Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Nicholas Dainiak, MD

Individual provider Internal Medicine Physician · NPI 1396713467

Nicholas Dainiak, MD is a Hematology in Bridgeport, Connecticut. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1973, 53 years ago. Practices with Hartford Hospital, a 1,040-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
53
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
CT
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

226 Mill Hill Ave 3rd Fl
Bridgeport, CT 06610-2811
Phone: (203) 384-3873
Fax: (203) 384-3829
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 017830 (CT)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 017830 (CT)

Record details

NPI number1396713467
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 14, 2006
Last updated in NPPESJuly 13, 2026
Mailing addressPo Box 5246, Bridgeport, CT 06610-0246

Medicare enrollment

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

Medicare specialtyHEMATOLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1973 (53 years in practice)
Group practice Hartford Hospital — 1040 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Bridgeport