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Internal Medicine

Abdul M. Siddiqui, DO

Works at hospitals in West Islip, NY · Rockville Centre, NY · New York

Summary

Dr. Abdul M. Siddiqui, DO is an internal medicine doctor at 100 Port Washington Blvd, Roslyn, NY 11576. Accepts Medicare assignment. In 2024, Abdul M. Siddiqui had 166 Original Medicare patients and 428 services. NPI 1790312973. 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: 100 Port Washington Blvd, Roslyn, NY 11576 · Directions (1 more location)
  • Medicare: Accepts Medicare assignment
  • Hospitals: Good Samaritan Hospital Medical Center, Mercy Medical Center
  • Group practice: CHS Physician Partners PC
  • Medical school: graduated 1994 (32 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Abdul M. Siddiqui, 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 Abdul M. Siddiqui accept Medicare assignment?
Yes. Medicare's clinician data says Abdul M. Siddiqui 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 Abdul M. Siddiqui see?
In 2024, CMS data shows 166 Original Medicare patients and 428 services for Abdul M. Siddiqui. This counts Original Medicare only and measures volume, not quality.
What is Abdul M. Siddiqui's NPI number?
1790312973. 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 Abdul M. Siddiqui, 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 patients166
Services billed to Medicare428
Different services or procedures29
Participating Medicare providerYes
Average age of these patients78

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)100 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)88 services
  3. Telephone medical discussion with physician, 11-20 minutes (99442)36 services
  4. Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (87426)31 services
  5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)20 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 cholesterol75%
  • High blood pressure73%
  • Arthritis48%
  • Ischemic heart disease38%
  • Diabetes25%
  • Anxiety25%

Hospitals where Abdul M. Siddiqui works

Medicare's Facility Affiliation Data lists Abdul M. Siddiqui 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.

  • Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330286
  • Mercy Medical CenterRockville Centre, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330259

Practice locations

Addresses where Abdul M. Siddiqui is enrolled with Medicare (CMS data updated October 2, 2026).

  • 100 Port Washington BlvdRoslyn, NY 11576
  • 1000 N Village AveRockville Center, NY 11570

Group practices

Medicare enrollment lists Abdul M. Siddiqui as a member of this group (CMS data updated October 2, 2026).

  • CHS Physician Partners PC743 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Roslyn

Clinicians with the same Medicare primary specialty in Roslyn, NY — not a recommendation.

All internal medicine doctors in Roslyn →

Other clinicians in CHS Physician Partners PC

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

Clinician information

CredentialDO
Graduation year1994 (32 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1790312973
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