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Family Practice

Michael D. Mason, MD

Sees patients in Vallejo, CA · California

Summary

Michael D. Mason, MD (Family Practice) is enrolled with Medicare at 1 practice location in Vallejo, CA. NPI 1528116506. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(707) 651‑1000 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Michael D. Mason, 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

1Practice location
Family PracticePrimary specialty
YesAccepts Medicare assignment
32Years since medical school (graduated 1994)
University Of Southern California Keck School Of MedicineMedical school
MaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does Michael D. Mason see patients?
Medicare's clinician data lists 1 practice location in Vallejo, CA. Call before your visit to confirm the address.
What is Michael D. Mason's specialty?
Medicare lists Family Practice as the primary specialty, and also Geriatric Medicine and Hospice/Palliative Care.
Does Michael D. Mason accept Medicare assignment?
Yes. Medicare's clinician data says Michael D. Mason 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 D. Mason?
(707) 651-1000, as listed in official Medicare / NPI Registry data.
What is Michael D. Mason's NPI number?
1528116506. 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 D. Mason is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Michael D. Mason as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Family Practice doctors in California →

Other family doctors in Vallejo

Clinicians with the same Medicare primary specialty in Vallejo, CA — not a recommendation.

All family doctors in Vallejo →

Clinician information

CredentialMD
Medical schoolUniversity Of Southern California Keck School Of Medicine
Graduation year1994
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528116506
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