Cardiology · Portsmouth, NH
Expert heart care, close to home
Dr. Marcus Reyes provides consultative cardiology, diagnostic testing and long-term heart health management for adults on the Seacoast. Most new patients are seen within two weeks.
What we treat
Comprehensive evaluation and ongoing care, with in-office testing so you are not sent across town.
Hypertension
Evidence-based blood pressure management with home monitoring support.
Cholesterol & prevention
Risk assessment, lipid management and lifestyle planning to prevent heart disease.
Arrhythmia & palpitations
In-office EKG, Holter and event monitoring to find the cause of an irregular heartbeat.
Heart failure
Guideline-directed therapy and close follow-up to keep you out of the hospital.
Echocardiography
On-site cardiac ultrasound read by Dr. Reyes, usually with results the same day.
Stress testing
Exercise and pharmacologic stress tests for chest pain and shortness of breath.
About Dr. Reyes
Dr. Marcus Reyes is board-certified in cardiovascular disease and internal medicine. He trained at Dartmouth-Hitchcock and spent eight years in hospital practice before opening Harbor Cardiology in 2019.
The practice is intentionally small: one physician, one nurse practitioner, and a team that knows you by name. Appointments are forty minutes, not fifteen.
- 20+
- years in cardiology
- < 2 weeks
- to a new-patient visit
- 40 min
- standard appointment
Request a consultation
Share your contact details and the best time to call. For referrals, your provider can fax records to (603) 555-0189.
Call us
(603) 555-0188Hours
- Mon – Fri
- 8:00 AM – 4:30 PM
- Sat – Sun
- Closed
Chest pain or shortness of breath right now?
Do not use this website. Call 911 or go to the nearest emergency department.