Quick answers
- Does Ian R. McKenzie accept Medicare assignment?
- Yes. Medicare's clinician data says Ian R. McKenzie 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 Ian R. McKenzie see?
- In 2024, CMS data shows 180 Original Medicare patients and 229 services for Ian R. McKenzie. This counts Original Medicare only and measures volume, not quality.
- What is Ian R. McKenzie's NPI number?
- 1326541137. 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 Ian R. McKenzie, 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 | 180 |
|---|---|
| Services billed to Medicare | 229 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)24 services
- Anesthesia for exam of colon using an endoscope (00812)21 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)20 services
- Anesthesia for procedure for total knee joint replacement (01402)12 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)11 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 cholesterol75%
- High blood pressure73%
- Arthritis63%
- Ischemic heart disease29%
- Atrial fibrillation26%
- Diabetes25%
Hospitals where Ian R. McKenzie works
Medicare's Facility Affiliation Data lists Ian R. McKenzie 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.
- Frisbie Memorial HospitalRochester, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300014
- Portsmouth Regional HospitalPortsmouth, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300029
Practice locations
Addresses where Ian R. McKenzie is enrolled with Medicare (CMS data updated October 2, 2026).
- 333 Borthwick AvePortsmouth, NH 03801 (603) 436‑5110
- 4 W Rd, Suite B1Stratham, NH 03885 (603) 772‑2076
Group practices
Medicare enrollment lists Ian R. McKenzie as a member of these groups (CMS data updated October 2, 2026).
- Portsmouth Anesthesia Associates PA40 clinicians in the group
- Stratham Anesthesia Associates PLLC25 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Portsmouth
Clinicians with the same Medicare primary specialty in Portsmouth, NH — not a recommendation.
Other clinicians in Portsmouth Anesthesia Associates PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Edward Via Col Of Osteo Medicine-Carolinas Campus |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326541137 |
| 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