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

Individual provider Internal Medicine Physician · NPI 1194700666

David Augustus Fiellin, MD is an Internal Medicine in New Haven, Connecticut. Graduated from Emory University School of Medicine in 1991, 35 years ago. Practices with Yale University, a 2,618-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
35
Trained at
Emory University School of Medicine
Licensed in
CT
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

789 Howard Ave Ynhh
New Haven, CT 06519-1304
Phone: (203) 688-2471
Fax: (203) 688-4516
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 033601 (CT)

Record details

NPI number1194700666
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 7, 2005
Last updated in NPPESFebruary 6, 2013

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolEMORY UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Yale University — 2618 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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