Medicare Enrolled
Dr. Charles Knapp, MD
Dermatology · The Villages, 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 Dr. Knapp 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. Knapp
Dr. Charles Knapp is a dermatology specialist in The Villages, FL, with 17 years of NPI registration. Based on federal Medicare data, Dr. Knapp performed 10,200 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Knapp received a total of $5,140 from 33 pharmaceutical and/or device companies across 218 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. Knapp 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.
✓ 17 years of NPI registration
▲ Top 14% volume in FL
$5,140 industry payments
Florida License Status
FL DOH · MQA1
Active license
None
Board action on record
0
Recent admin complaints
| Profession | License # | Status | Expires | Board Action |
|---|---|---|---|---|
| Medical Doctor | 113504 | Clear | January 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 ↗10,200
Medicare services
Top 14% in FL for dermatology
Not available
Unique patients (not deduplicated)
$74
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 |
|---|---|---|---|
| Tissue pathology examination, moderate complexity A laboratory test where a pathologist examines tissue samples under a microscope to analyze cellular details. This intermediate complexity procedure involves specialized techniques to identify abnormalities in the tissue. |
2,920 | $27 | $40 |
| Destruction of precancerous skin growths, 2-14 This procedure involves the removal or destruction of two to fourteen precancerous skin lesions. It is performed to eliminate abnormal skin cells that have the potential to develop into cancer. |
1,252 | $5 | $7 |
| 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. |
810 | $64 | $99 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
498 | $64 | $110 |
| Additional skin growth biopsy Removal of a sample of an additional skin growth for laboratory examination. This code is used for each extra lesion biopsied during the same session. |
483 | $39 | $54 |
| Destruction of precancerous skin growth, 1 Removal of a single precancerous skin growth. This procedure destroys abnormal skin cells to prevent them from developing into cancer. |
477 | $35 | $73 |
| UV therapy with tar or petroleum jelly A treatment using ultraviolet radiation combined with the application of tar or petroleum jelly to the skin. |
473 | $88 | $124 |
| Destruction of skin growths (warts/lesions), 1-14 This procedure involves the removal or destruction of one to fourteen skin growths. It is a minor surgical intervention performed on the skin surface. |
337 | $77 | $122 |
| Tissue staining for diagnosis, initial A laboratory test where special stains are applied to tissue slides to help examine the cells and identify specific characteristics. |
333 | $26 | $37 |
| Skin growth removal and lab exam, 1-5 blocks This procedure involves the removal of a growth from the head, neck, hands, feet, or genitals. The removed tissue is then examined under a microscope in the laboratory. |
284 | $504 | $737 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
261 | $74 | $123 |
| 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. |
226 | $92 | $140 |
| Complicated wound repair, scalp/arms/legs, 2.6-7.5 cm A complex surgical procedure to close a wound on the scalp, arms, or legs that measures between 2.6 and 7.5 centimeters in length. |
203 | $243 | $465 |
| Tissue staining for diagnosis, additional An extra laboratory procedure to apply special stains to tissue slides for detailed examination. |
183 | $22 | $30 |
| Complicated wound repair, 2.6-7.5 cm A complex surgical procedure to close a wound measuring between 2.6 and 7.5 centimeters on areas such as the face, neck, hands, or feet. |
167 | $193 | $516 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 157 | $326 | $446 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
118 | $41 | $62 |
| Skin growth removal and lab exam, 1-5 blocks A procedure to remove a growth from the trunk, arms, or legs and send 1 to 5 tissue samples to a laboratory for microscopic examination. |
108 | $489 | $691 |
| Surgical removal of skin cancer, 1.1-2.0 cm Surgical excision of a cancerous skin growth measuring between 1.1 and 2.0 centimeters on the body, arms, or legs. |
107 | $97 | $267 |
