Medicare Enrolled
Dr. James Lahti, M.D.
Dermatology · Northbrook, IL
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Lahti 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. Lahti?
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What this data tells you about Dr. Lahti
Dr. James Lahti is a dermatology specialist in Northbrook, IL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Lahti performed 7,144 Medicare services across 4,921 unique beneficiaries.
Between the years covered by Open Payments, Dr. Lahti received a total of $711 from 13 pharmaceutical and/or device companies across 31 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in dermatology. 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. Lahti 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.
✓ 19 years in practice
▲ Top 14% volume in IL
$711 industry payments
Medicare Practice Summary
Medicare Utilization ↗7,144
Medicare services
Top 14% in IL for dermatology
4,921
Unique beneficiaries
$200
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~376 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. |
1,084 | $477 | $1,451 |
| 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. |
863 | $73 | $191 |
| 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. |
473 | $6 | $14 |
| Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks | 464 | $351 | $879 |
| 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. |
462 | $58 | $148 |
| 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. |
452 | $44 | $120 |
| Epifix, per square centimeter | 428 | $118 | $301 |
| 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. |
313 | $211 | $1,016 |
| 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. |
278 | $446 | $1,361 |
| 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. |
271 | $161 | $652 |
| 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. |
236 | $40 | $143 |
| Skin biopsy, tangential A procedure to remove a sample of the first identified skin growth for laboratory examination. |
235 | $62 | $216 |
| 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. |
206 | $102 | $271 |
| 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. |
111 | $43 | $107 |
| 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. |
96 | $186 | $914 |
| 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. |
96 | $109 | $384 |
| 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. |
90 | $640 | $1,658 |
| Skin substitute graft application, 25 sq cm or less Application of a skin substitute graft to a wound on the trunk, arms, or legs covering 25 square centimeters or less. |
73 | $109 | $333 |
| 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. |
68 | $140 | $356 |
| 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. |
62 | $80 | $242 |
| 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. |
60 | $144 | $666 |
| Intraoperative pathology examination, first tissue block A pathologist examines a tissue sample removed during surgery to provide a preliminary diagnosis. This test is performed on the first tissue block obtained from the procedure. |
51 | $85 | $212 |
| Complex wound repair, 1.1-2.5 cm A surgical procedure to close a complex wound measuring between 1.1 and 2.5 centimeters on areas such as the face, neck, hands, or feet. |
46 | $168 | $836 |
| 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. |
45 | $214 | $1,074 |
| Complex repair of eyelid, nose, ear, or lip wound, 1.1-2.5 cm A surgical procedure to repair a complex wound on the eyelid, nose, ear, or lip that measures between 1.1 and 2.5 centimeters. |
42 | $194 | $916 |
| 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. |
39 | $129 | $612 |
| 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. |
32 | $77 | $370 |
| 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. |
32 | $337 | $841 |
| Destruction of cancer skin growth, 0.6-1.0 cm This procedure involves the removal or destruction of a cancerous skin growth located on the trunk, arms, or legs that measures between 0.6 and 1.0 centimeters. |
31 | $94 | $316 |
| Ear tissue biopsy A procedure to remove a small sample of tissue from the ear for laboratory examination. |
31 | $52 | $207 |
| Skin graft repair, 10 sq cm or less A surgical procedure to repair a wound by transferring a small piece of skin to the affected area. The graft covers wounds on the face, neck, hands, feet, or other specified body parts. |
25 | $654 | $1,645 |
| 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. |
24 | $798 | $1,994 |
| 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. |
24 | $860 | $2,151 |
| 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. |
22 | $121 | $602 |
| 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. |
21 | $105 | $526 |
| 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. |
21 | $82 | $240 |
| Intermediate wound repair, 2.5 cm or less This procedure involves stitching a wound on the scalp, underarms, trunk, arms, or legs that is 2.5 centimeters or smaller. It includes cleaning the wound and closing it with sutures to promote healing. |
20 | $162 | $564 |
