Dr. Iain Macewan, M.D.
What this data tells you about Dr. Macewan
Dr. Iain Macewan is a radiology - diagnostic specialist in San Diego, CA, with 13 years of NPI registration. Based on federal Medicare data, Dr. Macewan performed 4,871 Medicare services across 1,325 unique beneficiaries.
Between the years covered by Open Payments, Dr. Macewan received a total of $384 from 10 pharmaceutical and/or device companies across 11 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiology - diagnostic. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Macewan is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| CT guidance for radiation therapy This procedure uses computed tomography imaging to guide the precise placement of radiation therapy fields. It ensures accurate positioning for targeted treatment delivery. |
1,194 | $107 | $696 |
| Complex proton beam radiation treatment A specialized form of radiation therapy that uses protons to deliver precise doses of energy to target tissues. This technique is designed to minimize exposure to surrounding healthy organs. |
1,083 | $1,027 | $6,348 |
| Intermediate proton beam radiation treatment A radiation therapy procedure using proton beams to treat a specific area of the body. This method delivers targeted energy to destroy abnormal cells while minimizing exposure to surrounding healthy tissue. |
606 | $913 | $5,622 |
| Stereoscopic X-ray guidance for radiation therapy localization This procedure uses stereoscopic X-ray imaging to precisely locate the target area for radiation therapy delivery. |
492 | $68 | $424 |
| Gadolinium MRI contrast injection Administration of a gadolinium-based contrast agent to enhance magnetic resonance imaging. The dose is measured per milliliter of the agent injected. |
267 | $1 | $9 |
| Continuing radiation therapy consultation per week A weekly consultation to review and manage ongoing radiation therapy treatment. |
256 | $79 | $449 |
| Calculation of radiation therapy dose | 240 | $58 | $366 |
| Radiation treatment management, 5 sessions Oversight and management of a radiation therapy course consisting of five treatment sessions. |
239 | $160 | $1,000 |
| Design and construction of complex radiation treatment device This code covers the design and construction of a complex radiation treatment device. It does not specify the clinical purpose or conditions treated. |
98 | $109 | $710 |
| High precision radiation therapy planning This procedure involves the detailed planning and setup required for delivering high-precision radiation therapy to a target area of the body. |
69 | $1,676 | $11,032 |
| Complex radiation therapy planning | 55 | $141 | $886 |
| Nuclear medicine scan from skull base to mid-thigh with CT A nuclear medicine imaging study covering the area from the base of the skull to the middle of the thighs, performed alongside a CT scan. |
49 | $1,373 | $7,675 |
| New patient office visit, complex (60-74 min) | 48 | $160 | $545 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 47 | $281 | $1,250 |
| Special radiation treatment | 42 | $118 | $733 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
38 | $134 | $388 |
| Cranial lesion radiation therapy Treatment of a brain lesion using radiation delivered over multiple sessions. |
32 | $936 | $7,820 |
| Respiratory data collection for radiation therapy planning This procedure involves gathering respiratory data to help develop the optimal radiation treatment plan. |
16 | $377 | $2,632 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
2.4 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Macewan is a mixed practice specialist, with above-average Medicare volume (top 10% in CA), with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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