Browse specialties
Chiropractors
Dentists
Dermatologists
Ear, Nose & Throat Doctors
Endocrinologists
Eye Doctors
OBGYNs
Ophthalmologists
Optometrists
Orthopedic Surgeons
Podiatrists
Primary Care Doctors
Psychiatrists
Psychologists
Therapist-Counselors
See all specialties A-Z
Zocdoc
HomeAbout usPressCareersHelp
Contact
service@zocdoc.com855-962-3621
Discover
The Paper Gown: Stories for and about patientsThe Script: Insights for doctorsCommunity StandardsData and privacyVerified reviewsTech BlogNew
Are you a top doctor or health service?
Try Zo, your AI Phone AssistantList your practice on ZocdocLearn about Zocdoc for Health SystemsBecome an EHR partner
Insurance Carriers
Top Specialties
Welcome to Zocdoc!
Book local doctors who take your insurance
Sign up
For providers
Grow your practice
For patients
Zocdoc
HomeAbout usPressCareersHelp
Contact
service@zocdoc.com855-962-3621
Discover
The Paper Gown: Stories for and about patientsThe Script: Insights for doctorsCommunity StandardsData and privacyVerified reviewsTech BlogNew
Are you a top doctor or health service?
Try Zo, your AI Phone AssistantList your practice on ZocdocLearn about Zocdoc for Health SystemsBecome an EHR partner
Insurance Carriers
Top Specialties
HelpList your practice on Zocdoc
Sign up
Dr. John Hennecken, MD

Dr. John Hennecken, MD

Cardiologist
300 Cadman Plaza W, Brooklyn, NY
If you need to cancel your appointment within 24 hours of the scheduled time, please call the office. John Hennecken, MD was born in Manhattan and earned his undergraduate degree from Saint John’s University. He received his medical degree with honors from S.U.N.Y. Downstate Medical Center in Brooklyn, N.Y. and was elected to the Alpha Omega Alpha honor medical society. He completed his internship and residency at The Albert Einstein College of Medicine in the Bronx, where he was also a Chief resident. Dr. Hennecken completed his cardiology and interventional cardiology fellowships at Yale University followed by a term of serving on active duty at Brooke Army Medical Center in San Antonio. Upon his release from active duty, he was appointed Assistant Professor of Medicine at the University of Texas in San Antonio/Audie Murphy VA. He subsequently accepted an appointment as an Associate Professor of Medicine and Director of the Cardiac Catheterization labs and Interventional Cardiology at the Medical College of Georgia. He has been in private practice since 1995 and has served as Director of the Cardiac Catheterization labs and Chairman of the Department of Cardiology at University Hospital in Augusta, Ga. Since 2008, he has focused on general and preventive cardiology as well as cardiac imaging. Dr. Hennecken has been married to Carol since 1981 and has four children, John, Christina, Kevin and Carolyn. He enjoys skiing, tennis, and sailing. He and Carol are happy to be back in New York where two of their children as well as other family and friends are living.
Patients often return
More patients return than other providers in the area
Highly recommended
97% of patients gave this doctor 5 stars

Book an appointment for free

The office partners with Zocdoc to schedule appointments

Scheduling details

  1. See if they are in network

Today, Apr 22 – Tue, May 5
At the moment, there's no availability on Zocdoc for the selected date range and appointment type at this location.
View more availability

