Sean Kevin Maroney, 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.

• Marinhealth Medical Center Hospital · Greenbrae, CA
• Novato Community Hospital Hospital · Novato, CA
• Sonoma Valley Hospital Hospital · Sonoma, CA

Colleagues at Regents Univ of California UCSF

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 272 clinicians in the practice; 12 are shown here.

• Joshua James Benham, MD Student in an Organized Health Care Education/Training Program · San Francisco, CA
• Dr. Andrew James Desruisseau, MD Infectious Disease Physician · Santa Rosa, CA
• Robert Doris Student in an Organized Health Care Education/Training Program · Larkspur, CA
• Orna Hananel, MD Family Medicine Physician · San Rafael, CA
• Dr. Kevin Hwang, MD Orthopaedic Surgery Physician · San Francisco, CA
• Pankaj Malhotra, MD Cardiovascular Disease Physician · Larkspur, CA
• Dr. Rina S Marfatia, MBBS, MD Infectious Disease Physician · Greenbrae, CA
• Bonni S. Massa, MD Obstetrics & Gynecology Physician · Petaluma, CA
• Dr. Robert Lee Newbury, MD Internal Medicine Physician · Novato, CA
• Dr. David L Shepard, MD Internal Medicine Physician · Nellis AFB, NV
• Dr. Ernest H. Sponzilli, MD Orthopaedic Surgery Physician · Larkspur, CA
• Stephan Venables, PT Orthopedic Physical Therapist · Larkspur, CA

Other providers in Larkspur

• Keith F Korver MD a Professional Medical Corporation

  Organization Surgery Physician · NPI 1790819613

  2 Bon Air Rd Ste 100, Larkspur, CA 94939-1144 · (415) 927-0666

• Dr. Stephanie Jacquelyn Maroney, MD

  Individual Surgery Physician · NPI 1003106436

  5 Bon Air Rd Ste 101, Larkspur, CA 94939-1134 · (415) 924-2515

• James Minnis, MD

  Individual Surgery Physician · NPI 1417169954

  5 Bon Air Rd Ste 101, Larkspur, CA 94939-1143 · (415) 924-2514

• Pacific Heart Surgery

  Organization Surgery Physician · NPI 1548741648

  2 Bon Air Rd Ste 100, Larkspur, CA 94939 · (415) 269-0001

• Lisa Park

  Individual Surgery Physician · NPI 1568857142

  5 Bon Air Rd Ste 101, Larkspur, CA 94939-1134 · (415) 924-2515