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Internal Medicine

Donald H. Perlo, MD

Works at hospitals in Boston, MA · Cambridge, MA · Massachusetts

Summary

Dr. Donald H. Perlo, MD is an internal medicine doctor at 22 Mill St, Suite 101, Arlington, MA 02476. Phone: (781) 646-4345. Accepts Medicare assignment. In 2024, Donald H. Perlo had 48 Original Medicare patients and 83 services. NPI 1366555260. 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: 22 Mill St, Suite 101, Arlington, MA 02476 · Directions
  • Phone: (781) 646‑4345
  • Medicare: Accepts Medicare assignment
  • Hospitals: Beth Israel Deaconess Medical Center, Mount Auburn Hospital
  • Group practice: Arlington Family Practice PC
  • Medical school: Jefferson Medical College Of Thomas Jefferson University · graduated 1991 (35 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Donald H. Perlo, 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 Donald H. Perlo accept Medicare assignment?
Yes. Medicare's clinician data says Donald H. Perlo 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 Donald H. Perlo see?
In 2024, CMS data shows 48 Original Medicare patients and 83 services for Donald H. Perlo. This counts Original Medicare only and measures volume, not quality.
What is Donald H. Perlo's NPI number?
1366555260. 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 Donald H. Perlo, 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 patients48
Services billed to Medicare83
Different services or procedures19
Participating Medicare providerYes
Average age of these patients70

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)26 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 cholesterol52%
  • High blood pressure46%
  • Arthritis42%
  • Anxiety31%
  • Depression25%

Hospitals where Donald H. Perlo works

Medicare's Facility Affiliation Data lists Donald H. Perlo 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 Donald H. Perlo is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Donald H. Perlo as a member of this group (CMS data updated October 2, 2026).

  • Arlington Family Practice PC3 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Arlington

Clinicians with the same Medicare primary specialty in Arlington, MA — not a recommendation.

All internal medicine doctors in Arlington →

Other clinicians in Arlington Family Practice PC

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

Clinician information

CredentialMD
Medical schoolJefferson Medical College Of Thomas Jefferson University
Graduation year1991 (35 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1366555260
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