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Internal Medicine

Maximo Diamond, MD

Sees patients in Upland, CA · California

Summary

Maximo Diamond, MD (Internal Medicine) is enrolled with Medicare at 1 practice location in Upland, CA. NPI 1063519932. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(888) 982‑0847 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Maximo Diamond, 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
Internal MedicinePrimary specialty
YesAccepts Medicare assignment
35Years since medical school (graduated 1991)
University Of California, Irvine, California College Of MedicineMedical school
MaleGender (as listed)
Supportive Wound Care IncGroup practice

Quick answers

Where does Maximo Diamond see patients?
Medicare's clinician data lists 1 practice location in Upland, CA. Call before your visit to confirm the address.
What is Maximo Diamond's specialty?
Medicare lists Internal Medicine as the primary specialty, and also Hospice/Palliative Care and Hospitalist.
Does Maximo Diamond accept Medicare assignment?
Yes. Medicare's clinician data says Maximo Diamond 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 Maximo Diamond?
(888) 982-0847, as listed in official Medicare / NPI Registry data.
What is Maximo Diamond's NPI number?
1063519932. 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 Maximo Diamond is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Maximo Diamond as a member of this group (CMS data updated 2026-10-02).

  • Supportive Wound Care Inc2 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Upland

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

All internal medicine doctors in Upland →

Clinician information

CredentialMD
Medical schoolUniversity Of California, Irvine, California College Of Medicine
Graduation year1991
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1063519932
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