Quick answers
- Does William J. Ennis Iii accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Ennis Iii 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 William J. Ennis Iii see?
- In 2024, CMS data shows 40 Original Medicare patients and 41 services for William J. Ennis Iii. This counts Original Medicare only and measures volume, not quality.
- What is William J. Ennis Iii's NPI number?
- 1356447254. 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 William J. Ennis Iii, 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 | 40 |
|---|---|
| Services billed to Medicare | 41 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
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 cholesterol70%
- High blood pressure58%
- Arthritis55%
Hospitals where William J. Ennis Iii works
Medicare's Facility Affiliation Data lists William J. Ennis Iii 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.
- Concord HospitalConcord, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 300001
Practice locations
Addresses where William J. Ennis Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 264 Pleasant StConcord, NH 03301 (603) 224‑3368
Group practices
Medicare enrollment lists William J. Ennis Iii as a member of this group (CMS data updated October 2, 2026).
- Northeast Orthopaedic Alliance PLLC291 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Concord
Clinicians with the same Medicare primary specialty in Concord, NH — not a recommendation.
Other clinicians in Northeast Orthopaedic Alliance PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356447254 |
| 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