Quick answers
- Does Elion J. Krok accept Medicare assignment?
- Yes. Medicare's clinician data says Elion J. Krok 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 Elion J. Krok see?
- In 2024, CMS data shows 401 Original Medicare patients and 5,999 services for Elion J. Krok. This counts Original Medicare only and measures volume, not quality.
- What is Elion J. Krok's NPI number?
- 1538468491. 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 Elion J. Krok, 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 | 401 |
|---|---|
| Services billed to Medicare | 5,999 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)3,430 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)1,516 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)539 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)304 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)23 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%
- Diabetes56%
- Arthritis44%
- Chronic kidney disease44%
- Depression42%
Hospitals where Elion J. Krok works
Medicare's Facility Affiliation Data lists Elion J. Krok 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.
- Clara Maass Medical CenterBelleville, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310009
- Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310076
- Morristown Medical CenterMorristown, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310015
Practice locations
Addresses where Elion J. Krok is enrolled with Medicare (CMS data updated October 2, 2026).
- 993 Pleasant Valley WayWest Orange, NJ 07052 (973) 544‑8901
Group practices
Medicare enrollment lists Elion J. Krok as a member of this group (CMS data updated October 2, 2026).
- Elion Krok, M.D. PC2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in West Orange
Clinicians with the same Medicare primary specialty in West Orange, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538468491 |
| 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