| Destruction of 15 or more precancerous skin growths This procedure involves the removal or destruction of fifteen or more precancerous skin lesions. It is performed to treat abnormal skin cells that have the potential to develop into cancer. |
96 | $122 | $183 |
| Special tissue stain and interpretation A laboratory test using special stains to examine tissue samples, including the pathologist's review and written report of the findings. |
94 | $8 | $13 |
| 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. |
77 | $117 | $183 |
| Pathology tissue examination, moderate complexity A laboratory test where a pathologist examines tissue samples under a microscope to identify abnormalities. This specific level indicates a moderate degree of complexity in the analysis. |
59 | $8 | $12 |
| Ear tissue biopsy A procedure to remove a small sample of tissue from the ear for laboratory examination. |
58 | $46 | $105 |
| Destruction of cancer skin growth, 1.1-2.0 cm Removal of a cancerous skin growth on the trunk, arms, or legs that measures between 1.1 and 2.0 centimeters. |
54 | $109 | $195 |
| Complicated wound repair of trunk, 2.6-7.5 cm A surgical procedure to close a complex wound on the trunk that measures between 2.6 and 7.5 centimeters in length. |
53 | $293 | $434 |
| Additional antibody stain test An additional laboratory test using a single antibody stain to evaluate specific markers. |
52 | $23 | $31 |
| Additional Mohs surgery stage with microscopic exam This procedure involves the removal and microscopic examination of an additional stage of tissue from the trunk, arms, or legs. It is performed in stages to ensure complete removal of the growth. |
45 | $311 | $426 |
| Skin tag removal, 1-15 tags This procedure involves the removal of one to fifteen skin tags. It is a minor surgical intervention to excise these benign growths from the skin. |
31 | $44 | $100 |
| Destruction of cancerous skin growth on face, 1.1-2.0 cm This procedure involves the removal or destruction of a cancerous skin lesion located on the face, ears, eyelids, nose, lips, or mouth. The lesion treated measures between 1.1 and 2.0 centimeters in diameter. |
30 | $147 | $225 |
| Punch biopsy of first skin growth A small, circular piece of skin is removed from a skin growth using a circular blade. The sample is then sent to a laboratory for examination. |
25 | $96 | $136 |
| Surgical removal of skin cancer, 2.1-3.0 cm This procedure involves the surgical excision of a cancerous skin growth located on the body, arms, or legs. The size of the removed tissue measures between 2.1 and 3.0 centimeters. |
23 | $112 | $306 |
| Shaving of skin growth, 1.1-2.0 cm This procedure involves shaving off a skin growth measuring between 1.1 and 2.0 centimeters from the body, arms, or legs. |
19 | $92 | $149 |
| Punch biopsy of additional skin growth A small circular tool is used to remove a sample of an extra skin growth for laboratory examination. |
16 | $47 | $64 |
| Intermediate wound repair, 2.6-7.5 cm A medical procedure to close a wound on the scalp, underarms, trunk, arms, or legs that measures between 2.6 and 7.5 centimeters. This type of repair involves cleaning the wound and stitching it closed to promote healing. |
16 | $165 | $331 |
| Complex repair of eyelid, nose, ear, or lip wound, 2.6-7.5 cm A surgical procedure to repair a complex wound on the eyelid, nose, ear, or lip that measures between 2.6 and 7.5 centimeters. |
16 | $200 | $547 |
| Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm | 16 | $125 | $206 |
| Initial single antibody stain evaluation A laboratory test that uses a single antibody stain to evaluate specific proteins or markers in a sample. |
12 | $28 | $38 |
| Removal of noncancer skin growth, 1.1-2.0 cm This procedure involves the surgical removal of a benign skin growth located on the body, arms, or legs. The growth measured between 1.1 and 2.0 centimeters in diameter. |
11 | $75 | $188 |
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.
0.4% high complexity
10.6% medium
89.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$5,140
Total received (2018-2024)
Avg $734/year across 7 years
Top 30% in FL for dermatology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
33
Companies
218
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
$1,536
2023
$982
2022
$803
2021
$840
2020
$238
2019
$351
2018
$389
Payments by company (2024)
ABBVIE INC.