| Removal of noncancer skin growth, 2.1-3.0 cm This procedure involves the surgical removal of a benign skin growth located on the body, arms, or legs. The excised tissue measures between 2.1 and 3.0 centimeters in diameter. |
18 | $91 | $428 |
| 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. |
18 | $194 | $723 |
| Intermediate wound repair, 2.5 cm or less A medical procedure to close a wound on the neck, hands, feet, or genitals that is 2.5 centimeters or smaller. It involves cleaning the area and stitching the skin layers to promote healing. |
18 | $140 | $570 |
| Flap graft to eyelids, nose, ears, lips, or mouth A surgical procedure that moves a section of skin and tissue from one area to another to reconstruct or repair the eyelids, nose, ears, lips, or mouth. |
18 | $663 | $1,691 |
| 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. |
16 | $853 | $2,147 |
| Removal of noncancer skin growth, 1.1-2.0 cm This procedure involves the surgical removal of a benign skin growth measuring between 1.1 and 2.0 centimeters from the scalp, neck, hands, feet, or genitals. |
14 | $83 | $387 |
| Surgical removal of skin cancer, 3.1-4.0 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 is between 3.1 and 4.0 centimeters. |
14 | $222 | $673 |
| Skin cancer removal, face/ears/eyes/nose/lips, 2.1-3.0 cm Surgical removal of a cancerous skin growth from the face, ears, eyelids, nose, lips, or mouth. The procedure involves excising a lesion measuring between 2.1 and 3.0 centimeters. |
14 | $274 | $681 |
| Destruction of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm | 14 | $122 | $404 |
| 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. |
14 | $57 | $154 |
| Skin flap transfer to eyelids, nose, ears, or lips A surgical procedure where a section of skin is moved from one area to the eyelids, nose, ears, or lips to cover a defect or wound. |
13 | $397 | $997 |
| 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. |
12 | $81 | $269 |
| Ear cartilage harvest for grafting Surgical removal of cartilage from the ear to be used as a graft in another part of the body. |
12 | $534 | $1,597 |
| Complicated wound repair, each additional 5 cm or less This code covers the additional work for repairing a complex wound in specified body areas when the repair extends beyond the initial measurement. It applies to each incremental 5.0 cm or less added to the primary repair length. |
11 | $147 | $364 |
| Skin graft for scalp, arm, or leg wound, 10.1-30 sq cm This procedure involves repairing a wound on the scalp, arms, or legs by transferring skin from another area to cover the defect. The graft size is between 10.1 and 30.0 square centimeters. |
11 | $738 | $1,880 |
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.
0.4% high complexity
5.4% medium
94.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$711
Total received (2018-2024)
Avg $118/year across 6 years
Bottom 32% in IL for dermatology
13
Companies
31
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
$711 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$184
2023
$67
2022
$49
2021
$49
2019
$105
2018
$256
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
GENZYME CORPORATION
$99
Incyte Corporation
$43
SUN PHARMACEUTICAL INDUSTRIES INC.
$23
MIMEDX Group, Inc.
$19
Top 3 companies account for 89.5% of 2024 payments
All-time payments by company (2018-2024) ›
Genentech USA, Inc.
$190
GENZYME CORPORATION
$131
Janssen Biotech, Inc.
$102
Novartis Pharmaceuticals Corporation
$48
Incyte Corporation
$43
Sun Pharmaceutical Industries Inc.
$39
UCB, Inc.
$35
SUN PHARMACEUTICAL INDUSTRIES INC.
$23
Ortho Dermatologics, a division of Bausch Health US, LLC
$22
Lilly USA, LLC
$20
MIMEDX Group, Inc.
$19
Galderma Laboratories, L.P.
$19
Regeneron Healthcare Solutions, Inc.
$18
Top 3 companies account for 59.6% of all-time payments
Associated products mentioned in payments ›
ARAZLO · COSENTYX · Cimzia · DUPIXENT · Erivedge · ILUMYA · LIBTAYO · ODOMZO (sonidegib) capsules · OPZELURA · REMICADE · TALTZ · Tremfya · 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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Dermatologists within 10 mi
358
Per 100K population
6.9
County median income
$81,797
Nearest hospital
CHICAGO BEHAVIORAL HOSPITAL
5.6 mi
5.6 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. Lahti is a clinical cardiology specialist, with above-average Medicare volume (top 14% in IL), with low-engagement industry engagement, with 19 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. Lahti experienced with skin growth removal and lab exam, 1-5 blocks?
Based on Medicare claims data, Dr. Lahti performed 1,084 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. Lahti receive payments from pharmaceutical companies?
Yes. Dr. Lahti received a total of $711 from 13 companies across 31 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. Lahti's costs compare to other dermatologists in Northbrook?
Dr. Lahti's average Medicare payment per service is $200. 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. Lahti) 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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