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Internal Medicine

Rafael L. Barretto, DO

Works at hospitals in Warren, MI · Michigan

Summary

Dr. Rafael L. Barretto, DO is an internal medicine doctor at 11800 E 12 Mile Rd, Warren, MI 48093. Phone: (586) 573-5000. Accepts Medicare assignment. In 2024, Rafael L. Barretto had 45 Original Medicare patients and 101 services. NPI 1942202122. 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: 11800 E 12 Mile Rd, Warren, MI 48093 · Directions (2 more locations)
  • Phone: (586) 573‑5000
  • Medicare: Accepts Medicare assignment
  • Hospital: Henry Ford Health Warren Hospital
  • Group practice: Henry Ford Health Macomb Oakland Hospital
  • Medical school: Michigan State University College Of Human Medicine · graduated 1998 (28 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Rafael L. Barretto, 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 Rafael L. Barretto accept Medicare assignment?
Yes. Medicare's clinician data says Rafael L. Barretto 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 Rafael L. Barretto see?
In 2024, CMS data shows 45 Original Medicare patients and 101 services for Rafael L. Barretto. This counts Original Medicare only and measures volume, not quality.
What is Rafael L. Barretto's NPI number?
1942202122. 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 Rafael L. Barretto, 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 patients45
Services billed to Medicare101
Different services or procedures7
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)41 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)22 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)20 services
  4. Hospital discharge day management, more than 30 minutes (99239)13 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%
  • Arthritis69%
  • Diabetes64%
  • Heart failure64%
  • Chronic kidney disease60%

Hospitals where Rafael L. Barretto works

Medicare's Facility Affiliation Data lists Rafael L. Barretto 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 Rafael L. Barretto is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Rafael L. Barretto as a member of this group (CMS data updated October 2, 2026).

  • Henry Ford Health Macomb Oakland Hospital172 clinicians in the group

Specialties

Find other Internal Medicine doctors in Michigan →

Other internal medicine doctors in Warren

Clinicians with the same Medicare primary specialty in Warren, MI — not a recommendation.

All internal medicine doctors in Warren →

Other clinicians in Henry Ford Health Macomb Oakland Hospital

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

Clinician information

CredentialDO
Medical schoolMichigan State University College Of Human Medicine
Graduation year1998 (28 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1942202122
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