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Orthopedic Surgery

Marshall P. Allegra, MD

Works at hospitals in Holmdel, NJ · Red Bank, NJ · New Jersey

Summary

Dr. Marshall P. Allegra, MD is an orthopedic surgeon at 1 Riverview Plz, Red Bank, NJ 07701. Phone: (732) 741-2700. Accepts Medicare assignment. In 2024, Marshall P. Allegra had 180 Original Medicare patients and 1,174 services. NPI 1740364256. 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 Marshall P. Allegra, 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 Marshall P. Allegra accept Medicare assignment?
Yes. Medicare's clinician data says Marshall P. Allegra 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 Marshall P. Allegra see?
In 2024, CMS data shows 180 Original Medicare patients and 1,174 services for Marshall P. Allegra. This counts Original Medicare only and measures volume, not quality.
What is Marshall P. Allegra's NPI number?
1740364256. 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 Marshall P. Allegra, 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 patients180
Services billed to Medicare1,174
Different services or procedures29
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)515 services
  2. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)282 services
  3. Aspiration and/or injection of fluid from large joint (20610)159 services
  4. Injection into tendon or ligament (20550)68 services
  5. New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)45 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%
  • Arthritis75%
  • Ischemic heart disease36%
  • Diabetes34%
  • Anxiety23%

Hospitals where Marshall P. Allegra works

Medicare's Facility Affiliation Data lists Marshall P. Allegra 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.

  • Bayshore Medical CenterHolmdel, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310112
  • Riverview Medical CenterRed Bank, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310034

Practice locations

Addresses where Marshall P. Allegra is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Orthopedic Surgery doctors in New Jersey →

Other orthopedic surgeons in Red Bank

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

All orthopedic surgeons in Red Bank →

Clinician information

CredentialMD
Graduation year1982 (44 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1740364256
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