Quick answers
- Does Lewis M. Attas accept Medicare assignment?
- Yes. Medicare's clinician data says Lewis M. Attas 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 Lewis M. Attas see?
- In 2024, CMS data shows 711 Original Medicare patients and 4,772 services for Lewis M. Attas. This counts Original Medicare only and measures volume, not quality.
- What is Lewis M. Attas's NPI number?
- 1437102571. 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 Lewis M. Attas, 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 | 711 |
|---|---|
| Services billed to Medicare | 4,772 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)1,707 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,268 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)504 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)282 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)237 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%
- Arthritis54%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)41%
- Ischemic heart disease37%
- Diabetes35%
Hospitals where Lewis M. Attas works
Medicare's Facility Affiliation Data lists Lewis M. Attas 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.
- Englewood Hospital and Medical CenterEnglewood, NJ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 310045
Practice locations
Addresses where Lewis M. Attas is enrolled with Medicare (CMS data updated October 2, 2026).
- 350 Engle StEnglewood, NJ 07631 (201) 731‑3178
Group practices
Medicare enrollment lists Lewis M. Attas as a member of this group (CMS data updated October 2, 2026).
- Physician Partners of Englewood PC94 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Englewood
Clinicians with the same Medicare primary specialty in Englewood, NJ — not a recommendation.
Other clinicians in Physician Partners of Englewood PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1982 (44 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1437102571 |
| 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