Physician Profile
John Francis M. Hennecken, MD
Unclaimed ProfileAbout Dr. Hennecken
John Francis M. Hennecken, MD is a healthcare provider in Brooklyn, NY specializing in cardiovascular disease (cardiology). John Francis trained at State University of New York Downstate Medical Center, graduating in 1981. John Francis is also listed as specializing in cardiovascular disease. According to Medicare claims data, John Francis cared for 630 Medicare patients across 868 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient', and routine electrocardiogram (ecg) using at least 12 leads with interpretation and report. This provider record is associated with NPI 1104856780.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (929) 210-6135
- Email not available
Practice Locations
300 CADMAN PLZ W FL 18
Brooklyn, NY 11201
101 Lake Oconee Pkwy
Eatonton, GA 31024
1000 Cowles Clinc Way # 200
Greensboro, GA 30642
Conditions Commonly Evaluated or Treated
Within Cardiovascular Disease generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Coronary and ischemic heart disease
Heart failure and cardiomyopathy
Heart rhythm
Symptoms and functional disorders
Valve and structural heart
Vascular and risk factors
Artery & vascular
Heart inflammation
Heart muscle
Heart valves
Vascular disease
Procedures & services
Most searched procedures
Office and noninvasive testing
Advanced imaging
Consultations
Diagnostic testing
Diagnostics
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
Heart procedures
Heart rhythm procedures
Imaging
Implants
Recovery & rehabilitation
Vascular imaging
Procedures Most Often Billed to Medicare
868 services · 630 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
51 | As often as other peers in Cardiovascular Disease… |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
169 | As often as other peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
69 | Less often than most peers in Cardiovascular Disease… |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | Treatment | 93015 |
23 | Less often than most peers in Cardiovascular Disease… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
294 | As often as other peers in Cardiovascular Disease… |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
219 | As often as other peers in Cardiovascular Disease… |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
28 | Less often than most peers in Cardiovascular Disease… |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
15 | Less often than most peers in Cardiovascular Disease… |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other cardiovascular diseases in Brooklyn 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at State University of New York Downstate Medical Center 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at State University of New York Downstate Medical Center 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in NY who bill this service to Medicare most often.
Common questions
What does Dr. Hennecken specialize in?
Dr. Hennecken is a cardiovascular disease (cardiology) in Brooklyn, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Hennecken located?
Dr. Hennecken is listed at 300 Cadman Plz W Fl 18, Brooklyn, NY 11201. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Hennecken's phone number?
The number on file is (929) 210-6135. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Hennecken's NPI number?
Dr. Hennecken's National Provider Identifier is 1104856780. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Hennecken go to medical school?
Dr. Hennecken attended State University of New York Downstate Medical Center, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hennecken been practicing?
Dr. Hennecken has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Hennecken do most often?
According to Medicare billing data, Dr. Hennecken performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hennecken confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hennecken. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.