Medicare Enrolled
Dr. Mark Berk, M.D.
Dermatology · Lake Forest, IL
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. Berk 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 →
Are you Dr. Berk?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Berk
Dr. Mark Berk is a dermatology specialist in Lake Forest, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Berk performed 6,646 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Berk received a total of $6,007 from 35 pharmaceutical and/or device companies across 190 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. Berk 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 16% volume in IL
$6,007 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗6,646
Medicare services
Top 16% in IL for dermatology
Not available
Unique patients (not deduplicated)
$59
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. |
1,679 | $65 | $170 |
| 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. |
1,212 | $5 | $12 |
| 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. |
677 | $76 | $215 |
| 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. |
633 | $37 | $124 |
| 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. |
354 | $96 | $242 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
294 | $1 | $5 |
| 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. |
277 | $83 | $211 |
| Shaving of skin growth, 0.6-1.0 cm A minor procedure to shave off a skin growth on the body, arms, or legs that measures between 0.6 and 1.0 centimeters. |
188 | $75 | $237 |
| 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. |
187 | $97 | $270 |
| Shaving of skin growth on face, 0.6-1.0 cm This procedure involves shaving off a skin growth located on the face, ears, eyelids, nose, lips, or mouth. The size of the growth being removed is between 0.6 and 1.0 centimeters. |
100 | $102 | $267 |
| 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. |
98 | $42 | $105 |
| 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. |
95 | $11 | $40 |
| Shaving of skin growth, 1.1-2.0 cm Removal of a skin growth by shaving the surface of the skin. The procedure is performed on the face, ears, eyelids, nose, lips, or mouth and involves a lesion measuring between 1.1 and 2.0 centimeters. |
94 | $125 | $304 |
| 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. |
90 | $99 | $247 |
| Shaving of skin growth, 0.6-1.0 cm A minor procedure to shave off a skin growth measuring 0.6 to 1.0 cm from the scalp, neck, hands, feet, or genitals. |
86 | $88 | $238 |
| 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. |
75 | $123 | $315 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
74 | $68 | $196 |
| Shaving of skin growth, 1.1-2.0 cm Removal of a skin growth by shaving the surface. The procedure is performed on the scalp, neck, hands, feet, or genitals and involves a lesion measuring between 1.1 and 2.0 centimeters. |
48 | $105 | $275 |
| 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. |
43 | $135 | $338 |
| Destruction of cancerous skin growth, 2.1-3.0 cm This procedure involves the removal or destruction of a cancerous skin lesion measuring between 2.1 and 3.0 centimeters located on the trunk, arms, or legs. |
42 | $158 | $365 |
| Acne surgery A surgical procedure to treat acne. The specific techniques and extent of the surgery are not defined in this general code description. |
37 | $84 | $221 |
| Shaving of skin growth, more than 2.0 cm Removal of a skin growth by shaving the surface with a blade. This procedure is performed on the body, arms, or legs when the growth exceeds 2.0 centimeters. |
35 | $107 | $297 |
| 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. |
34 | $46 | $170 |
| Injection into skin growths, 1-7 A procedure involving the injection of medication into one to seven skin growths. |
21 | $37 | $107 |
| Topical aminolevulinic acid HCl 20% solution A topical medication applied to the skin for medical treatment. It is supplied as a single-unit dosage form containing 354 mg of the active ingredient. |
20 | $307 | $687 |
| Shaving of small skin growth on face or mouth area A minor procedure to shave off a small skin growth, measuring 0.5 cm or less, located on the face, ears, eyelids, nose, lips, or mouth. |
18 | $71 | $226 |
| Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 2.1-3.0 cm | 16 | $171 | $398 |
| Skin growth biopsy, first lesion A minor surgical procedure to remove a small sample of tissue from a skin growth for laboratory examination. |
15 | $122 | $302 |
| Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm | 15 | $131 | $357 |
| 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. |
14 | $42 | $100 |
| Light application with debridement to destroy precancerous skin growth This procedure involves applying light to the skin along with debridement to destroy precancerous skin growths. |
14 | $235 | $547 |
| 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. |
13 | $207 | $586 |
| Shaving of skin growth on face or mouth, larger than 2.0 cm This procedure involves shaving off a skin growth located on the face, ears, eyelids, nose, lips, or mouth. The growth being removed is larger than 2.0 centimeters in size. |
12 | $138 | $352 |
| Destruction of skin growth, 15 or more growths | 12 | $97 | $252 |
| Destruction of cancerous skin growth on face, 2.1-3.0 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 2.1 and 3.0 centimeters in diameter. |
12 | $200 | $462 |
| New patient office visit, 15-29 minutes An initial office visit for a new patient lasting 15 to 29 minutes. This code is used when the total time spent on the date of the encounter meets this duration threshold. |
12 | $46 | $137 |
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.
