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

Dr. Frederick David Haeseler, MD

Individual provider Internal Medicine Physician · NPI 1295862084

Dr. Frederick David Haeseler, MD is an Internal Medicine Physician in New Haven, Connecticut. Practices as a sole proprietor. Licensed in Connecticut.

Licensed in
CT
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

367 Cedar St Esh 309
New Haven, CT 06510-3222
Phone: (203) 785-7082
Fax: (203) 737-4199
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 017832 (CT)

Record details

NPI number1295862084
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 27, 2007
Last updated in NPPESJuly 8, 2007

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