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Internal Medicine

Aaron M. Leary, MD

Works at hospitals in Indianapolis, IN · Indiana

Summary

Dr. Aaron M. Leary, MD is an internal medicine doctor at 1701 N Senate Blvd, Indianapolis, IN 46202. Phone: (888) 484-3258. Accepts Medicare assignment. In 2024, Aaron M. Leary had 148 Original Medicare patients and 516 services. NPI 1477710903. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1701 N Senate Blvd, Indianapolis, IN 46202 · Directions
  • Phone: (888) 484‑3258
  • Medicare: Accepts Medicare assignment
  • Hospital: Indiana University Health
  • Group practice: IU Health Medical Group LLC
  • Medical school: Indiana University School Of Medicine · graduated 2005 (21 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Aaron M. Leary, 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 Aaron M. Leary accept Medicare assignment?
Yes. Medicare's clinician data says Aaron M. Leary 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 Aaron M. Leary see?
In 2024, CMS data shows 148 Original Medicare patients and 516 services for Aaron M. Leary. This counts Original Medicare only and measures volume, not quality.
What is Aaron M. Leary's NPI number?
1477710903. 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 Aaron M. Leary, 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 patients148
Services billed to Medicare516
Different services or procedures9
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)249 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)123 services
  3. Hospital discharge day management, more than 30 minutes (99239)52 services
  4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)33 services
  5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)21 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 cholesterol75%
  • Arthritis60%
  • Depression58%
  • Diabetes54%
  • Stroke or mini-stroke53%

Hospitals where Aaron M. Leary works

Medicare's Facility Affiliation Data lists Aaron M. Leary at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Aaron M. Leary is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Aaron M. Leary as a member of this group (CMS data updated October 2, 2026).

  • IU Health Medical Group LLC4,462 clinicians in the group

Specialties

Find other Internal Medicine doctors in Indiana →

Other internal medicine doctors in Indianapolis

Clinicians with the same Medicare primary specialty in Indianapolis, IN — not a recommendation.

All internal medicine doctors in Indianapolis →

Other clinicians in IU Health Medical Group LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolIndiana University School Of Medicine
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1477710903
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. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians