, Hartford, CT 06105-1208.
- What is John Ziewacz's phone number?
- The practice phone number listed in the NPPES registry for John Ziewacz is (860) 714-4830.
- Is John Ziewacz's NPI active?
- Yes — John Ziewacz's NPI (1518953389) is active in the NPPES registry as of the last update on 2007-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.