Medicare Enrolled
Dr. Amy Nielsen, D.O.
Clinical Neurophysiology Physician · La Jolla, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Nielsen from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Nielsen
Dr. Amy Nielsen is a clinical neurophysiology physician in La Jolla, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Nielsen performed 21,169 Medicare services across 660 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nielsen received a total of $24,100 from 89 pharmaceutical and/or device companies across 1130 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in clinical neurophysiology physician. 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. Nielsen 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.
✓ 19 years in practice
▲ Top 5% volume in CA
$24,100 industry payments
Medicare Practice Summary
Medicare Utilization ↗21,169
Medicare services
Top 5% in CA for clinical neurophysiology physician
660
Unique beneficiaries
$9
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,114 Medicare services per year of practice
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. |
20,200 | $5 | $12 |
| 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. |
222 | $98 | $267 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
218 | $48 | $131 |
| New patient office visit, complex (60-74 min) | 112 | $161 | $455 |
| Bilateral facial and neck nerve muscle paralysis injection Injection of a chemical agent to paralyze muscles in the face and neck on both sides. |
102 | $126 | $350 |
| 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. |
93 | $133 | $374 |
| 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. |
76 | $87 | $219 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
40 | $63 | $189 |
| Prolonged office E/M service, first 15 minutes This code is used for additional time spent by a physician beyond the maximum required time of a primary office or outpatient evaluation and management service. It is billed in 15-minute increments based on total time spent on the date of the primary service. |
24 | $25 | $64 |
| 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. |
23 | $129 | $345 |
| 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. |
19 | $115 | $295 |
| 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. |
17 | $154 | $386 |
| 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. |
12 | $186 | $464 |
| EEG, extended monitoring A test that records electrical activity in the brain while the patient is both awake and asleep. |
11 | $393 | $1,003 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$24,100
Total received (2018-2024)
Avg $3,443/year across 7 years
Top 11% in CA for clinical neurophysiology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
89
Companies
1,130
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$19,880 (82.5%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$4,177 (17.3%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$43 (0.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,640
2023
$2,051
2022
$2,612
2021
$3,607
2020
$2,142
2019
$3,662
2018
$6,387
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
UCB, Inc.
$578
ABBVIE INC.
$518
Lundbeck LLC
$364
Novartis Pharmaceuticals Corporation
$242
Teva Pharmaceuticals USA, Inc.
$206
Lilly USA, LLC
$175
SK Life Science, Inc.
$153
Biogen, Inc.
$142
Neurelis, Inc.
$115
ACADIA Pharmaceuticals Inc
$115
Takeda Pharmaceuticals U.S.A., Inc.
$114
EMD Serono, Inc.
$112
PFIZER INC.
$106
CSL Behring
$82
Eisai Inc.
$62
Grifols USA, LLC
$59
Genentech USA, Inc.
$52
Vanda Pharmaceuticals Inc.
$49
Azurity Pharmaceuticals, Inc.
$44
Janssen Scientific Affairs, LLC
$41
SPR Therapeutics, Inc
$39
Averitas Pharma Inc.
$32
JAZZ PHARMACEUTICALS INC.
$29
Amneal Pharmaceuticals LLC
$29
Alnylam Pharmaceuticals Inc.
$27
Octapharma USA, Inc.
$25
ARGENX US, INC.
$24
MITSUBISHI TANABE PHARMA AMERICA, INC.
$23
Abbott Laboratories
$23
Ipsen Biopharmaceuticals, Inc
$22
Philips North America LLC
$19
SCILEX PHARMACEUTICALS INC.
$18
Top 3 companies account for 40.1% of 2024 payments
All-time payments by company (2018-2024) ›
Promius Pharma LLC
$4,263
Biogen, Inc.
$1,806
Novartis Pharmaceuticals Corporation
$1,789
ABBVIE INC.
$1,361
UCB, Inc.
$1,325
Amgen Inc.
$1,050
Sunovion Pharmaceuticals Inc.
$1,026
Lilly USA, LLC
$1,000
EMD Serono, Inc.
$982
Teva Pharmaceuticals USA, Inc.
$736
Lundbeck LLC
$673
Upsher-Smith Laboratories LLC
$499
Allergan, Inc.
$492
AbbVie Inc.
$458
Genentech USA, Inc.
$416
Zyla Life Sciences
$358
UPSHER-SMITH LABORATORIES LLC
$342
GENZYME CORPORATION
$305
Horizon Therapeutics plc
$274
Eisai Inc.
$249
SK Life Science, Inc.
$223
Allergan Inc.
$207
Egalet US Inc
$202
GE HEALTHCARE
$201
Alexion Pharmaceuticals, Inc.
$195
PFIZER INC.
$187
Neurelis, Inc.
$185
Alnylam Pharmaceuticals Inc.
$180
Biohaven Pharmaceutical Holding Company Ltd.
$164
Supernus Pharmaceuticals, Inc.
$147
Biohaven Pharmaceuticals, Inc.
$137
CSL Behring
$134
IMPEL PHARMACEUTICALS INC.
$134
ACADIA Pharmaceuticals Inc
$115
Takeda Pharmaceuticals U.S.A., Inc.
$114
SPR Therapeutics, Inc
$105
Zyla Life Sciences, Inc.
$97
Grifols USA, LLC
$97
Assertio Therapeutics, Inc.
$95
Vanda Pharmaceuticals Inc.
$92
BANNER LIFE SCIENCES, LLC
$88
Amneal Pharmaceuticals LLC
$86
Azurity Pharmaceuticals, Inc.
