Quick answers
- Does Ka Yeon Lee accept Medicare assignment?
- Yes. Medicare's clinician data says Ka Yeon Lee 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 Ka Yeon Lee see?
- In 2024, CMS data shows 36 Original Medicare patients and 79 services for Ka Yeon Lee. This counts Original Medicare only and measures volume, not quality.
- What is Ka Yeon Lee's NPI number?
- 1578985040. 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 Ka Yeon Lee, 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 | 36 |
|---|---|
| Services billed to Medicare | 79 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)33 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)12 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)11 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%
- Diabetes64%
- Arthritis56%
- Chronic kidney disease53%
- Anxiety44%
Hospitals where Ka Yeon Lee works
Medicare's Facility Affiliation Data lists Ka Yeon Lee 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
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310001
Practice locations
Addresses where Ka Yeon Lee is enrolled with Medicare (CMS data updated October 2, 2026).
- 400 Sylvan Ave, Suite 108Englewood Cliffs, NJ 07632 (201) 408‑5314
Group practices
Medicare enrollment lists Ka Yeon Lee as a member of this group (CMS data updated October 2, 2026).
- Pan S Ko MD PC3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578985040 |
| 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