Medicare Enrolled
Dr. William Larsen, MD
Family Medicine · Charlotte, NC
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. 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 in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Larsen received a total of $69,813 from 73 pharmaceutical and/or device companies across 1484 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. 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 of NPI registration
▲ Top 24% volume in NC
$69,813 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗1,164
Medicare services
Top 24% in NC for family medicine
Not available
Unique patients (not deduplicated)
$69
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 (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. These counts do not measure clinical quality or years of experience.
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
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
$8,557
2023
$18,013
2022
$8,267
2021
$7,372
2020
$8,939
2019
$16,379
2018
$2,285
Payments by company (2024)
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? 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
Family medicine physicians in nearby ZIP areas
841
County median income
$83,765
Nearest hospital to ZIP centroid (approximate)
CAROLINAS MEDICAL CENTER/BEHAV HEALTH
7.6 mi
7.6 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. Larsen is a clinical cardiology specialist, with above-average Medicare volume (top 24% in NC), 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. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Larsen receive payments from pharmaceutical companies?
Yes. Dr. Larsen received a total of $69,813 from 73 companies across 1,484 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. 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 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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