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Internal Medicine

Sung Wook Sun, MD

Works at hospitals in Englewood, NJ · Teaneck, NJ · New Jersey

Summary

Dr. Sung Wook Sun, MD is an internal medicine doctor at 350 Engle St, Englewood, NJ 07631. Phone: (201) 894-3158. Accepts Medicare assignment. In 2024, Sung Wook Sun had 467 Original Medicare patients and 2,455 services. NPI 1932125994. 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 Sung Wook Sun, 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 Sung Wook Sun accept Medicare assignment?
Yes. Medicare's clinician data says Sung Wook Sun 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 Sung Wook Sun see?
In 2024, CMS data shows 467 Original Medicare patients and 2,455 services for Sung Wook Sun. This counts Original Medicare only and measures volume, not quality.
What is Sung Wook Sun's NPI number?
1932125994. 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 Sung Wook Sun, 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 patients467
Services billed to Medicare2,455
Different services or procedures42
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)396 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)265 services
  3. Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)256 services
  4. Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)199 services
  5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)186 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%
  • Diabetes51%
  • Arthritis37%
  • Chronic kidney disease30%
  • Osteoporosis28%

Hospitals where Sung Wook Sun works

Medicare's Facility Affiliation Data lists Sung Wook Sun 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.

  • Englewood Hospital and Medical CenterEnglewood, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310045
  • Holy Name Medical CenterTeaneck, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310008

Practice locations

Addresses where Sung Wook Sun is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Sung Wook Sun as a member of this group (CMS data updated October 2, 2026).

  • Medical Associates of Englewood PC540 clinicians in the group

Specialties

Find other Internal Medicine doctors in New Jersey →

Other internal medicine doctors in Englewood

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

All internal medicine doctors in Englewood →

Other clinicians in Medical Associates of Englewood PC

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

Clinician information

CredentialMD
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)1932125994
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