Dr. William David, MD PHD
What this data tells you about Dr. David
Dr. William David is a neurology specialist in Boston, MA, with 20 years of NPI registration. Based on federal Medicare data, Dr. David performed 13,947 Medicare services across 466 unique beneficiaries.
Between the years covered by Open Payments, Dr. David received a total of $149,671 from 5 pharmaceutical and/or device companies across 36 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. David 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. |
12,308 | $5 | $19 |
| Rimabotulinumtoxinb injection, 100 units An injection of rimabotulinumtoxinb administered in a dose of 100 units. |
1,150 | $10 | $37 |
| Electromyography of arm or leg muscles A test that measures the electrical activity in the muscles of the arm or leg using a needle electrode. It helps evaluate the health of muscles and the nerve cells that control them. |
82 | $89 | $443 |
| Autonomic nervous system function test This test evaluates how well the sympathetic nervous system is functioning. It assesses the automatic control of bodily processes such as heart rate and blood pressure. |
71 | $36 | $185 |
| Autonomic nervous system testing with tilt This test evaluates the function of the sympathetic and parasympathetic nervous systems. It involves monitoring the patient for at least five minutes while they are tilted. |
70 | $72 | $359 |
| Needle measurement of electrical activity in muscle with injection of chemical for paralysis of nerve muscle | 41 | $16 | $81 |
| 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. |
41 | $133 | $761 |
| Limited needle EMG of arm or leg muscles A test that measures the electrical activity in specific muscles of the arm or leg using a needle electrode. This limited study evaluates muscle function in a targeted area. |
29 | $57 | $291 |
| 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. |
20 | $96 | $542 |
| Chemical paralysis of salivary glands, bilateral Injection of a chemical agent to paralyze the salivary glands on both sides of the mouth. |
19 | $98 | $699 |
| Nerve conduction study, 3-4 tests A diagnostic test that measures how well nerves send electrical signals. It involves performing 3 to 4 separate nerve conduction studies to evaluate nerve function. |
18 | $100 | $515 |
| Nerve conduction studies, 7-8 tests A series of 7 to 8 nerve conduction tests to evaluate how well nerves are sending signals to muscles. |
18 | $157 | $806 |
| Nerve conduction studies, 11-12 A diagnostic test that measures how well nerves send electrical signals. It involves performing 11 to 12 separate nerve conduction studies. |
18 | $124 | $654 |
| Nerve conduction study, 9-10 studies A diagnostic test that measures how well nerves send electrical signals. It involves performing 9 to 10 separate nerve conduction studies to evaluate nerve function. |
17 | $190 | $968 |
| 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. |
16 | $134 | $809 |
| Nerve conduction studies, 5-6 tests A series of 5 to 6 tests that measure how well nerves send electrical signals. The procedure evaluates nerve function and helps identify damage or dysfunction. |
15 | $120 | $618 |
| Nerve conduction studies, 13 or more A diagnostic test that measures how well nerves send electrical signals. This code applies when 13 or more individual nerve studies are performed. |
14 | $158 | $776 |
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 (96%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 6% for neurology in MA.
Geographic Context
0.0 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. David is a mixed practice specialist, with above-average Medicare volume (top 4% in MA), with consulting-driven industry engagement in the top 6% of MA peers, with 20 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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