Bon Chang Koo, MD

Medicare activity in 2024

Official CMS public-use data for Bon Chang Koo, 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.

Most frequent services

1. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)149 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)120 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)64 services
4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)63 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)50 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%
• Arthritis57%
• Ischemic heart disease42%
• Diabetes33%
• Anxiety28%

Hospitals where Bon Chang Koo works

Medicare's Facility Affiliation Data lists Bon Chang Koo 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.

• Hackensack Meridian Health Pascack Valley MedicalWestwood, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310130
• Valley HospitalParamus, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310012

Practice locations

Addresses where Bon Chang Koo is enrolled with Medicare (CMS data updated October 2, 2026).

• 1 W Ridgewood Ave, Suite 301Paramus, NJ 07652 (201) 445‑1660
• 466 Old Hook Rd, Suite 1Emerson, NJ 07630 (201) 967‑8221

Group practices

Medicare enrollment lists Bon Chang Koo as a member of this group (CMS data updated October 2, 2026).

• MPV New Jersey MD Services PC151 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in New Jersey →

Other gastroenterologists in Paramus

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

• Crystal N. Broussard, MD
• Yeseong D. Kim, MD
• Bhavik Bhandari, MD
• Hyman L. Kirschenbaum, MD
• Anthony De Lillo, MD
• Heather Klavan, MD
• Jeremiah S. Kurz, MD
• Robert Levine, MD

All gastroenterologists in Paramus →

Other clinicians in MPV New Jersey MD Services PC

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

• Scott D. Lippe, MD
• Sylva A. Takvorian, MD
• Susan Flanzman, MD
• Michael D. Seidner, MD
• Marigona Gashi, PA
• Jonathan A. Hertz, MD

Clinician information

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