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About

Mass General Brigham (MGB) is a nonprofit, integrated health system based in Greater Boston, affiliated with Harvard Medical School. It operates major medical centers including Massachusetts General Hospital and Brigham and Women’s Hospital, along with specialty and community hospitals, home care, urgent care, and a health plan. MGB has about 82,000 employees and roughly $20B in operating revenue (as of 2024). It focuses on broad healthcare services across Massachusetts and southern New Hampshire and has faced regulatory scrutiny over costs and system-wide initiatives. If you’re specifically seeking cardiology services in Hyannis, note that MGB’s network primarily centers in the Boston area, with affiliated entities under the MGB umbrella; for Hyannis-specific cardiology, you may want to check local Barnstable County providers or ask MGB-affiliated hospitals about affiliated cardiology clinics or partners in the Hyannis area.

Clinic Type

Cardiology

Address

140 Yarmouth Road, Hyannis, MA 02601

Phone

857-282-2355

Email

patientbilling@partners.org

Opening Hours

8:00 a.m.–5:00 p.m.

Emergency Care

Emergency care available at the clinic

Services Offered

  • Cardiology

Technology & Equipment

  • Echocardiography
  • Cardiac stress testing
  • Nuclear cardiac imaging
  • EKG (Electrocardiography)

Team

  • John A Kalin, MD — Cardiologist
  • Micheal A Mecley, MD — Cardiologist
  • Nanette Hallet, Nurse Practitioner — Nurse Practitioner

Insurance & Payment

Languages Spoken

FAQs

What services does Mass General Brigham (Hyannis, Cardiology) offer?

Outpatient general cardiology services, echocardiography, cardiac stress testing and nuclear cardiac imaging.

Do providers at this practice support Martha’s Vineyard and Nantucket Cottage Hospital?

Yes, providers support both Martha’s Vineyard and Nantucket Cottage Hospital to bring cardiac care closer to home and provide a bridge to Mass General Brigham academic medical centers where advanced care is needed.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Healthgrades (Dr. John Kalin): 3.7/5 (26 reviews)
  • Healthgrades (Dr. Mallory Hatfield): 3.9/5 (23 reviews)
  • Healthgrades (Dr. Michael Levangie): 4.4/5 (17 reviews)

Patients praise

  • Providers noted as knowledgeable, competent, and personable
  • Thorough clinical care and follow-up on medication by some physicians
  • Professional front desk staff at certain practices
  • Inclusive and detailed cardiology practices

Common complaints

  • Long wait times for appointments and in the waiting room
  • Difficulties with office staff and communication/follow-up
  • Lack of modern patient portals or technology in some practices
  • Issues with appointment scheduling and reschedules

"After four years being treated by Dr. Hatfield, I’m there for life! Dr. Hatfield is the most thorough cardiologist I’ve been to... You won’t find a better more inclusive, detailed cardio practice!!"

Healthgrades (Dr. Mallory Hatfield)

"I have been with Dr. Levangie for over 20 years. He is a very competent and personable doctor. However, over the years the wait times to get in to see him are way too long and unacceptable for me."

Healthgrades (Dr. Michael Levangie)

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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