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

Dr. John Francis Michael Hennecken, MD

Individual provider Cardiovascular Disease Physician · NPI 1104856780

Dr. John Francis Michael Hennecken, MD is a Cardiovascular Disease (Cardiology) in Brooklyn, New York. Graduated from State University of New York Downstate Medical Center in 1981, 45 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 2,791-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Georgia and New York.

Years since qualifying
45
Trained at
State University of New York Downstate Medical Center
Licensed in
GA, NY
In the registry since
2006
Specialties on file
3
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

300 Cadman Plz W Fl 18
Brooklyn, NY 11201-3226
Phone: (929) 210-6135
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 101 Lake Oconee Pkwy, Eatonton, GA 31024-6054 — (404) 605-2800
  • 1000 Cowles Clinc Way # 200, Greensboro, GA 30642-5285 — (706) 484-7606

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 15076501 (NY)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 35901 (GA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 035901 (GA)

Record details

NPI number1104856780
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 3, 2006
Last updated in NPPESMay 18, 2020
Certification dateMay 18, 2020

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1981 (45 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 2791 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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