Quick answers
- Does Rivkie Penstein-Hirt accept Medicare assignment?
- Yes. Medicare's clinician data says Rivkie Penstein-Hirt 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 Rivkie Penstein-Hirt see?
- In 2024, CMS data shows 77 Original Medicare patients and 117 services for Rivkie Penstein-Hirt. This counts Original Medicare only and measures volume, not quality.
- What is Rivkie Penstein-Hirt's NPI number?
- 1801931191. 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 Rivkie Penstein-Hirt, 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 | 77 |
|---|---|
| Services billed to Medicare | 117 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)41 services
- Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)33 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)31 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%
- Arthritis56%
- High blood pressure49%
- Osteoporosis38%
- Diabetes25%
- Anxiety25%
Practice locations
Addresses where Rivkie Penstein-Hirt is enrolled with Medicare (CMS data updated October 2, 2026).
- 1436 BroadwayHewlett, NY 11557 (929) 210‑6570
- 325 Park AveHuntington, NY 11743 (631) 659‑4400
Group practices
Medicare enrollment lists Rivkie Penstein-Hirt as a member of this group (CMS data updated October 2, 2026).
- North Shore Medical Group of the Mount Sinai School of Medicine331 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Hewlett
Clinicians with the same Medicare primary specialty in Hewlett, NY — not a recommendation.
Other clinicians in North Shore Medical Group of the Mount Sinai School of Medicine
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801931191 |
| 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
- 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