Dr. Lee Tan, M.D.
What this data tells you about Dr. Tan
Dr. Lee Tan is a neurological surgery specialist in San Francisco, CA, with 15 years of NPI registration. Based on federal Medicare data, Dr. Tan performed 722 Medicare services across 457 unique beneficiaries.
Between the years covered by Open Payments, Dr. Tan received a total of $531,953 from 25 pharmaceutical and/or device companies across 521 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neurological surgery. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Tan 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 |
|---|---|---|---|
| Spinal fusion of additional segment A surgical procedure to join an additional section of the spine to the existing fusion. This is performed as a separate or subsequent step to stabilize more of the spinal column. |
248 | $328 | $2,019 |
| Spine fusion with cage or mesh device insertion A surgical procedure to fuse spine bones by inserting a cage or mesh device into the disc space. |
95 | $218 | $1,321 |
| Fusion of upper spine bone with removal of disc and release of spinal cord or nerve, each additional disc | 40 | $327 | $2,063 |
| Spinal fusion with disc removal and nerve release, 1 disc This surgery connects two or more vertebrae in the upper spine to stabilize the area. It involves removing a damaged disc and relieving pressure on the spinal cord or nerve. |
34 | $1,475 | $9,055 |
| 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. |
32 | $48 | $393 |
| Spinal fusion of neck, posterior approach A surgical procedure to join two or more vertebrae in the cervical spine using a back approach to stabilize the neck. |
29 | $727 | $6,929 |
| Spinal fusion and bone/disc removal, 1 disc A surgical procedure involving the fusion of lower spine bones and the partial removal of a spine bone or disc through the back. |
29 | $1,368 | $7,899 |
| Spinal stabilization device placement, 3-6 segments Surgical placement of a device to stabilize three to six vertebrae in the back. |
29 | $626 | $3,939 |
| Spinal stabilization device placement, 7-12 segments Surgical placement of a device to stabilize the back involving 7 to 12 spine bone segments. |
29 | $666 | $4,177 |
| Graft of donor bone to spine | 27 | $93 | $569 |
| Placement of stabilizing device to back of 1 spine bone in neck A procedure involving the placement of a stabilizing device on the back of a single vertebra in the neck. |
22 | $641 | $3,934 |
| Partial removal of spine bone with nerve release, each additional segment This procedure involves the partial removal of spinal bone to relieve pressure on the spinal cord or nerves. It is billed for each additional spinal segment treated beyond the initial segment. |
22 | $178 | $1,080 |
| Spinal stabilization device placement, 2-3 segments Surgical placement of a device to stabilize the front of two to three spinal segments. |
18 | $584 | $3,744 |
| Spinal stabilization device placement, 4-7 segments Surgical placement of a device to stabilize the front of the spine across four to seven bone segments. |
17 | $637 | $3,894 |
| Partial removal of spine bone with nerve release, 1 segment Surgical removal of part of the spinal bone to relieve pressure on the spinal cord or nerves in one segment. |
15 | $570 | $6,804 |
| Additional lumbar spine fusion and bone/disc removal This procedure involves fusing additional vertebrae in the lower back and partially removing bone or disc material through an incision in the back. |
13 | $268 | $1,631 |
| Computer-assisted spinal procedure A surgical or diagnostic procedure involving the spine that utilizes computer technology to assist with planning, navigation, or execution. |
12 | $193 | $1,216 |
| Partial removal of spine bone, more than 2 segments Surgical removal of part of the spine bone to explore or release the upper spinal cord or nerves across more than two spinal segments. |
11 | $1,122 | $7,354 |
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 ›
The majority of payments (50%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in neurological surgery and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 4% for neurological surgery in CA.
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. Tan is a mixed practice specialist, with above-average Medicare volume (top 15% in CA), with speaking/promotional industry engagement in the top 4% of CA peers, 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
Is Dr. Tan experienced with spinal fusion of additional segment?
Does Dr. Tan receive payments from pharmaceutical companies?
How do Dr. Tan's costs compare to other neurological surgerists in San Francisco?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology