Medicare Enrolled
Dr. William Larsen, MD
Family Medicine · Charlotte, NC
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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. Larsen 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. Larsen
Dr. William Larsen is a family medicine specialist in Charlotte, NC, with 20 years of NPI registration. Based on federal Medicare data, Dr. Larsen performed 1,164 Medicare services across 882 unique beneficiaries.
Between the years covered by Open Payments, Dr. Larsen received a total of $69,813 from 73 pharmaceutical and/or device companies across 1484 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family medicine. 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. Larsen 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 in practice
▲ Top 24% volume in NC
$69,813 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,164
Medicare services
Top 24% in NC for family medicine
882
Unique beneficiaries
$69
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~58 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 |
|---|---|---|---|
| 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. |
390 | $56 | $162 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
166 | $122 | $162 |
| 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. |
147 | $73 | $221 |
| Quadrivalent influenza vaccine, preservative-free A flu shot containing four strains of the influenza virus, formulated without preservatives, administered in a 0.5 ml dose. |
82 | $22 | $54 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
82 | $29 | $38 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
76 | $1 | $9 |
| Pneumococcal conjugate vaccine (PCV20) An intramuscular injection of the 20-valent pneumococcal conjugate vaccine. It is used to protect against diseases caused by Streptococcus pneumoniae bacteria. |
52 | $282 | $300 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
44 | $29 | $42 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
41 | $21 | $162 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
37 | $38 | $130 |
| Home health plan of care re-certification A physician reviews the patient's status and contacts the home health agency to re-certify the plan of care without the patient being present. |
19 | $31 | $97 |
| Initial preventive physical examination, new Medicare beneficiary A comprehensive preventive health visit for new Medicare beneficiaries during their first 12 months of enrollment. The service is conducted as a face-to-face visit and is limited to preventive care. |
17 | $157 | $258 |
| Transitional care management services, moderate complexity Services provided to coordinate care during the transition from an inpatient or other facility setting back to the community. This includes follow-up and management of a health problem of at least moderate complexity. |
11 | $154 | $230 |
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 ↗$69,813
Total received (2018-2024)
Avg $9,973/year across 7 years
Top 1% in NC for family medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
73
Companies
1,484
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.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$43,324 (62.1%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$20,048 (28.7%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$6,441 (9.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$8,557
2023
$18,013
2022
$8,267
2021
$7,372
2020
$8,939
2019
$16,379
2018
$2,285
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Gilead Sciences, Inc.
$5,464
ViiV Healthcare Company
$549
Lilly USA, LLC
$355
Novo Nordisk Inc
$334
ABBVIE INC.
$323
AstraZeneca Pharmaceuticals LP
$268
PFIZER INC.
$219
Bayer Healthcare Pharmaceuticals Inc.
$108
Sumitomo Pharma America, Inc.
$89
Exact Sciences Corporation
$81
Phathom Pharmaceuticals, Inc.
$71
Neos Therapeutics, LP
$67
Esperion Therapeutics, Inc.
$66
SANOFI-AVENTIS U.S. LLC
$63
Merck Sharp & Dohme LLC
$61
Tolmar, Inc.
$60
Xeris Pharmaceuticals, Inc.
$59
Amgen Inc.
$52
Dexcom, Inc.
$44
Verity Pharmaceuticals Inc.
$33
Theratechnologies Inc.
$27
Takeda Pharmaceuticals U.S.A., Inc.
$25
Astellas Pharma US Inc
$23
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
$20
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$20
Abbott Laboratories
$19
Paratek Pharmaceuticals, Inc.
$16
IDORSIA PHARMACEUTICALS US INC
$14
Kowa Pharmaceuticals America, Inc.
$14
Hikma Pharmaceuticals USA
$13
Top 3 companies account for 74.4% of 2024 payments
All-time payments by company (2018-2024) ›
Gilead Sciences, Inc.
$49,765
Novo Nordisk Inc
$2,222
ViiV Healthcare Company
$1,976
Lilly USA, LLC
$1,642
AstraZeneca Pharmaceuticals LP
$1,621
PFIZER INC.
$1,469
SANOFI-AVENTIS U.S. LLC
$1,225
ABBVIE INC.
$855
Janssen Pharmaceuticals, Inc
$752
Merck Sharp & Dohme Corporation
$680
Amarin Pharma Inc.
$575
Boehringer Ingelheim Pharmaceuticals, Inc.
$533
Takeda Pharmaceuticals U.S.A., Inc.
$520
Amgen Inc.
$456
Kowa Pharmaceuticals America, Inc.
$414
Merck Sharp & Dohme LLC
$361
AbbVie Inc.
$323
Bayer Healthcare Pharmaceuticals Inc.
$295
Novartis Pharmaceuticals Corporation
$293
Biohaven Pharmaceuticals, Inc.
$267
Neos Therapeutics, LP
$250
Biohaven Pharmaceutical Holding Company Ltd.
$209
Xeris Pharmaceuticals, Inc.
$206
Bayer HealthCare Pharmaceuticals Inc.
$205
IDORSIA PHARMACEUTICALS US INC
$191
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$187
GlaxoSmithKline, LLC.
$160
Eisai Inc.
$155
Astellas Pharma US Inc
$135
Sumitomo Pharma America, Inc.
$134
Janssen Biotech, Inc.
$134
Theratechnologies Inc.
$131
Allergan Inc.
