Physician Profile
Subramanian Krishnan, MD
Unclaimed ProfileAbout Dr. Krishnan
Based in Middletown, CT, Subramanian Krishnan, MD is listed in the NPI registry under cardiovascular disease. According to Medicare claims data, Subramanian cared for 1,915 Medicare patients across 2,437 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, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report, and routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (860) 347-4258
- Email not available
Practice Locations
420 SAYBROOK RD
Middletown, CT 06457
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
- AFib
- Congestive heart failure
- Heart attack
- Heart disease
- High blood pressure
- High cholesterol
Coronary and ischemic heart disease
- Coronary artery disease
- Stable angina
Heart failure and cardiomyopathy
- Hypertrophic cardiomyopathy
- Myocarditis
- Pericardial effusion
Heart rhythm
- Slow heart rate (bradycardia)
- Supraventricular tachycardia
Symptoms and functional disorders
- Fainting and syncope
- Heart palpitations
- Postural orthostatic tachycardia syndrome
Valve and structural heart
- Aortic stenosis
- Mitral regurgitation
- Mitral valve prolapse
- Patent foramen ovale
Vascular and risk factors
- Aortic aneurysm
- Carotid artery disease
- Familial hypercholesterolemia
- Resistant hypertension
Artery & vascular
- Peripheral Artery Disease (PAD)
Heart inflammation
- Pericarditis (Heart Sac Inflammation)
Heart muscle
- Poor Circulation and Swollen Legs
Heart valves
- Heart Murmur
Vascular disease
- High Blood Pressure in the Lungs (Pulmonary Hypertension)
Procedures & services
Most searched procedures
- Echocardiogram
- EKG
- Heart monitor
- Heart stent
- Pacemaker surgery
- Stress test
Office and noninvasive testing
- Ambulatory blood-pressure monitoring
Advanced imaging
- Cardiac magnetic resonance imaging
- Nuclear cardiac stress imaging
Consultations
- Preventive Cardiology Consultation
Diagnostic testing
- Cardiopulmonary Exercise Testing (CPET)
- Tilt Table Test
Diagnostics
- Electrophysiology Study (EP Study)
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
- Heart CT Scan (Cardiac CT)
Heart procedures
- Heart Fluid Drainage (Pericardiocentesis)
Heart rhythm procedures
- Radiofrequency ablation
Imaging
- Heart Calcium Scan
- Transesophageal Echocardiogram for Kids
Implants
- Defibrillator Implant (ICD)
Recovery & rehabilitation
- Cardiac Rehabilitation Program
Vascular imaging
- Carotid Ultrasound
- Leg Circulation Test (ABI and Arterial Doppler)
Procedures Most Often Billed to Medicare
2,437 services · 1,915 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
66 | As often as other peers in Cardiovascular Disease |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
477 | More often than most peers in Cardiovascular Disease |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
476 | As often as other peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
151 | As often as other peers in Cardiovascular Disease |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | Treatment | 93015 |
56 | As often as other peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
52 | As often as other peers in Cardiovascular Disease |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
37 | As often as other peers in Cardiovascular Disease |
| Electrocardiogram (ecg) 2-day continuous with review by health care professional | Treatment | 93227 |
25 | As often as other peers in Cardiovascular Disease |
| Electrocardiogram (ecg) 2-day continuous | Treatment | 93225 |
25 | As often as other peers in Cardiovascular Disease |
| Programming of dual lead pacemaker system | Treatment | 93280 |
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.
Other cardiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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.
More connections — 27 related providers in 4 groups
Other cardiologists in Middletown 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Nuclear medicine studies of heart muscle at rest and with stress and spect 8
Providers in CT who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Krishnan?
Dr. Krishnan is a cardiologist in Middletown, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Cardiovascular Disease”.
NPI registry
What is Dr. Krishnan's address?
Dr. Krishnan is listed at 420 Saybrook Rd, Middletown, CT 06457. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Krishnan?
The number on file is (860) 347-4258. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Krishnan's NPI number?
Dr. Krishnan's National Provider Identifier is 1528267358. 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. Krishnan train?
Dr. Krishnan attended Other, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Krishnan been practicing?
Dr. Krishnan has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Krishnan perform?
According to Medicare billing data, Dr. Krishnan performs imaging including nuclear medicine studies of heart muscle at rest and with stress and spect; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and routine electrocardiogram using at least 12 leads with interpretation and report only, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Krishnan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Krishnan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.