Quick answers
- Does Alyssa H. Lowenwirt accept Medicare assignment?
- Yes. Medicare's clinician data says Alyssa H. Lowenwirt 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 Alyssa H. Lowenwirt see?
- In 2024, CMS data shows 128 Original Medicare patients and 189 services for Alyssa H. Lowenwirt. This counts Original Medicare only and measures volume, not quality.
- What is Alyssa H. Lowenwirt's NPI number?
- 1861999716. 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 Alyssa H. Lowenwirt, 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 | 128 |
|---|---|
| Services billed to Medicare | 189 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Anesthesia for procedure on chest with 1 lung inflated (00541)15 services
- Insertion of artery tube for blood sampling or infusion through skin (36620)15 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)14 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)12 services
- Injection of local anesthetic for abdominal wall pain control on both sides using imaging guidance (64488)12 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 pressure68%
- Arthritis45%
- Ischemic heart disease40%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)28%
- Anxiety27%
Hospitals where Alyssa H. Lowenwirt works
Medicare's Facility Affiliation Data lists Alyssa H. Lowenwirt 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.
- Northern Westchester HospitalMount Kisco, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330162
Practice locations
Addresses where Alyssa H. Lowenwirt is enrolled with Medicare (CMS data updated October 2, 2026).
- 27005 75th AveNew Hyde Park, NY 11040 (718) 470‑7000
Group practices
Medicare enrollment lists Alyssa H. Lowenwirt as a member of this group (CMS data updated October 2, 2026).
- North Shore - Lij Anesthesiology, PC1,003 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in New Hyde Park
Clinicians with the same Medicare primary specialty in New Hyde Park, NY — not a recommendation.
Other clinicians in North Shore - Lij Anesthesiology, PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861999716 |
| 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