Dr. Frederick Joseph Nachtwey, MD

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.

• Contra Costa Regional Medical Center Hospital · Martinez, CA

Colleagues at Bass Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 292 clinicians in the practice; 12 are shown here.

• Robert Chance Algar, MD Neurology Physician · Walnut Creek, CA
• Dr. Mary K Cardoza, MD Surgery Physician · Pittsburg, CA
• Dr. Brian T. Chin, MD Surgery Physician · Walnut Creek, CA
• MS. Amy Le, FNP Family Nurse Practitioner · Isla Vista, CA
• Kai C. Lee, MD Neurology Physician · Walnut Creek, CA
• Michael Todd Murray, MD Otolaryngology Physician · San Jose, CA
• Patrick R Ryan, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Richard Craig Shinaman, MD Pain Medicine (Anesthesiology) Physician · Pleasant Hill, CA
• McKenzie Marie Tolan, MD Otolaryngology Physician · Napa, CA
• Christopher Welty, MD Urology Physician · Oakland, CA
• Philip C Yee, MD Gastroenterology Physician · San Ramon, CA
• Victoria Yung Gastroenterology Physician · Walnut Creek, CA

Other providers in Walnut Creek

• Michael Patrick Murphy, MD

  Individual Sleep Medicine (Internal Medicine) Physician · NPI 1013964410

  2623 Shadelands Dr Ste 1, Walnut Creek, CA 94598-2512 · (925) 933-8462

• Dr. Manjari Nathan, MD

  Individual Sleep Medicine (Internal Medicine) Physician · NPI 1033386503

  2637 Shadelands Dr, Walnut Creek, CA 94598-2512 · (925) 944-0166