DR. JOHN T. ZIEWACZ (M.D.) – Diagnostic Radiology Physician, NPI 1518953389

DR. JOHN T. ZIEWACZ (M.D.) is a healthcare provider. based in Hartford, Connecticut. specializing in Diagnostic Radiology Physician. They hold the professional credentials M.D.. They hold a License No. 028863 (CT). The NPI Number for DR. JOHN T. ZIEWACZ (M.D.) is 1518953389

Main info

Male
44 Years Of Experience
Accepts Medicare Assignment
Name
DR. JOHN T. ZIEWACZ (M.D.)
NPI
1518953389
Phone
(860) 525-3322
Address
1000 ASYLUM AVE
Enumeration Date
27 September 2005
Last Update Date
13 July 2007

Doctor Profile

Medical School Name
UNIVERSITY OF CONNECTICUT SCHOOL OF MEDICINE
Secondary Phone
8609696400
Graduation Year
1982 (44 years ago)
PAC ID
4789765959
Group Practice PAC ID
6002703246
Professional Enrollment ID
I20100914000809
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

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Provider Addresses for DR. JOHN T. ZIEWACZ (M.D.)

  • 1000, Asylum Avenue, Asylum Avenue District Historic District, Hartford, Hartford County, Connecticut, 06105, United States

    SUITE 3201E

    HARTFORD, CT 061051770

    Phone: (860) 525-3322

    Type: Mailing

  • Saint Francis Hospital and Medical Center, 114, Woodland Street, Upper Albany Historic District, Hartford, Hartford County, Connecticut, 06105, United States

    RADIOLOGY DEPARTMENT

    HARTFORD, CT 061051208

    Phone: (860) 714-4830

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 06105)

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Provider's Procedures

DR. JOHN T. ZIEWACZ (M.D.) performs procedures in Diagnostic Radiology Physician. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
DIAGNOSTIC RADIOLOGYCT71010X-ray of chest, 1 view, front360309
DIAGNOSTIC RADIOLOGYCT71250CT scan chest169161
DIAGNOSTIC RADIOLOGYCT74177CT scan of abdomen and pelvis with contrast340308

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6002703246View full group profile
NameSpecialtyState
Diagnostic RadiologyMA
Diagnostic RadiologyCT
Diagnostic RadiologyMN
Diagnostic RadiologyCT
Physician AssistantCT
Diagnostic Radiology, Interventional RadiologyCT
Diagnostic RadiologyCT
-CT
Diagnostic RadiologyCT
Diagnostic Radiology, Interventional RadiologyCT

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Frequently asked questions

How do payers reference DR. JOHN T. ZIEWACZ (M.D.)?
For DR. JOHN T. ZIEWACZ (M.D.), use NPI 1518953389 as the unique 10-digit identifier.
Active or inactive — what applies to DR. JOHN T. ZIEWACZ (M.D.)?
You should see DR. JOHN T. ZIEWACZ (M.D.) as active in CMS-hosted NPPES data.
How would a patient describe DR. JOHN T. ZIEWACZ (M.D.)'s focus?
For DR. JOHN T. ZIEWACZ (M.D.), the primary taxonomy reads as Diagnostic Radiology Physician. Clinical services aligned with this taxonomy classification.
Where in Connecticut is DR. JOHN T. ZIEWACZ (M.D.) registered?
Use Hartford, Connecticut as the headline location for DR. JOHN T. ZIEWACZ (M.D.) here.
What does 2 location(s) imply?
2 practice locations appear in the available data.

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