Quick answers
- Does Karen Wirtshafter accept Medicare assignment?
- Yes. Medicare's clinician data says Karen Wirtshafter 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 Karen Wirtshafter see?
- In 2024, CMS data shows 723 Original Medicare patients and 2,122 services for Karen Wirtshafter. This counts Original Medicare only and measures volume, not quality.
- What is Karen Wirtshafter's NPI number?
- 1184717142. 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 Karen Wirtshafter, 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 | 723 |
|---|---|
| Services billed to Medicare | 2,122 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)439 services
- Removal of impacted ear wax (69210)355 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)255 services
- Diagnostic exam of nasal passages using an endoscope (31231)222 services
- Removal of impacted cerumen (one or both ears) by physician on same date of service as audiologic function testing (G0268)173 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 cholesterol75%
- High blood pressure72%
- Arthritis51%
- Ischemic heart disease31%
- Diabetes26%
- Anxiety22%
Hospitals where Karen Wirtshafter works
Medicare's Facility Affiliation Data lists Karen Wirtshafter 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.
- Ahs Hospital CorpHackettstown, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310115
- 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
- Overlook Medical CenterSummit, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310051
- Saint Clare's Hospital/ Denville CampusDenville, NJ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 310050
Practice locations
Addresses where Karen Wirtshafter is enrolled with Medicare (CMS data updated October 2, 2026).
- 1211 Hamburg Tpke, Suite 205Wayne, NJ 07470 (973) 633‑0808
- 900 Lanidex Plz, Suite 300Parsippany, NJ 07054 (973) 394‑1818
Group practices
Medicare enrollment lists Karen Wirtshafter as a member of this group (CMS data updated October 2, 2026).
- Ent and Allergy Associates LLP432 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Wayne
Clinicians with the same Medicare primary specialty in Wayne, NJ — not a recommendation.
Other clinicians in Ent and Allergy Associates LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184717142 |
| 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