$130
Esperion Therapeutics, Inc.
$128
Exact Sciences Corporation
$100
Tolmar, Inc.
$91
Phathom Pharmaceuticals, Inc.
$91
OptiNose US, Inc.
$67
Cranial Technologies, Inc
$60
Aytu BioScience, Inc
$59
Avanir Pharmaceuticals, Inc.
$46
Hologic, LLC
$44
Dexcom, Inc.
$44
Abbott Laboratories
$40
Verity Pharmaceuticals Inc.
$33
Shield Therapeutics Inc
$32
Corcept Therapeutics
$32
E.R. Squibb & Sons, L.L.C.
$32
Paratek Pharmaceuticals, Inc.
$31
Janssen Products, LP
$29
ARBOR PHARMACEUTICALS, INC.
$28
AbbVie, Inc.
$25
Philips Electronics North America Corporation
$25
Antares Pharma, Inc.
$22
Clarus Therapeutics Inc.
$22
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
$20
Upsher-Smith Laboratories LLC
$19
Braintree Laboratories, Inc.
$18
Medtronic, Inc.
$17
Sebela Pharmaceuticals Inc.
$17
Allergan, Inc.
$16
Amneal Pharmaceuticals LLC
$15
Mylan Institutional Inc.
$14
IBSA Pharma Inc.
$14
Bausch Health US, LLC
$14
Teva Pharmaceuticals USA, Inc.
$14
ARALEZ PHARMACEUTICALS US INC.
$13
Hikma Pharmaceuticals USA
$13
EISAI INC.
$13
Genentech USA, Inc.
$11
Promius Pharma LLC
$11
Noden Pharma USA Inc
$11
Sanofi Pasteur Inc.
$11
Top 3 companies account for 77.3% of all-time payments
Associated products mentioned in payments ›
(8876) Vest Therapy Und · ACCRUFER · AIRSUPRA · ANORO ELLIPTA · APRETUDE · APTIMA · ASMANEX · Adzenys XR-ODT · Aimovig · AirDuo Digihaler · Androgel · BASAGLAR · BELSOMRA · BREZTRI · BYSTOLIC · Biktarvy · CABENUVA · CAPLYTA · CHANTIX · COMIRNATY · COTEMPLA XR-ODT · Cimduo · Cologuard Collection Kit · DELSTRIGO · DOVATO · Dayvigo · Descovy · Dexcom G6 Transmitter · Doc Band · EGRIFTA · ELIQUIS · EMGALITY · ENTRESTO · EUCRISA · EVENITY · Edarbi · FARXIGA · FASENRA · FLUZONE HIGH-DOSE · FREESTYLE LIBRE 3 · FreeStyle Libre · GARDASIL · GARDASIL 9 · GEMTESA · GLASSIA · GVOKE HYPOPEN · GVOKE PFS · INVOKANA · ISENTRESS · JANUVIA · JARDIANCE · JATENZO · JULUCA · Kerendia · Korlym · LANTUS · LINZESS · LYRICA · Livalo · MIGRANAL · MOTOFEN · MOUNJARO · MULTAQ · MYRBETRIQ · NEXLETOL · NUEDEXTA · NURTEC ODT · NUVARING · NUZYRA · Natesto · OTREXUP · Otezla · Ozempic · PAXLOVID · PIFELTRO · PNEUMOVAX 23 · PREMARIN · PREVNAR - 13 · PREVNAR 13 · PREVNAR 20 · PREZCOBIX · PREZISTA · Prolia · QULIPTA · QUVIVIQ · RUKOBIA · RYBELSUS · Repatha · Ryaltris · Rybelsus · SHINGRIX · SOLIQUA · SOLIQUA 100/33 · STEGLATRO · STIOLTO RESPIMAT · SYMBICORT · SYMTUZA · SYNTHROID · Saxenda · Symtuza · Synthroid · TEKTURNA · THINPREP 2000 PROCESSOR · TIVICAY · TOSYMRA SUMATRIPTAN NASAL SPRAY · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRINTELLIX · TRIUMEQ · TROGARZO · TRULICITY · TRUMENBA · TZIELD · Tirosint · Tlando · Tresiba · Tretten · Trintellix · Truvada · UBRELVY · UNITHROID · Uloric · VENASEAL · VIAGRA · VOQUEZNA · VRAYLAR · VYVANSE · Vascepa · Veozah · Victoza · Wegovy · XARELTO · XIFAXAN · Xhance · Xofluza · Xultophy 100/3.6 · ZEMBRACE SYMTOUCH · ZONTIVITY · ZORYVE
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 →
The majority of payments (62%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in family medicine and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 1% for family medicine in NC.
Geographic Context
Family medicine physicians within 10 mi
841
Per 100K population
74.4
County median income
$83,765
Nearest hospital
CAROLINAS MEDICAL CENTER/BEHAV HEALTH
7.6 mi
7.6 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. Larsen is a clinical cardiology specialist, with above-average Medicare volume (top 24% in NC), with speaking/promotional industry engagement in the top 1% of NC 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
Is Dr. Larsen experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Larsen performed 390 office visit, established patient (20-29 min) 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. Larsen receive payments from pharmaceutical companies?
Yes. Dr. Larsen received a total of $69,813 from 73 companies across 1,484 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. Larsen's costs compare to other family medicine physicians in Charlotte?
Dr. Larsen's average Medicare payment per service is $69. 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. Larsen) 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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