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Allergy/Immunology

Michael A. Lenoir, MD

Sees patients in Concord, CA · Oakland, CA · California

Summary

Michael A. Lenoir, MD (Allergy/Immunology) is enrolled with Medicare at 2 practice locations in Concord, CA and Oakland, CA. NPI 1023065760. 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 A. Lenoir, 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

Allergy/ImmunologyPrimary specialty
YesAccepts Medicare assignment
59Years since medical school (graduated 1967)
University Of Texas Medical Branch At GalvestonMedical school
MaleGender (as listed)
Jiva Health IncGroup practice

Quick answers

Where does Michael A. Lenoir see patients?
Medicare's clinician data lists 2 practice locations, including Concord, CA and Oakland, CA. Call before your visit to confirm the address.
What is Michael A. Lenoir's specialty?
Medicare lists Allergy/Immunology as the primary specialty, and also Pediatric Medicine.
Does Michael A. Lenoir accept Medicare assignment?
Yes. Medicare's clinician data says Michael A. Lenoir 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 A. Lenoir?
(925) 685-4228, as listed in official Medicare / NPI Registry data.
What is Michael A. Lenoir's NPI number?
1023065760. 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 A. Lenoir is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

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

  • Jiva Health Inc51 clinicians in the group

Specialties

Find other Allergy/Immunology doctors in California →

Other allergist and immunologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All allergist and immunologists in California →

Clinician information

CredentialMD
Medical schoolUniversity Of Texas Medical Branch At Galveston
Graduation year1967
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1023065760
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