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Edit this profileAt a glance
- 30 Brennan St, Watsonville, CA 95076
About Dr. Byrne
Mark G. Byrne, M.D. is a healthcare provider in Watsonville, CA specializing in cardiovascular disease (cardiology). Mark trained at Illinois Medical College, graduating in 1989. Mark is also listed as specializing in interventional cardiology. According to Medicare claims data, Mark cared for 4,334 Medicare patients across 10,419 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, established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more, and insertion of needle into vein for collection of blood sample. This provider record is associated with NPI 1962411272.
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
- (831) 768-0220
- Email not available
Practice Locations
30 BRENNAN ST
Watsonville, CA 95076
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
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
10,419 services · 4,334 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
1,050 | More than most peers in Cardiovascular Disease… |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
113 | More often than most peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
350 | More often than most peers in Cardiovascular Disease… |
| Ultrasound of both sides of head and neck blood flow | Treatment | 93880 |
210 | More often than most peers in Cardiovascular Disease… |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
180 | More often than most peers in Cardiovascular Disease… |
| Ultrasound study of arm or leg veins with compression and maneuvers | Treatment | 93970 |
132 | More often than most peers in Cardiovascular Disease… |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) | Treatment | 93017 |
117 | More often than most peers in Cardiovascular Disease… |
| Ultrasound of leg arteries or artery grafts | Treatment | 93925 |
109 | More often than most peers in Cardiovascular Disease… |
| Injection, regadenoson, 0.1 mg | Drug given | J2785 |
352 | More often than most peers in Cardiovascular Disease… |
| Technetium tc-99m tetrofosmin, diagnostic, per study dose | A9502 |
246 | More 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.
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.
Trained at Illinois Medical College 4
Other providers in the same specialty who trained at the same institution.
Class of 1989 at Illinois Medical College 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Mark G. Byrne?
Mark G. Byrne is a cardiovascular disease (cardiology) in Watsonville, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mark G. Byrne's address?
Mark G. Byrne is listed at 30 Brennan St, Watsonville, CA 95076. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark G. Byrne?
The number on file is (831) 768-0220. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark G. Byrne's NPI number?
Mark G. Byrne's National Provider Identifier is 1962411272. 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 Mark G. Byrne train?
Mark G. Byrne attended Illinois Medical College, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark G. Byrne been practicing?
Mark G. Byrne has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mark G. Byrne perform?
According to Medicare billing data, Mark G. Byrne performs procedures including insertion of needle into vein for collection of blood sample; reads or performs imaging such as nuclear medicine studies of heart muscle at rest and with stress and spect; provides treatments such as ultrasound of heart with color-depicted blood flow, rate, direction and valve function and ultrasound of both sides of head and neck blood flow, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark G. Byrne confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark G. Byrne. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.