Quick answers
- Does Marie-Genevieve Iselin accept Medicare assignment?
- Yes. Medicare's clinician data says Marie-Genevieve Iselin 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 Marie-Genevieve Iselin see?
- In 2024, CMS data shows 35 Original Medicare patients and 634 services for Marie-Genevieve Iselin. This counts Original Medicare only and measures volume, not quality.
- What is Marie-Genevieve Iselin's NPI number?
- 1093849358. 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 Marie-Genevieve Iselin, 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 | 35 |
|---|---|
| Services billed to Medicare | 634 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Group psychotherapy (90853)258 services
- Psychotherapy, 45 minutes (90834)147 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%
- Depression75%
- Anxiety75%
- Arthritis63%
- Ischemic heart disease46%
Hospitals where Marie-Genevieve Iselin works
Medicare's Facility Affiliation Data lists Marie-Genevieve Iselin 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.
- Long Island Jewish Medical CenterNew Hyde Park, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330195
Practice locations
Addresses where Marie-Genevieve Iselin is enrolled with Medicare (CMS data updated October 2, 2026).
- 10201 66th RdForest Hills, NY 11375 (718) 830‑4000
- 27005 75th AveNew Hyde Park, NY 11040
- 27005 76th Ave GfNew Hyde Park, NY 11040 (718) 470‑7501
- 75 -59Glen Oaks, NY 11004 (718) 470‑8100
- 7559 263rd St, Rm 132Glen Oaks, NY 11004 (718) 470‑8023
Group practices
Medicare enrollment lists Marie-Genevieve Iselin as a member of this group (CMS data updated October 2, 2026).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Forest Hills
Clinicians with the same Medicare primary specialty in Forest Hills, NY — not a recommendation.
Other clinicians in North Shore-Lij Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2004 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1093849358 |
| 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