0.6% high complexity
9.1% medium
90.4% routine
Industry Payment Transparency
Open Payments through 2024 ↗$6,007
Total received (2018-2024)
Avg $858/year across 7 years
Top 29% in IL for dermatology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
35
Companies
190
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
$267
2023
$873
2022
$587
2021
$255
2020
$524
2019
$1,759
2018
$1,742
Payments by company (2024)
Janssen Biotech, Inc.
$172
ABBVIE INC.
$31
E.R. Squibb & Sons, L.L.C.
$27
Incyte Corporation
$20
STRATA Skin Sciences, Inc.
$18
Top 3 companies account for 86.0% of 2024 payments
All-time payments by company (2018-2024) ›
Merz North America, Inc.
$2,140
Janssen Biotech, Inc.
$662
AbbVie, Inc.
$403
PFIZER INC.
$360
MERZ NORTH AMERICA, INC.
$275
Amgen Inc.
$269
Regeneron Healthcare Solutions, Inc.
$251
ABBVIE INC.
$245
UCB, Inc.
$179
Journey Medical Corporation
$142
Galderma Laboratories, L.P.
$124
AbbVie Inc.
$120
Novartis Pharmaceuticals Corporation
$105
Celgene Corporation
$79
Mayne Pharma Inc.
$70
Ortho Dermatologics, a division of Bausch Health US, LLC
$69
Sun Pharmaceutical Industries Inc.
$54
E.R. Squibb & Sons, L.L.C.
$51
GENZYME CORPORATION
$48
Mylan Pharmaceuticals Inc.
$43
Genentech USA, Inc.
$37
EPI Health, LLC
$30
Mission Pharmacal Company
$28
Sebela Pharmaceuticals Inc.
$26
Encore Dermatology Inc.
$25
Incyte Corporation
$20
Bayer HealthCare Pharmaceuticals Inc.
$19
Osiris Therapeutics Inc.
$19
MAYNE PHARMA INC.
$18
Promius Pharma LLC
$18
STRATA Skin Sciences, Inc.
$18
Allergan Inc.
$16
Sensus Healthcare, Inc.
$16
Smith+Nephew, Inc.
$15
Avion Pharmaceuticals
$12
Top 3 companies account for 53.3% of all-time payments
Associated products mentioned in payments ›
ABSORICA · ABSORICA LD · Avar · BRYHALI · Balcoltra · Bensal HP · CLODERM · COSENTYX · Cimzia · DORYX · DUPIXENT · DUPIXENT DUPILUMAB INJECTION · EPIDUO FORTE · EUCRISA · Enbrel · Erivedge · Finacea · GRAFIX/GRAFIXPL/STRAVIX · HUMIRA · Humira · ILUMYA (tildrakizumab-asmn) injection · Impoyz · OPZELURA · ORACEA · Olux · Otezla · PRAMOSONE · REMICADE · RINVOQ · SILIQ · SKYRIZI · SOOLANTRA · STELARA · Santyl · Sernivo Spray · Skyrizi · Sotyktu · TREMFYA · XEOMIN · XTRAC · Xeomin · Xolair
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
185
County median income
$108,917
Nearest hospital to ZIP centroid (approximate)
NORTHWESTERN LAKE FOREST 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
Dr. Berk is a clinical cardiology specialist, with above-average Medicare volume (top 16% in IL), 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. Berk experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Berk performed 1,679 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. Berk receive payments from pharmaceutical companies?
Yes. Dr. Berk received a total of $6,007 from 35 companies across 190 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. Berk's costs compare to other dermatologists in Lake Forest?
Dr. Berk's average Medicare payment per service is $59. 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. Berk) 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 →
Explore related providers
Same specialty & city
Dermatologists in Lake Forest
Browse dermatologists in Lake Forest ranked by procedure volume and transparency data.
Highest volume
Top Dermatologists in IL
Dermatologists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Dermatologists in IL
Which IL dermatologists receive the most from drug and device companies.
By company
Merz North America, Inc. Payments to Doctors
See all physicians who received payments from Merz North America, Inc.
By company
Janssen Biotech, Inc. Payments to Doctors
See all physicians who received payments from Janssen Biotech, Inc.
By company
AbbVie, Inc. Payments to Doctors
See all physicians who received payments from AbbVie, Inc.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology