Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Michael G. Mazzotta, MD

Sees patients in Clackamas, OR · Portland, OR · Oregon

Summary

Michael G. Mazzotta, MD (Internal Medicine) is enrolled with Medicare at 6 practice locations in Clackamas, OR and Portland, OR. NPI 1841427572. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Michael G. Mazzotta, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
17Years since medical school (graduated 2009)
University Of Massachusetts Medical SchoolMedical school
MaleGender (as listed)
Kaiser Foundation Health Plan of the NorthwestGroup practice (+2 more)

Quick answers

Where does Michael G. Mazzotta see patients?
Medicare's clinician data lists 6 practice locations, including Clackamas, OR and Portland, OR. Call before your visit to confirm the address.
What is Michael G. Mazzotta's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Pediatric Medicine.
Does Michael G. Mazzotta accept Medicare assignment?
Yes. Medicare's clinician data says Michael G. Mazzotta accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Michael G. Mazzotta?
(800) 813-2000, as listed in official Medicare / NPI Registry data.
What is Michael G. Mazzotta's NPI number?
1841427572. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Michael G. Mazzotta is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Michael G. Mazzotta as a member of these groups (CMS data updated 2026-10-02).

  • Kaiser Foundation Health Plan of the Northwest1,807 clinicians in the group
  • The Oregon Clinic, PC362 clinicians in the group
  • Broadway Medical Clinic LLP18 clinicians in the group

Specialties

Find other Internal Medicine doctors in Oregon →

Other internal medicine doctors in Clackamas

Clinicians with the same Medicare primary specialty in Clackamas, OR — not a recommendation.

All internal medicine doctors in Clackamas →

Clinician information

CredentialMD
Medical schoolUniversity Of Massachusetts Medical School
Graduation year2009
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1841427572
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians