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

Hospitalist

Hassan N. Zaidi, MD

Works at hospitals in Toms River, NJ · New Brunswick, NJ · New Jersey

Summary

Dr. Hassan N. Zaidi, MD is a hospitalist at 1 Clara Maass Dr, Belleville, NJ 07109. Phone: (973) 450-2000. Accepts Medicare assignment. In 2024, Hassan N. Zaidi had 438 Original Medicare patients and 2,320 services. NPI 1518270065. 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 Hassan N. Zaidi, 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 Hassan N. Zaidi accept Medicare assignment?
Yes. Medicare's clinician data says Hassan N. Zaidi 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 Hassan N. Zaidi see?
In 2024, CMS data shows 438 Original Medicare patients and 2,320 services for Hassan N. Zaidi. This counts Original Medicare only and measures volume, not quality.
What is Hassan N. Zaidi's NPI number?
1518270065. 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 Hassan N. Zaidi, 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 patients438
Services billed to Medicare2,320
Different services or procedures25
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)530 services
  2. Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)485 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)474 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)281 services
  5. Hospital discharge day management, more than 30 minutes (99239)159 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%
  • Arthritis56%
  • Ischemic heart disease55%
  • Heart failure52%
  • Chronic kidney disease47%

Hospitals where Hassan N. Zaidi works

Medicare's Facility Affiliation Data lists Hassan N. Zaidi 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 Hassan N. Zaidi is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Hassan N. Zaidi as a member of these groups (CMS data updated October 2, 2026).

  • RWJBH Emergency Medicine Associates, LLC848 clinicians in the group
  • Excela Health Physician Practices, Inc481 clinicians in the group
  • Plover Inpatient Services LLC161 clinicians in the group
  • Pennsylvania Hospitalist Group, LLC59 clinicians in the group
  • Cov Clinic NJ LLC9 clinicians in the group

Specialties

Find other Hospitalist doctors in New Jersey →

Other hospitalists in New Jersey

Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.

All hospitalists in New Jersey →

Other clinicians in RWJBH Emergency Medicine Associates, LLC

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

Clinician information

CredentialMD
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1518270065
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