Quick answers
- Does Lauren Parnell Cassidy accept Medicare assignment?
- Yes. Medicare's clinician data says Lauren Parnell Cassidy 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 Lauren Parnell Cassidy see?
- In 2024, CMS data shows 53 Original Medicare patients and 58 services for Lauren Parnell Cassidy. This counts Original Medicare only and measures volume, not quality.
- What is Lauren Parnell Cassidy's NPI number?
- 1679707244. 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 Lauren Parnell Cassidy, 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 | 53 |
|---|---|
| Services billed to Medicare | 58 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for repair or removal of vagina and urinary procedure (00942)20 services
- Anesthesia for other procedure on lower abdomen outside abdominal cavity (00860)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 pressure74%
- Arthritis58%
- Diabetes40%
- Ischemic heart disease40%
- Osteoporosis26%
Hospitals where Lauren Parnell Cassidy works
Medicare's Facility Affiliation Data lists Lauren Parnell Cassidy 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.
- Mount Sinai South NassauOceanside, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330198
Practice locations
Addresses where Lauren Parnell Cassidy is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Healthy WayOceanside, NY 11572 (516) 632‑3000
Group practices
Medicare enrollment lists Lauren Parnell Cassidy as a member of this group (CMS data updated October 2, 2026).
- Icahn School of Medicine at Mount Sinai176 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Oceanside
Clinicians with the same Medicare primary specialty in Oceanside, NY — not a recommendation.
Other clinicians in Icahn School of Medicine at Mount Sinai
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University Medical College - Nlg |
| 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) | 1679707244 |
| 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