What patients are saying

Overall rating

4.97

Average wait time

4.40

Bedside manner

5.00

About Dr. John Hennecken

If you need to cancel your appointment within 24 hours of the scheduled time, please call the office. John Hennecken, MD was born in Manhattan and earned his undergraduate degree from Saint John’s University. He received his medical degree with honors from S.U.N.Y. Downstate Medical Center in Brooklyn, N.Y. and was elected to the Alpha Omega Alpha honor medical society. He completed his internship and residency at The Albert Einstein College of Medicine in the Bronx, where he was also a Chief resident. Dr. Hennecken completed his cardiology and interventional cardiology fellowships at Yale University followed by a term of serving on active duty at Brooke Army Medical Center in San Antonio. Upon his release from active duty, he was appointed Assistant Professor of Medicine at the University of Texas in San Antonio/Audie Murphy VA. He subsequently accepted an appointment as an Associate Professor of Medicine and Director of the Cardiac Catheterization labs and Interventional Cardiology at the Medical College of Georgia. He has been in private practice since 1995 and has served as Director of the Cardiac Catheterization labs and Chairman of the Department of Cardiology at University Hospital in Augusta, Ga. Since 2008, he has focused on general and preventive cardiology as well as cardiac imaging. Dr. Hennecken has been married to Carol since 1981 and has four children, John, Christina, Kevin and Carolyn. He enjoys skiing, tennis, and sailing. He and Carol are happy to be back in New York where two of their children as well as other family and friends are living.

Is this doctor in your insurance network?

Enter your insurance carrier and plan

  1. choose insurance

In-network insurances

99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
200+ more in-network plans

Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Cardiomyopathy
Atrial fibrillation and atrial flutter
Chronic high blood pressure
High cholesterol
Heart valve disorders
Coronary Artery Disease
Cardiomyopathy
Atrial fibrillation and atrial flutter
Chronic high blood pressure
High cholesterol

Office location

Mount Sinai Brooklyn Heights
300 Cadman Plaza W, Brooklyn, NY 11201
Get directions

Education and background

Practice names

Hospital affiliations

  • The Mount Sinai Hospital

Board certifications

  • American Board of Internal Medicine
  • Cardiovascular Disease (Internal Medicine)
  • Certification Board of Cardiovascular Computed Tomography

Education and training

  • Medical School - State University of New York, Downstate Medical Center, Doctor of Medicine
  • Albert Einstein College of Medicine of Yeshiva University, Internship in Internal Medicine
  • Yale University, Fellowship in Cardiology
  • Albert Einstein College of Medicine of Yeshiva University (Residency)
  • Yale University, Fellowship in Interventional Cardiology

Languages spoken

  • English

Provider's gender

Male

NPI number

1104856780

Patient reviews

All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.97
Wait time
4.40
Bedside manner
5.00
Trust Banner Shield
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
38 reviews
Most relevant
Verified patient
Verified patient
Verified patient
Frequently asked questions

How soon can I make an appointment with Dr. John Hennecken?

Generally, Dr. John Hennecken has appointments available on Zocdoc within 1 week. You can see Dr. Hennecken's earliest availability on Zocdoc and make an appointment online.

Is Dr. John Hennecken accepting new patients?

Dr. John Hennecken generally accepts new patients on Zocdoc. You can see Dr. Hennecken's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. John Hennecken accept my insurance?

Choose your insurance plan to verify if Dr. Hennecken is in-network.

Can I make an appointment with Dr. John Hennecken online?

Yes, you can make an appointment online with Dr. Hennecken using Zocdoc. It’s simple, secure, and free.

Which hospital is Dr. John Hennecken affiliated with?

Dr. John Hennecken is affiliated with The Mount Sinai Hospital.

What practice does Dr. John Hennecken work with?

Where is Dr. John Hennecken's office located?

Dr. John Hennecken's office is located at 300 Cadman Plaza W, Brooklyn, NY 11201.

Which board certifications does Dr. John Hennecken have?

Dr. John Hennecken is certified by American Board of Internal Medicine, Cardiovascular Disease (Internal Medicine), and Certification Board of Cardiovascular Computed Tomography.

What are common reasons for patients to see Dr. John Hennecken?

Dr. John Hennecken frequently sees patients for Cardiology Consultation , High Blood Pressure / Hypertension, New Patient Visit, Obesity / Weight Loss Consultation, and Varicose Vein(s). You can see other visit reasons for Dr. John Hennecken on their profile.

What languages does Dr. John Hennecken speak?

Dr. John Hennecken speaks English.

How do patients rate Dr. John Hennecken in reviews?

38 patients have reviewed Dr. John Hennecken. The overall rating for this doctor is 4.97/5. They have a 5/5 rating for bedside manner and a 4.4/5 rating for wait time. You can read individual reviews and ratings on their profile.

Find doctors

Zocdoc›Brooklyn Heights, New York, NY Cardiologists›Dr. John Hennecken, MD