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General Surgery

Louis T. Difazio, MD

Works at hospitals in Morristown, NJ · Altoona, PA · New Jersey, Pennsylvania

Summary

Dr. Louis T. Difazio, MD is a general surgeon at 435 S St, Suite 360, Morristown, NJ 07960. Phone: (973) 971-7200. Accepts Medicare assignment. In 2024, Louis T. Difazio had 345 Original Medicare patients and 568 services. NPI 1376510032. 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: General surgeon (Medicare lists General Surgery)
  • Address: 435 S St, Suite 360, Morristown, NJ 07960 · Directions (2 more locations)
  • Phone: (973) 971‑7200
  • Medicare: Accepts Medicare assignment
  • Hospitals: Morristown Medical Center, UPMC Altoona
  • Group practice: UPMC Altoona Regional Health Services, Inc. (+1 more)
  • Medical school: University Of Pittsburgh School Of Medicine · graduated 1990 (36 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Louis T. Difazio, 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 Louis T. Difazio accept Medicare assignment?
Yes. Medicare's clinician data says Louis T. Difazio 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 Louis T. Difazio see?
In 2024, CMS data shows 345 Original Medicare patients and 568 services for Louis T. Difazio. This counts Original Medicare only and measures volume, not quality.
What is Louis T. Difazio's NPI number?
1376510032. 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 Louis T. Difazio, 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 patients345
Services billed to Medicare568
Different services or procedures47
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)235 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)108 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)59 services
  4. Critical care, first 30-74 minutes (99291)47 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)16 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%
  • Arthritis55%
  • Ischemic heart disease47%
  • Stroke or mini-stroke45%
  • Anxiety42%

Hospitals where Louis T. Difazio works

Medicare's Facility Affiliation Data lists Louis T. Difazio 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.

  • Morristown Medical CenterMorristown, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310015
  • UPMC AltoonaAltoona, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390073

Practice locations

Addresses where Louis T. Difazio is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Louis T. Difazio as a member of these groups (CMS data updated October 2, 2026).

  • UPMC Altoona Regional Health Services, Inc.187 clinicians in the group
  • Specialty Care of Practice Associates PA15 clinicians in the group

Specialties

Find other General Surgery doctors in New Jersey →

Other general surgeons in Morristown

Clinicians with the same Medicare primary specialty in Morristown, NJ — not a recommendation.

All general surgeons in Morristown →

Other clinicians in UPMC Altoona Regional Health Services, Inc.

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

Clinician information

CredentialMD
Medical schoolUniversity Of Pittsburgh School Of Medicine
Graduation year1990 (36 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1376510032
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