Medicare Enrolled
Karen Larsen, ARNP
Nurse Practitioner - Family · Ocala, FL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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 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 Larsen
Karen Larsen is a nurse practitioner - family in Ocala, FL, with 13 years of NPI registration. Based on federal Medicare data, Larsen performed 5,538 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Larsen received a total of $2,586 from 20 pharmaceutical and/or device companies across 77 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 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.
✓ 13 years of NPI registration
▲ Top 2% volume in FL
$2,586 industry payments
Florida License Status
FL DOH · MQA2
Active licenses
None
Board action on record
0
Recent admin complaints
| Profession | License # | Status | Expires | Board Action |
|---|---|---|---|---|
| Registered Nurse | 2944842 | Clear | July 31, 2028 | — |
| Advanced Practice Registered Nurse | 2944842 | Clear | July 31, 2028 | — |
Data from Florida Department of Health Medical Quality Assurance.
License records are public under Chapter 119, Florida Statutes.
Verify directly on FL DOH →
Medicare Practice Summary — 2023
Medicare Utilization ↗5,538
Medicare services
Top 2% in FL for nurse practitioner - family
Not available
Unique patients (not deduplicated)
$17
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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
1,500 | $0 | $0 |
| 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. |
341 | $75 | $245 |
| 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. |
302 | $50 | $176 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
292 | $7 | $10 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
272 | $10 | $21 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
270 | $8 | $16 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
249 | $16 | $34 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
227 | $13 | $27 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
226 | $3 | $7 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
187 | $5 | $10 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
185 | $9 | $19 |
| Urine microalbumin test A laboratory test that measures the amount of a specific protein called microalbumin in a urine sample. This analysis helps assess kidney function. |
172 | $6 | $12 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
162 | $9 | $18 |
| Annual depression screening | 136 | $15 | $35 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
101 | $29 | $59 |
| Free T3 thyroid hormone test A blood test that measures the level of free triiodothyronine (T3) hormone in your body. This helps assess how well your thyroid gland is functioning. |
101 | $17 | $34 |
| Parathyroid hormone level test A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones. |
69 | $40 | $83 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
56 | $15 | $30 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
53 | $14 | $29 |
| Urine total protein level A laboratory test that measures the total amount of protein present in a urine sample. |
51 | $4 | $7 |
| Drug screening test A laboratory test that uses a chemistry analyzer to detect the presence of drugs in a sample. |
48 | $61 | $124 |
| Phosphate level test A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong. |
48 | $5 | $9 |
| 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. |
40 | $17 | $64 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
40 | $13 | $27 |
| Iron level test | 40 | $6 | $13 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
40 | $29 | $30 |
| Flu vaccine, quadrivalent A flu shot containing four strains of the influenza virus to help prevent seasonal influenza infection. |
37 | $76 | $143 |
| PSA test (prostate cancer screening) A blood test that measures the level of prostate-specific antigen to screen for prostate cancer. |
33 | $19 | $38 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
32 | $9 | $48 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
31 | $108 | $282 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
30 | $31 | $107 |
| 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. |
24 | $136 | $394 |
| X-ray of lower and sacral spine, 2-3 views An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area. |
23 | $24 | $73 |
| 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. |
19 | $92 | $325 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
17 | $31 | $140 |
| Cystatin C level test A blood test that measures the level of cystatin C, a protein produced by cells in the body. This measurement is used to help assess kidney function. |
16 | $18 | $37 |
| Hip X-ray, 2-3 views An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures. |
15 | $27 | $89 |
| Knee X-ray, 3 views An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures. |
15 | $23 | $63 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
14 | $8 | $35 |
| CT scan of chest, without contrast A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye. |
13 | $72 | $525 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
11 | $33 | $175 |
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 ↗$2,586
Total received (2021-2024)
Avg $646/year across 4 years
Top 12% in FL for nurse practitioner - family
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
20
Companies
77
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
$896
2023
$534
2022
$550
2021
$605
Payments by company (2024)
ABBVIE INC.
$281
Novo Nordisk Inc
$172
Boehringer Ingelheim Pharmaceuticals, Inc.
$124
Exact Sciences Corporation
$85
Phathom Pharmaceuticals, Inc.
$68
Lilly USA, LLC
$66
Lundbeck LLC
$59
GlaxoSmithKline, LLC.
$14
Bayer Healthcare Pharmaceuticals Inc.
$14
Organogenesis Inc.
$13
Top 3 companies account for 64.4% of 2024 payments
All-time payments by company (2021-2024) ›
ABBVIE INC.
$577
Boehringer Ingelheim Pharmaceuticals, Inc.
$470
Novo Nordisk Inc
$345
Biohaven Pharmaceuticals, Inc.
$164
Lilly USA, LLC
$161
AstraZeneca Pharmaceuticals LP
$146
Astellas Pharma US Inc
$120
AbbVie Inc.
$109
Exact Sciences Corporation
$101
Phathom Pharmaceuticals, Inc.
$68
Lundbeck LLC
$59
Edwards Lifesciences Corporation
$55
SANOFI-AVENTIS U.S. LLC
$45
Eisai Inc.
$45
PFIZER INC.
$33
Biohaven Pharmaceutical Holding Company Ltd.
$30
Amgen Inc.
$15
GlaxoSmithKline, LLC.
$14
Bayer Healthcare Pharmaceuticals Inc.
$14
Organogenesis Inc.
$13
Top 3 companies account for 53.8% of all-time payments
Associated products mentioned in payments ›
Aimovig · BREZTRI · CREON · Cologuard Collection Kit · Dayvigo · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · JARDIANCE · Kerendia · MOUNJARO · NURTEC ODT · Ozempic · QULIPTA · Rybelsus · STIOLTO RESPIMAT · TRELEGY ELLIPTA · TZIELD · UBRELVY · VOQUEZNA · VRAYLAR · VYEPTI · Veozah · Wegovy
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 nurse practitioners in nearby ZIP areas
461
County median income
$58,535
Nearest hospital to ZIP centroid (approximate)
MARION COMMUNTIY 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
Larsen is a mixed practice specialist, with above-average Medicare volume (top 2% in FL).
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Larsen experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Larsen performed 1,500 contrast dye for imaging (iodine-based) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Larsen receive payments from pharmaceutical companies?
Yes. Larsen received a total of $2,586 from 20 companies across 77 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 Larsen's costs compare to other family nurse practitioners in Ocala?
Larsen's average Medicare payment per service is $17. 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 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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