$348
Regeneron Healthcare Solutions, Inc.
$275
PFIZER INC.
$242
Novartis Pharmaceuticals Corporation
$198
Lilly USA, LLC
$125
E.R. Squibb & Sons, L.L.C.
$68
Elekta, Inc.
$47
SUN PHARMACEUTICAL INDUSTRIES INC.
$37
GENZYME CORPORATION
$36
Dermavant Sciences, Inc.
$35
Galderma Laboratories, L.P.
$33
Boehringer Ingelheim Pharmaceuticals, Inc.
$27
Amgen Inc.
$25
Janssen Biotech, Inc.
$21
Verrica Pharmaceuticals Inc.
$18
Top 3 companies account for 56.3% of 2024 payments
All-time payments by company (2018-2024) ›
Novartis Pharmaceuticals Corporation
$1,145
ABBVIE INC.
$851
Regeneron Healthcare Solutions, Inc.
$630
Amgen Inc.
$337
PFIZER INC.
$292
E.R. Squibb & Sons, L.L.C.
$240
Lilly USA, LLC
$198
AbbVie, Inc.
$180
GENZYME CORPORATION
$165
Smith+Nephew, Inc.
$124
AbbVie Inc.
$95
Dermavant Sciences, Inc.
$93
Boehringer Ingelheim Pharmaceuticals, Inc.
$70
Allergan, Inc.
$63
Galderma Laboratories, L.P.
$63
Janssen Biotech, Inc.
$57
UCB, Inc.
$53
SUN PHARMACEUTICAL INDUSTRIES INC.
$52
Elekta, Inc.
$47
Celgene Corporation
$43
Biofrontera Inc.
$40
Sebela Pharmaceuticals Inc.
$40
Sun Pharmaceutical Industries Inc.
$37
Helsinn Therapeutics (U.S.), Inc.
$36
ORGANOGENESIS INC.
$33
DUSA Pharmaceuticals, Inc.
$27
Incyte Corporation
$20
Novum Pharma, LLC
$20
VYNE Pharmaceuticals Inc.
$19
Mission Pharmacal Company
$18
Genentech USA, Inc.
$18
Verrica Pharmaceuticals Inc.
$18
Arcutis Biotherapeutics, Inc.
$16
Top 3 companies account for 51.1% of all-time payments
Associated products mentioned in payments ›
AKLIEF · AMELUZ · AMZEEQ · Alcortin A · Ameluz · Avar · BOTOX COSMETIC · CIBINQO · COLLAGENASE SANTYL · COSENTYX · Cimzia · DUPIXENT · ELEKTA MEDICAL LINEAR ACCELERATOR · EUCRISA · Enbrel · Erivedge · HUMIRA · Humira · ILUMYA · Ilumya · LEVULAN KERASTICK · LIBTAYO · NAFTIN · ODOMZO · OPZELURA · Otezla · Puraply · REMICADE · RINVOQ · SKYRIZI · SPEVIGO · Santyl · Skyrizi · Sotyktu · TALTZ · TREMFYA · Tremfya · VALCHLOR · VTAMA · YCANTH
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
Dermatologists in nearby ZIP areas
22
County median income
$73,297
Nearest hospital to ZIP centroid (approximate)
UF HEALTH LEESBURG HOSPITAL
6.4 mi
6.4 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. Knapp is a mixed practice specialist, with above-average Medicare volume (top 14% in FL), with 17 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. Knapp experienced with tissue pathology examination, moderate complexity?
Based on Medicare claims data, Dr. Knapp performed 2,920 tissue pathology examination, moderate complexity 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. Knapp receive payments from pharmaceutical companies?
Yes. Dr. Knapp received a total of $5,140 from 33 companies across 218 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. Knapp's costs compare to other dermatologists in The Villages?
Dr. Knapp's average Medicare payment per service is $74. 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. Knapp) 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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