Medicare Enrolled
Dr. Katherine Mercy, MD
MOHS-Micrographic Surgery Physician · Naperville, IL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Mercy 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. Mercy
Dr. Katherine Mercy is a mohs-micrographic surgery physician in Naperville, IL, with 17 years of NPI registration. Based on federal Medicare data, Dr. Mercy performed 1,107 Medicare services across 942 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mercy received a total of $365 from 12 pharmaceutical and/or device companies across 18 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in mohs-micrographic surgery physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Mercy 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 in practice
▲ 1,107 Medicare services
$365 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,107
Medicare services
Bottom 10% in IL for mohs-micrographic surgery physician
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
942
Unique beneficiaries
$308
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~65 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 |
|---|---|---|---|
| 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. |
334 | $484 | $2,929 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 145 | $345 | $1,781 |
| Intermediate repair of wound of face, ears, eyelids, nose, lips, or mouth, 2.6-5.0 cm | 71 | $139 | $1,046 |
| 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. |
69 | $44 | $148 |
| 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. |
63 | $169 | $1,002 |
| 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. |
39 | $485 | $2,692 |
| 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. |
38 | $71 | $263 |
| 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. |
37 | $32 | $304 |
| 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. |
36 | $196 | $2,439 |
| 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. |
33 | $6 | $84 |
| Intermediate wound repair, 2.6-7.5 cm This procedure involves stitching a wound on the neck, hands, feet, or genitals that measures between 2.6 and 7.5 centimeters. It is classified as an intermediate repair requiring layered closure. |
29 | $131 | $920 |
| 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. |
28 | $187 | $1,650 |
| Intermediate wound repair, face or mouth, 2.5 cm or less A medical procedure to close a wound on the face, ears, eyelids, nose, lips, or mouth that is 2.5 centimeters or smaller. This type of repair involves more than simple closure but is less complex than a major repair. |
27 | $136 | $920 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
22 | $49 | $378 |
| 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. |
17 | $104 | $936 |
| 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 | $211 | $3,039 |
| 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. |
15 | $126 | $1,062 |
| Skin graft repair of eyelid, nose, ear, or lip, 10 sq cm or less A surgical procedure to repair a wound on the eyelid, nose, ear, or lip by transferring a small piece of skin. The transferred skin covers an area of 10 square centimeters or less. |
14 | $586 | $3,757 |
| Skin graft repair of eyelid, nose, ear, or lip, 10.1-30 sq cm This procedure involves repairing a wound on the eyelid, nose, ear, or lip by transferring skin from another area. The graft size covered is between 10.1 and 30.0 square centimeters. |
14 | $829 | $5,110 |
| Skin graft repair, 30.1-60.0 sq cm A surgical procedure to repair a wound by transferring skin from one area to another. This code applies to grafts covering an area between 30.1 and 60.0 square centimeters. |
13 | $916 | $5,560 |
| Intermediate wound repair, 7.6-12.5 cm This procedure involves stitching a wound on the scalp, underarms, trunk, arms, or legs that measures between 7.6 and 12.5 centimeters. It includes cleaning the wound and closing it with sutures to promote healing. |
12 | $213 | $941 |
| Skin graft repair, 10.1-30 sq cm A surgical procedure to repair wounds on the forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet by transferring skin. The graft covers an area between 10.1 and 30.0 square centimeters. |
12 | $717 | $4,508 |
| 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. |
12 | $333 | $1,663 |
| Full thickness skin graft to nose, ears, eyelids, or lips, 20 sq cm or less A surgical procedure where a full layer of skin is taken from a donor site and transplanted to the nose, ears, eyelids, or lips. The graft covers an area of 20 square centimeters or less. |
11 | $747 | $4,230 |
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.
1.1% high complexity
2.0% medium
96.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$365
Total received (2018-2024)
Avg $73/year across 5 years
Bottom 19% in IL for mohs-micrographic surgery physician
12
Companies
18
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.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$332 (91.1%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$32 (8.9%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$146
2023
$60
2022
$29
2021
$61
2018
$68
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
GENZYME CORPORATION
$35
Janssen Biotech, Inc.
$31
Lilly USA, LLC
$25
Dermavant Sciences, Inc.
$24
SUN PHARMACEUTICAL INDUSTRIES INC.
$16
PFIZER INC.
$16
Top 3 companies account for 62.1% of 2024 payments
All-time payments by company (2018-2024) ›
SUN PHARMACEUTICAL INDUSTRIES INC.
$63
AbbVie, Inc.
$36
Sun Pharmaceutical Industries Inc.
$36
GENZYME CORPORATION
$35
Galderma Laboratories, L.P.
$32
Janssen Biotech, Inc.
$31
Regeneron Healthcare Solutions, Inc.
$29
Lilly USA, LLC
$25
Incyte Corporation
$24
Dermavant Sciences, Inc.
$24
PFIZER INC.
$16
Genentech USA, Inc.
$14
Top 3 companies account for 37.0% of all-time payments
Associated products mentioned in payments ›
BLU-U · DUPIXENT · Erivedge · Humira · ILUMYA · LITFULO · OPZELURA · TALTZ · TREMFYA · VTAMA · Winlevi
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 →
Most payments (91%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Mohs-micrographic surgery physicians within 10 mi
10
Per 100K population
1.1
County median income
$110,502
Nearest hospital
COPLEY MEMORIAL HOSPITAL
3.6 mi
3.6 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. Mercy is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, 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. Mercy experienced with skin growth removal and lab exam, 1-5 blocks?
Based on Medicare claims data, Dr. Mercy performed 334 skin growth removal and lab exam, 1-5 blocks 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. Mercy receive payments from pharmaceutical companies?
Yes. Dr. Mercy received a total of $365 from 12 companies across 18 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. Mercy's costs compare to other mohs-micrographic surgery physicians in Naperville?
Dr. Mercy's average Medicare payment per service is $308. 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. Mercy) 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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