Dr. Mary Feng, M.D.
What this data tells you about Dr. Feng
Dr. Mary Feng is a radiology - diagnostic specialist in San Francisco, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Feng performed 1,244 Medicare services across 721 unique beneficiaries.
Between the years covered by Open Payments, Dr. Feng received a total of $5,658 from 4 pharmaceutical and/or device companies across 19 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in radiology - diagnostic. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Feng 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 |
|---|---|---|---|
| CT guidance for radiation therapy This procedure uses computed tomography imaging to guide the precise placement of radiation therapy fields. It ensures accurate positioning for targeted treatment delivery. |
318 | $41 | $305 |
| Calculation of radiation therapy dose | 282 | $29 | $831 |
| Design and construction of radiation treatment device This code covers the design and construction of a device used for high precision radiation therapy. It does not include the actual administration of radiation treatment. |
104 | $209 | $1,042 |
| High precision radiation therapy planning This procedure involves the detailed planning and setup required for delivering high-precision radiation therapy to a target area of the body. |
102 | $388 | $7,676 |
| Complex radiation therapy planning | 100 | $150 | $4,490 |
| New patient office visit, complex (60-74 min) | 85 | $157 | $1,153 |
| Respiratory data collection for radiation therapy planning This procedure involves gathering respiratory data to help develop the optimal radiation treatment plan. |
59 | $95 | $607 |
| Radiation treatment management, 5 sessions Oversight and management of a radiation therapy course consisting of five treatment sessions. |
59 | $177 | $2,854 |
| Fractionated radiation therapy for cranial lesion Treatment using radiation delivered in multiple sessions to manage a lesion in the head. |
42 | $574 | $4,399 |
| Design and construction of complex radiation treatment device This code covers the design and construction of a complex radiation treatment device. It does not specify the clinical purpose or conditions treated. |
41 | $56 | $1,481 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
34 | $126 | $736 |
| Special radiation treatment | 18 | $99 | $1,481 |
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 (73%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers.
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. Feng is a mixed practice specialist, with moderate Medicare volume, with consulting-driven industry engagement in the top 16% of CA peers, 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. Feng experienced with ct guidance for radiation therapy?
Does Dr. Feng receive payments from pharmaceutical companies?
How do Dr. Feng's costs compare to other radiology - diagnostics 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