Quick answers
- Does Charles H. Koo accept Medicare assignment?
- Yes. Medicare's clinician data says Charles H. Koo 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 Charles H. Koo see?
- In 2024, CMS data shows 2,502 Original Medicare patients and 9,075 services for Charles H. Koo. This counts Original Medicare only and measures volume, not quality.
- What is Charles H. Koo's NPI number?
- 1396782595. 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 Charles H. 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.
| Original Medicare patients | 2,502 |
|---|---|
| Services billed to Medicare | 9,075 |
| Different services or procedures | 87 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)1,537 services
- Evaluation of cardiac rhythm monitor system, remote up to 30 days (93298)1,233 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)1,126 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)861 services
- Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days (93297)500 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%
- Atrial fibrillation68%
- Ischemic heart disease61%
- Arthritis52%
- Heart failure45%
Hospitals where Charles H. Koo works
Medicare's Facility Affiliation Data lists Charles H. 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.
- Bayshore Medical CenterHolmdel, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310112
- Jersey Shore University Medical CenterNeptune, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310073
- Ocean Medical CenterBrick, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310052
- 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 Charles H. Koo is enrolled with Medicare (CMS data updated October 2, 2026).
- 11 Meridian RdEatontown, NJ 07724 (732) 663‑0300
Group practices
Medicare enrollment lists Charles H. Koo as a member of this group (CMS data updated October 2, 2026).
- Monmouth Cardiology Associates, LLC44 clinicians in the group
Specialties
Find other Cardiac Electrophysiology doctors in New Jersey →
Other cardiac electrophysiologists in Eatontown
Clinicians with the same Medicare primary specialty in Eatontown, NJ — not a recommendation.
Other clinicians in Monmouth Cardiology Associates, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396782595 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians