Medicare Enrolled
Dr. Preston Harrison, M.D.
Neurology · Tyler, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Harrison 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. Harrison
Dr. Preston Harrison is a neurology specialist in Tyler, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Harrison performed 991 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Harrison received a total of $19,671 from 73 pharmaceutical and/or device companies across 1057 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Harrison 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.
✓ 20 years of NPI registration
▲ Top 31% volume in TX
$19,671 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗991
Medicare services
Top 31% in TX for neurology
Not available
Unique patients (not deduplicated)
$100
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| 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. |
303 | $73 | $113 |
| 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. |
139 | $112 | $169 |
| 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. |
118 | $71 | $99 |
| EEG, extended monitoring A test that records electrical activity in the brain while the patient is both awake and asleep. |
109 | $312 | $424 |
| Complete ultrasound of brain blood flow An ultrasound test that evaluates blood flow within the brain's blood vessels. It uses sound waves to create images of the vessels and assess circulation. |
97 | $35 | $50 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
96 | $29 | $41 |
| Ultrasound of brain blood flow An ultrasound test used to examine blood flow within the brain to check for blood clots. |
58 | $45 | $60 |
| 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. |
56 | $162 | $238 |
| 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. |
15 | $98 | $143 |
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. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$19,671
Total received (2018-2024)
Avg $2,810/year across 7 years
Top 16% in TX for neurology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
73
Companies
1,057
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,073
2023
$2,981
2022
$3,164
2021
$3,467
2020
$2,243
2019
$2,686
2018
$2,058
Payments by company (2024)
Neurocrine Biosciences, Inc.
$657
Biogen, Inc.
$305
Teva Pharmaceuticals USA, Inc.
$224
Novartis Pharmaceuticals Corporation
$222
EMD Serono, Inc.
$220
Lundbeck LLC
$185
PFIZER INC.
$138
HARMONY BIOSCIENCES LLC
$127
MDD US Operations, LLC
$116
ABBVIE INC.
$109
Celgene Corporation
$106
SK Life Science, Inc.
$103
Genentech USA, Inc.
$102
Sumitomo Pharma America, Inc.
$83
Takeda Pharmaceuticals U.S.A., Inc.
$68
Alexion Pharmaceuticals, Inc.
$60
Amneal Pharmaceuticals LLC
$56
Grifols USA, LLC
$52
LivaNova USA, Inc.
$50
MITSUBISHI TANABE PHARMA AMERICA, INC.
$45
CSL Behring
$16
Abbott Laboratories
$15
HOSPIRA, INC.
$15
Top 3 companies account for 38.6% of 2024 payments
All-time payments by company (2018-2024) ›
Neurocrine Biosciences, Inc.
$2,175
Novartis Pharmaceuticals Corporation
$1,756
Biogen, Inc.
$1,515
Teva Pharmaceuticals USA, Inc.
$1,309
GENZYME CORPORATION
$804
EMD Serono, Inc.
$779
ACADIA Pharmaceuticals Inc
$744
Amgen Inc.
$696
SK Life Science, Inc.
$683
Lundbeck LLC
$624
Alexion Pharmaceuticals, Inc.
$557
ABBVIE INC.
$537
UCB, Inc.
$478
Acorda Therapeutics, Inc
$448
Genentech USA, Inc.
$392
Supernus Pharmaceuticals, Inc.
$390
PFIZER INC.
$352
Amneal Pharmaceuticals LLC
$343
AbbVie Inc.
$330
Lilly USA, LLC
$324
LivaNova USA, Inc.
$302
Adamas Pharmaceuticals, Inc.
$248
Grifols USA, LLC
$244
MITSUBISHI TANABE PHARMA AMERICA, INC.
$242
Harmony Biosciences LLC
$226
Celgene Corporation
$201
Sunovion Pharmaceuticals Inc.
$188
Avanir Pharmaceuticals, Inc.
$177
Avion Pharmaceuticals
$173
Allergan, Inc.
$167
Sumitomo Pharma America, Inc.
$154
Upsher-Smith Laboratories LLC
$148
ARGENX US, INC.
$145
HARMONY BIOSCIENCES LLC
$138
MDD US Operations, LLC
$137
E.R. Squibb & Sons, L.L.C.
$135
Takeda Pharmaceuticals U.S.A., Inc.
$134
Currax Pharmaceuticals LLC
$110
CSL Behring
$109
Biohaven Pharmaceutical Holding Company Ltd.
