Quick answers
- Does Malkah D. Tiefenbrun accept Medicare assignment?
- Yes. Medicare's clinician data says Malkah D. Tiefenbrun 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 Malkah D. Tiefenbrun see?
- In 2024, CMS data shows 119 Original Medicare patients and 128 services for Malkah D. Tiefenbrun. This counts Original Medicare only and measures volume, not quality.
- What is Malkah D. Tiefenbrun's NPI number?
- 1275293268. 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 Malkah D. Tiefenbrun, 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 | 119 |
|---|---|
| Services billed to Medicare | 128 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)77 services
- Emergency department visit with moderate level of medical decision making (99284)30 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%
- Arthritis61%
- Diabetes60%
- Ischemic heart disease56%
- Anxiety42%
Practice locations
Addresses where Malkah D. Tiefenbrun is enrolled with Medicare (CMS data updated October 2, 2026).
- 170 William StNew York, NY 10038 (212) 312‑5000
- 525 E 68th StNew York, NY 10021
- 65 James StEdison, NJ 08818 (732) 321‑7000
Group practices
Medicare enrollment lists Malkah D. Tiefenbrun as a member of these groups (CMS data updated October 2, 2026).
- Weill Medical College of Cornell2,051 clinicians in the group
- Middlesex Emergency Physicians, P.A.40 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Weill Medical College of Cornell
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275293268 |
| 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