Quick answers
- Does Niall J. Duhig accept Medicare assignment?
- Yes. Medicare's clinician data says Niall J. Duhig 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 Niall J. Duhig see?
- In 2024, CMS data shows 350 Original Medicare patients and 977 services for Niall J. Duhig. This counts Original Medicare only and measures volume, not quality.
- What is Niall J. Duhig's NPI number?
- 1578503967. 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 Niall J. Duhig, 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 | 350 |
|---|---|
| Services billed to Medicare | 977 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Critical care, first 30-74 minutes (99291)521 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)88 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)81 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)70 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)41 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%
- Heart failure54%
- COPD52%
- Ischemic heart disease51%
Hospitals where Niall J. Duhig works
Medicare's Facility Affiliation Data lists Niall J. Duhig 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.
- Lawrence & Memorial HospitalNew London, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070007
- Westerly HospitalWesterly, RI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 410013
- Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022
Practice locations
Addresses where Niall J. Duhig is enrolled with Medicare (CMS data updated October 2, 2026).
- 25 Wells StWesterly, RI 02891 (401) 596‑6000
- 365 Montauk AveNew London, CT 06320 (860) 444‑3735
- 45 Wells St, Suite 104Westerly, RI 02891 (401) 348‑0008
Group practices
Medicare enrollment lists Niall J. Duhig as a member of these groups (CMS data updated October 2, 2026).
- Northeast Medical Group Inc1,360 clinicians in the group
- Hospital Medicine Associates LLC211 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Internal Medicinealso
Other pulmonologists in Rhode Island
Clinicians with the same Medicare primary specialty in Rhode Island — not a recommendation.
Other clinicians in Northeast Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1578503967 |
| 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