Dr. John Parker, M.D.
What this data tells you about Dr. Parker
Dr. John Parker is a neurology specialist in Whittier, CA, with 12 years of NPI registration. Based on federal Medicare data, Dr. Parker performed 5,889 Medicare services across 4,252 unique beneficiaries.
Between the years covered by Open Payments, Dr. Parker received a total of $757 from 6 pharmaceutical and/or device companies across 12 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurology. 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. Parker 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 |
|---|---|---|---|
| Continuous intraoperative neurophysiology monitoring, remote Remote monitoring of nerve and brain function during surgery, billed in 15-minute increments. |
2,384 | $28 | $152 |
| Placement of skin electrodes and measurement of stimulated sites on arms and legs This procedure involves placing skin electrodes and measuring stimulated sites on the arms and legs. |
789 | $39 | $625 |
| Nerve-muscle junction testing A diagnostic test used to evaluate the function of the connection between nerves and muscles. |
694 | $30 | $126 |
| Intraoperative EEG monitoring Recording brain wave activity during surgery to monitor neurological function. |
647 | $46 | $1,466 |
| Central motor stimulation test of arms and legs This procedure involves placing skin electrodes on the body to measure how the central nervous system stimulates the muscles in the arms and legs. |
444 | $102 | $1,333 |
| Electromyography of 2 extremities A test that measures the electrical activity in the muscles of two arms or legs. It helps evaluate nerve and muscle function. |
416 | $70 | $1,004 |
| Limited needle electromyography A test that measures the electrical activity in muscles of the arm, leg, trunk, or head using a needle electrode. This limited study evaluates muscle function and nerve health. |
177 | $17 | $159 |
| Electromyography of arm or leg muscles A test that measures the electrical activity in the muscles of one arm or leg using a needle electrode. |
154 | $44 | $143 |
| Electromyography of bladder and bowel sphincters A test that measures and records the electrical activity of muscles at the bladder and bowel openings using a needle. |
73 | $74 | $146 |
| Needle measurement of electrical activity in voice box muscles | 48 | $72 | $1,381 |
| 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. |
29 | $40 | $115 |
| Nerve conduction study, 1-2 tests A test that measures how well nerves send electrical signals to evaluate nerve function. |
18 | $46 | $216 |
| EEG monitoring for coma or sleep This procedure measures brain wave activity to monitor patients who are in a coma or asleep. |
16 | $50 | $263 |
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. Parker is a remote monitoring specialist, with above-average Medicare volume (top 14% 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
Is Dr. Parker experienced with continuous intraoperative neurophysiology monitoring, remote?
Does Dr. Parker receive payments from pharmaceutical companies?
How do Dr. Parker's costs compare to other neurologists in Whittier?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology