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Internal Medicine

Leonardo C. Mendoza Iii, MD

Sees patients in Tucson, AZ · Arizona

Summary

Dr. Leonardo C. Mendoza Iii, MD is an internal medicine doctor at 2001 W Orange Grove Rd, Suite 312, Tucson, AZ 85704. Phone: (520) 297-8429. Accepts Medicare assignment. In 2024, Leonardo C. Mendoza Iii had 433 Original Medicare patients and 1,683 services. NPI 1194798496. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 2001 W Orange Grove Rd, Suite 312, Tucson, AZ 85704 · Directions
  • Phone: (520) 297‑8429
  • Medicare: Accepts Medicare assignment
  • Medical school: Medical College Of Ohio · graduated 2003 (23 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Leonardo C. Mendoza Iii, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Leonardo C. Mendoza Iii accept Medicare assignment?
Yes. Medicare's clinician data says Leonardo C. Mendoza Iii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Leonardo C. Mendoza Iii see?
In 2024, CMS data shows 433 Original Medicare patients and 1,683 services for Leonardo C. Mendoza Iii. This counts Original Medicare only and measures volume, not quality.
What is Leonardo C. Mendoza Iii's NPI number?
1194798496. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Leonardo C. Mendoza Iii, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients433
Services billed to Medicare1,683
Different services or procedures51
Participating Medicare providerYes
Average age of these patients80

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)452 services
  2. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)384 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)154 services
  4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)126 services
  5. Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)54 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol67%
  • Arthritis58%
  • Chronic kidney disease37%
  • Depression24%
  • Anxiety24%

Practice locations

Addresses where Leonardo C. Mendoza Iii is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Internal Medicine doctors in Arizona →

Other internal medicine doctors in Tucson

Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.

All internal medicine doctors in Tucson →

Clinician information

CredentialMD
Medical schoolMedical College Of Ohio
Graduation year2003 (23 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1194798496
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 October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians