Dr. Caroline Sizer, M.D.
What this data tells you about Dr. Sizer
Dr. Caroline Sizer is a brain injury medicine physician in Braintree, MA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Sizer performed 127,701 Medicare services across 1,228 unique beneficiaries.
Between the years covered by Open Payments, Dr. Sizer received a total of $9,425 from 7 pharmaceutical and/or device companies across 33 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in brain injury medicine (physical medicine & rehabilitation) physician. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Sizer 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 |
|---|---|---|---|
| Botox injection, per unit An injection of onabotulinumtoxinA, a medication used to temporarily relax muscles or reduce gland activity. The dose is measured in units, with this code representing a single unit administered. |
125,726 | $5 | $8 |
| Nursing facility visit, low complexity A daily follow-up visit for an existing patient in a nursing facility involving straightforward medical decision making. The visit requires at least 15 minutes of time if time is used to determine the level of care. |
359 | $64 | $244 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 345 | $71 | $225 |
| Chemical nerve block injection, 1-4 muscles An injection of a chemical agent to paralyze specific muscles in an arm or leg. This procedure targets one to four muscles in the first extremity treated. |
213 | $122 | $518 |
| Baclofen injection, 10 mg A 10 mg dose of the muscle relaxant baclofen is injected into the body. |
179 | $143 | $360 |
| Injection of chemical for paralysis of nerve muscles on arm or leg, 1-4 muscles, each additional extremity | 167 | $79 | $518 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
144 | $90 | $323 |
| Initial nursing facility care, high complexity An initial visit by a healthcare provider to a patient in a nursing facility involving a high level of medical decision making, lasting at least 45 minutes. |
127 | $155 | $586 |
| Chemical nerve block injection, 5+ arm/leg muscles Injection of a chemical agent to paralyze five or more muscles in the first extremity treated. |
117 | $152 | $550 |
| Initial nursing facility care, moderate complexity Initial care provided to a patient in a nursing facility with moderate medical decision making, taking at least 35 minutes. |
90 | $113 | $458 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
54 | $89 | $252 |
| Destruction of peripheral nerve or branch | 50 | $156 | $648 |
| Chemical nerve block for neck muscles Injection of a chemical agent to paralyze specific muscles on the side of the neck, excluding the voice box. |
43 | $109 | $443 |
| Spinal drug pump reprogramming and refill Electronic adjustment of the settings for a spinal drug infusion pump and replenishment of the medication reservoir. |
27 | $83 | $300 |
| 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. |
25 | $133 | $300 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
21 | $133 | $350 |
| New patient office visit, complex (60-74 min) | 14 | $180 | $357 |
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 ›
The majority of payments (92%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in brain injury medicine (physical medicine & rehabilitation) physician and does not inherently indicate bias, but patients may wish to be aware.
Geographic Context
3.7 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. Sizer is a mixed practice specialist, with moderate Medicare volume, with speaking/promotional industry engagement, with 15 years of NPI registration.
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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