$83
Janssen Pharmaceuticals, Inc
$76
Boston Scientific Corporation
$75
Abbott Laboratories
$74
Medtronic Vascular, Inc.
$58
Mallinckrodt Hospital Products Inc.
$57
MITSUBISHI TANABE PHARMA AMERICA, INC.
$56
JAZZ PHARMACEUTICALS INC.
$47
Bausch Health US, LLC
$43
Acorda Therapeutics, Inc
$43
Janssen Scientific Affairs, LLC
$41
Ipsen Biopharmaceuticals, Inc
$40
SANOFI-AVENTIS U.S. LLC
$39
Mallinckrodt Enterprises LLC
$36
Corium, LLC
$36
TerSera Therapeutics LLC
$34
Impax Laboratories, Inc.
$34
AstraZeneca Pharmaceuticals LP
$34
Medtronic, Inc.
$34
Averitas Pharma Inc.
$32
GE HealthCare
$31
Sumitomo Pharma America, Inc.
$26
Otsuka America Pharmaceutical, Inc.
$26
Octapharma USA, Inc.
$25
W. L. Gore & Associates, Inc.
$25
Celgene Corporation
$25
ARGENX US, INC.
$24
SI-BONE, Inc.
$23
PORTOLA PHARMACEUTICALS, LLC
$23
Banner Life Sciences, LLC
$21
LivaNova USA, Inc.
$20
Shire North American Group Inc
$20
Axsome Therapeutics, Inc.
$19
Scilex Pharmaceuticals Inc.
$19
Philips North America LLC
$19
E.R. Squibb & Sons, L.L.C.
$19
Greenwich Biosciences, Inc.
$19
SCILEX PHARMACEUTICALS INC.
$18
Neurocrine Biosciences, Inc.
$17
Medtronic USA, Inc.
$17
CATALYST PHARMACEUTICALS, INC.
$17
ARBOR PHARMACEUTICALS, INC.
$16
Arbor Pharmaceuticals, Inc.
$15
Mylan Pharmaceuticals Inc.
$15
Avanir Pharmaceuticals, Inc.
$15
EISAI INC.
$14
Jazz Pharmaceuticals Inc.
$14
Top 3 companies account for 32.6% of all-time payments
Associated products mentioned in payments ›
(CK4) MCOT · ACTHAR · ADUHELM · AFINITOR · AIMOVIG · AJOVY · AMPYRA · AMVUTTRA · AMYVID · ANDEXXA · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Adlarity · Aimovig · Austedo XR · BAFIERTAM · BEOVU · BOTOX · BOTOX THERAPEUTIC · BRILINTA · Briviact · CAMBIA · CARDIOFORM Septal Occluder · COPAXONE · Cambia · Confirm Rx · Dysport · EMGALITY · EPIDIOLEX · Epidiolex · Eprontia · FIRDAPSE · Fintepla · Fycompa · GAMMAGARD · GILENYA · Gamunex-C · Glatiramer Acetate · HETLIOZ · HORIZANT · HYQVIA · Hizentra · Horizant · INBRIJA · INGREZZA · INTELLIS · KESIMPTA · KISUNLA · KYNMOBI · LEMTRADA · Leqembi · MAVENCLAD · MAYZENT · MIGRANAL · Mavenclad · NUPLAZID · NURTEC ODT · Nayzilam · OCREVUS · OCTRODE · ONPATTRO · ONZETRA Xsail · OXAYDO · Ocrevus · Ocrevus Zunovo · PANZYGA · PONVORY · PRIALT · Ponvory · Proclaim Family of SCS IPGs · QALSODY · QUDEXY XR Topiramate Extended Release Capsules · QULIPTA · QUTENZA · RADICAVA · REXULTI · RYTARY · Rebif · Reveal LINQ · Rystiggo · SOLIRIS · SPRINT PNS System · SPRIX · Sunosi · TECFIDERA · TOSYMRA · TOSYMRA SUMATRIPTAN NASAL SPRAY · TROKENDI XR · TYSABRI · Tosymra Sumatriptan Nasal Spray · Trudhesa · UBRELVY · UPLIZNA · VALTOCO · VERCISE · VNS Therapy · VUMERITY · VYEPTI · VYVGART HYTRULO · Vanta · Vimpat · WATCHMAN Access System · XARELTO · XYREM · Xyrem · ZAVZPRET · ZEMBRACE SYMTOUCH · ZEMBRACE SYMTOUCH SUMATRIPTAN INJECTION · ZEPOSIA · ZOMIG · ZORVOLEX · ZTLido · Zembrace · Zembrace SymTouch Sumatriptan Injection · Zilbrysq
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (82%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Clinical neurophysiology physicians within 10 mi
5
Per 100K population
0.2
County median income
$102,285
Nearest hospital
SCRIPPS MEMORIAL HOSPITAL LA JOLLA
0.0 mi
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. Nielsen is a mixed practice specialist, with above-average Medicare volume (top 5% in CA), with low-engagement industry engagement in the top 11% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Nielsen experienced with botox injection, per unit?
Based on Medicare claims data, Dr. Nielsen performed 20,200 botox injection, per unit services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Nielsen receive payments from pharmaceutical companies?
Yes. Dr. Nielsen received a total of $24,100 from 89 companies across 1,130 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Nielsen's costs compare to other clinical neurophysiology physicians in La Jolla?
Dr. Nielsen's average Medicare payment per service is $9. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Nielsen) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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