Quick answers
- Does Nicole J. Sleiman accept Medicare assignment?
- Yes. Medicare's clinician data says Nicole J. Sleiman 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 Nicole J. Sleiman see?
- In 2024, CMS data shows 160 Original Medicare patients and 603 services for Nicole J. Sleiman. This counts Original Medicare only and measures volume, not quality.
- What is Nicole J. Sleiman's NPI number?
- 1831370402. 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 Nicole J. Sleiman, 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 | 160 |
|---|---|
| Services billed to Medicare | 603 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)56 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)42 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)38 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)34 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)29 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%
- Arthritis56%
- Ischemic heart disease47%
- Diabetes46%
- Chronic kidney disease46%
Hospitals where Nicole J. Sleiman works
Medicare's Facility Affiliation Data lists Nicole J. Sleiman 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.
- Anna Jaques HospitalNewburyport, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220029
- Holy Family HospitalMethuen, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220080
- Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071
- Merrimack Health Lawrence HospitalLawrence, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220010
- North Shore Medical Center -Salem, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220035
Practice locations
Addresses where Nicole J. Sleiman is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Hutchinson DrDanvers, MA 01923 (978) 739‑6950
- 500 Merrimack StLawrence, MA 01843 (978) 557‑8900
- 600 Primrose StHaverhill, MA 01830 (978) 469‑7100
Group practices
Medicare enrollment lists Nicole J. Sleiman as a member of these groups (CMS data updated October 2, 2026).
- Mass General Brigham Medical Group Northern Massachusetts Inc827 clinicians in the group
- Mass General Brigham Community Physicians Inc428 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Mass General Brigham Medical Group Northern Massachusetts Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1831370402 |
| 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