Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

David L. Irwin, DO

Works at hospitals in Quakertown, PA · Coaldale, PA · Bethlehem, PA · Pennsylvania

Summary

Dr. David L. Irwin, DO is an internal medicine doctor at 1872 St Lukes Blvd, Easton, PA 18045. Accepts Medicare assignment. In 2024, David L. Irwin had 354 Original Medicare patients and 871 services. NPI 1467987081. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about David L. Irwin, 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 David L. Irwin accept Medicare assignment?
Yes. Medicare's clinician data says David L. Irwin 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 David L. Irwin see?
In 2024, CMS data shows 354 Original Medicare patients and 871 services for David L. Irwin. This counts Original Medicare only and measures volume, not quality.
What is David L. Irwin's NPI number?
1467987081. 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 David L. Irwin, 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 patients354
Services billed to Medicare871
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 35 minutes (99232)516 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)151 services
  3. Hospital discharge day management, more than 30 minutes (99239)121 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)61 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)12 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%
  • Chronic kidney disease63%
  • Arthritis57%
  • Diabetes53%
  • Ischemic heart disease52%

Hospitals where David L. Irwin works

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

  • 1872 St Lukes BlvdEaston, PA 18045
  • 1872 St Lukes Blvd, Fl 1Easton, PA 18045
  • 801 Ostrm StBethlehem, PA 18015

Group practices

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

  • St Lukes Physician Group Inc2,198 clinicians in the group

Specialties

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Easton

Clinicians with the same Medicare primary specialty in Easton, PA — not a recommendation.

All internal medicine doctors in Easton →

Other clinicians in St Lukes Physician Group Inc

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

Clinician information

CredentialDO
Medical schoolLake Erie Col Of Osteo Med At Seton Hill Univ
Graduation year2017 (9 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1467987081
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