$87
Corium, LLC
$74
Biohaven Pharmaceuticals, Inc.
$70
Assertio Therapeutics, Inc.
$67
AbbVie, Inc.
$59
Allergan Inc.
$53
Kedrion Biopharma Inc.
$51
Eisai Inc.
$46
Mallinckrodt Enterprises LLC
$45
GE Healthcare
$42
Mitsubishi Tanabe Pharma America, Inc.
$41
Bayer HealthCare Pharmaceuticals Inc.
$31
Abbott Laboratories
$29
Boston Scientific Corporation
$27
UPSHER-SMITH LABORATORIES LLC
$26
Kyowa Kirin, Inc.
$24
Nevro Corp.
$21
Alnylam Pharmaceuticals Inc.
$20
GE HealthCare
$20
Greenwich Biosciences, Inc.
$19
AstraZeneca Pharmaceuticals LP
$18
JAZZ PHARMACEUTICALS INC.
$18
Impax Laboratories, Inc.
$17
GE HEALTHCARE
$16
Horizon Therapeutics plc
$16
AQUESTIVE THERAPEUTICS, INC.
$15
SANOFI-AVENTIS U.S. LLC
$15
HOSPIRA, INC.
$15
Merck Sharp & Dohme Corporation
$14
Jazz Pharmaceuticals Inc.
$14
Purdue Pharma L.P.
$13
Neurelis, Inc.
$11
Promius Pharma LLC
$11
Life Molecular Imaging Ltd
$11
Top 3 companies account for 27.7% of all-time payments
Associated products mentioned in payments ›
ACTHAR · ADUHELM · AIMOVIG · AJOVY · AMPYRA · APOKYN · APTIOM · AUBAGIO · AUSTEDO · AVONEX · Adlarity · Aimovig · Austedo XR · BELSOMRA · BOTOX · BRILINTA · Betaseron · Briviact · CAMBIA · CONTRAVE · COPAXONE · Cambia · Dhivy · Duopa · EMGALITY · Enspryng · Epidiolex · Fycompa · GAMMAGARD · GILENYA · GOCOVRI · Gammaked · Gamunex-C · Gocovri · Gralise · HYQVIA · Hizentra · INBRIJA · INFINITY · INGREZZA · KESIMPTA · LEMTRADA · LUMIZYME · LYRICA · Leqembi · MAVENCLAD · MAYZENT · Mavenclad · NEURACEQ · NORTHERA · NOURIANZ · NUEDEXTA · NUPLAZID · NURTEC ODT · Nuedexta · OCREVUS · OCTAGAM IMMUNE GLOBULIN (HUMAN) · ONFI · ONGENTYS · ONPATTRO · OXTELLAR XR · Ocrevus · Ongentys · PLUVICTO · POMPE - DISEASE · Proclaim IPG · QUDEXY XR Topiramate Extended Release Capsules · QULIPTA · RADICAVA · REXULTI · RYTARY · Radicava · Rebif · SOLIRIS · SPINRAZA · SUNOSI · SYMPAZAN · SYMPROIC · Senza · Soliris · TECFIDERA · TOSYMRA · TOSYMRA SUMATRIPTAN NASAL SPRAY · TROKENDI XR · TYSABRI · UBRELVY · ULTOMIRIS · UPLIZNA · VALTOCO · VNS - Sentiva · VNS THERAPY SENTIVA MODEL 1000 GENERATOR · VNS Therapy · VNS Therapy SenTiva Model 1000 Generator · VUMERITY · VYEPTI · VYVGART · Vercise · Vimpat · WAKIX · Wakix · Xembify · Xyrem · ZEPOSIA · Zembrace · Zembrace SymTouch Sumatriptan Injection
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Neurologists in nearby ZIP areas
24
County median income
$71,923
Nearest hospital to ZIP centroid (approximate)
UT HEALTH EAST TEXAS TYLER REGIONAL HOSPITAL
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Harrison is a clinical cardiology specialist, with moderate Medicare volume, 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
Is Dr. Harrison experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Harrison performed 303 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Harrison receive payments from pharmaceutical companies?
Yes. Dr. Harrison received a total of $19,671 from 73 companies across 1,057 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Harrison's costs compare to other neurologists in Tyler?
Dr. Harrison's average Medicare payment per service is $100. 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. Harrison) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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