Dr. Mark London, M.D.
What this data tells you about Dr. London
Dr. Mark London is a surgery specialist in Chicago, IL, with 15 years of NPI registration. Based on federal Medicare data, Dr. London performed 266 Medicare services across 262 unique beneficiaries.
Between the years covered by Open Payments, Dr. London received a total of $5,602 from 18 pharmaceutical and/or device companies across 93 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in surgery. 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. London 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.
Medicare Practice Summary
Medicare Utilization ↗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 |
|---|---|---|---|
| Revision of hemodialysis graft A procedure to repair or restore the function of a surgically created blood vessel connection used for hemodialysis. |
44 | $544 | $1,413 |
| Arm vein relocation with artery connection for hemodialysis A surgical procedure to move a vein in the arm and connect it to an artery to create access for hemodialysis. |
43 | $483 | $1,199 |
| Ultrasound of hemodialysis access An ultrasound imaging test used to evaluate the blood flow and structure of a hemodialysis access site. |
39 | $18 | $26 |
| Arteriovenous graft creation for hemodialysis Surgical procedure to create a connection between an artery and a vein using a synthetic tube graft to provide access for hemodialysis. |
35 | $474 | $1,259 |
| Pre-op ultrasound of artery and vein blood flow for hemodialysis access An ultrasound exam to assess blood flow in the arteries and veins on both sides of the body before surgery for hemodialysis access. |
21 | $28 | $66 |
| Endoscopic insertion of abdominal cavity tube A tube is placed into the abdominal cavity using an endoscope, which is a flexible instrument with a camera used to guide the procedure. |
20 | $281 | $753 |
| Endoscopic revision of abdominal cavity tube A procedure to adjust or repair a tube in the abdominal cavity using an endoscope. |
20 | $289 | $839 |
| Tying or banding of surgically created artery-vein connection This procedure involves closing off a surgically created connection between an artery and a vein by tying or banding it. |
19 | $241 | $717 |
| Hemodialysis circuit intervention with balloon dilation A procedure to insert a needle or tube into a hemodialysis circuit and dilate the dialysis segment using a balloon, with radiological review. |
13 | $177 | $414 |
| Abdominal cavity tube removal This procedure involves the removal of a tube located in the abdominal cavity. |
12 | $144 | $378 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (55%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 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. London is a mixed practice specialist, with moderate Medicare volume, with low-engagement industry engagement, with 15 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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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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