William Walker Train, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Lancaster General Hospital Hospital · Lancaster, PA

Colleagues at Lancaster General Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 518 clinicians in the practice; 12 are shown here.

• Dr. Robert Scott Cheeseman II, MD Anesthesiology Physician · Lancaster, PA
• Katrina Marie De Vries, CRNP Family Medicine Physician · Reading, PA
• John K Derderian, DO Internal Medicine Physician · Lancaster, PA
• Anna Driscoll, MD Family Medicine Physician · Lancaster, PA
• Andrea D Girolamo, CRNP Adult Health Nurse Practitioner · Lancaster, PA
• Ellen Johnson, MD Pain Medicine (Anesthesiology) Physician · Lancaster, PA
• Evan John Knappenberger, PA-C Medical Physician Assistant · Lancaster, PA
• Katherine McHale, CRNP Acute Care Nurse Practitioner · Los Angeles, CA
• Heidi Medina, PA-C Physician Assistant · Ephrata, PA
• Laura K Moyer, MD Geriatric Medicine (Family Medicine) Physician · Lancaster, PA
• Mark Rast, MD Family Medicine Physician · Lancaster, PA
• Dr. Abby White, DO Surgery Physician · Lancaster, PA

Other providers in Lancaster

• Courtney Kristen Docherty, DO

  Individual Surgical Critical Care Physician · NPI 1871033191

  2106 Harrisburg Pike Ste 310, Lancaster, PA 17601-2644 · (717) 544-5945

• Tracy Evans, MD

  Individual Surgical Critical Care Physician · NPI 1467479402

  555 N Duke St, Lancaster, PA 17602-2250 · (717) 544-5511

• James Ku, MD

  Individual Surgical Critical Care Physician · NPI 1740240928

  2150 Harrisburg Pike Ste 300, Lancaster, PA 17601-2644 · (717) 544-2935

• Daniel Wu, DO

  Individual Surgical Critical Care Physician · NPI 1811195498

  555 N Duke St, Lancaster, PA 17602-2250 · (717) 544-5945