Michael J Mazzini, M.D.
Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Boston, MA
At a glance
732 Harrison Ave, Boston, MA 02118-2309
Published activity: Pacemaker insertion or repair. View counts and coverage
NPPES record updated Jan 24, 2020. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
732 Harrison Ave Preston, 3Rd FloorBoston, MA 02118-2309
Additional reported practice locations
19 Old Rollinsford Rd Bldg BDover, NH 038202807
Phone: 6035164265
Education & affiliations
- Medical / professional school
- University Of Colorado School Of Medicine, Denver
- Graduation year
- 2002
- CMS specialties
- Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine
Practice groups
Reported hospital affiliations
- Frisbie Memorial Hospital Rochester, NH
- Huggins Hospital Wolfeboro, NH
- Massachusetts General Hospital Boston, MA
- Portsmouth Regional Hospital Portsmouth, NH
- Wentworth-Douglass Hospital Dover, NH
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Pacemaker insertion or repair | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS)
- Taxonomy code
- 207RC0001X
- Enumeration date
- Jun 2, 2006
- Record updated
- Jan 24, 2020
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RC0000X
License reported: 223341 MA
207RC0001X
License reported: 20159 NH
207RC0001X · Primary
License reported: 223341 MA
207R00000X
License reported: 223341 MA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
732 Harrison AvePreston, 3Rd Floor
Boston, MA 02118-2309
- Phone
- (617) 638-7490
- Fax
- (617) 414-8742
Mailing address
3 WOODLAND RDSTE 421
STONEHAM, MA 021801714
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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