Isabelle Struve

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. Those with a page here are linked.

• John Muir Medical Center - Concord Campus Hospital · Concord, CA · listed as John Muir Medical Ctr Concord Campus
• San Ramon Regional Medical Center Hospital · San Ramon, CA
• Sutter Delta Medical Center Hospital · Antioch, CA
• John Muir Medical Center - Walnut Creek Campus Hospital · Walnut Creek, CA

Colleagues at John Muir Trauma Physicians Billing Service

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 111 clinicians in the practice; 12 are shown here.

• Afshin A Anoushiravani Orthopaedic Surgery Physician · Walnut Creek, CA
• Christopher Coufal, MD Orthopaedic Surgery Physician · Walnut Creek, CA
• Dr. Amarjit Singh Dosanjh, MD Plastic Surgery Physician · Concord, CA
• Dr. Michael A Esparza, MD Surgical Critical Care Physician · Walnut Creek, CA
• Dr. Mehrbod Som Javadi, MD Nuclear Radiology Physician · Baltimore, MD
• Mr. Ramin Khashayar, MD Critical Care Medicine (Internal Medicine) Physician · Walnut Creek, CA
• Dr. Daniel Kim, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Mauricio Kuri, MD Surgery Physician · Martinez, CA
• Christopher C Lee, MD Diagnostic Radiology Physician · Walnut Creek, CA
• Dr. Ming-Tyh Maa, MD Critical Care Medicine (Internal Medicine) Physician · Walnut Creek, CA
• Richard Nguyen, DO Anesthesiology Physician · Springfield, MA
• Evan Sirc, MD Student in an Organized Health Care Education/Training Program · Santa Cruz, CA

Other providers in Walnut Creek

• Alison C Savitz, MD

  Individual Surgery Physician · NPI 1891732400

  1425 S Main St Surgery Dept Kaiser Permanente, Walnut Creek, CA 94596-5318 · (925) 295-7663

• Dr. Ben Schwab, MD

  Individual Surgery Physician · NPI 1619239852

  1479 Ygnacio Valley Rd # 150, Walnut Creek, CA 94598-2986 · (925) 296-7340

• Dr. Nicolas C Skaric, MD

  Individual Surgery Physician · NPI 1497970107

  2121 Ygnacio Valley Rd Ste E204, Walnut Creek, CA 94598-3383 · (925) 939-5866

• Dr. Jacob Spivak, MD

  Individual Surgery Physician · NPI 1649306283

  1425 S Main St, Walnut Creek, CA 94596-5318 · (925) 295-7854

• U Wellness Wound Care APC

  Organization Surgery Physician · NPI 1538966643

  1399 Ygnacio Valley Rd Ste 11D, Walnut Creek, CA 94598-2874 · (925) 357-9033

• Dr. John Ulric Zink, MD

  Individual Surgery Physician · NPI 1366628935

  2637 Shadelands Dr, Walnut Creek, CA 94598-2512 · (925) 932-6330