Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. John Charles Dieck, DO

Individual provider Anesthesiology Physician · NPI 1205899226

Dr. John Charles Dieck, DO is an Anesthesiology in Waterbury, Connecticut. Qualified in 1991, 35 years ago. Practices with Nuvance Health Medical Practice CT Inc, a 741-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
35
Licensed in
CT
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

140 Grandview Ave
Waterbury, CT 06708-2505
Phone: (203) 757-7000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 000505 (CT)

Record details

NPI number1205899226
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 10, 2006
Last updated in NPPESJuly 8, 2007
Mailing address322 Beach St, Litchfield, CT 06759-2313

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Nuvance Health Medical Practice Ct Inc — 741 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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