MS. Sandra Lynn Perez, NP

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.

• Peninsula Medical Center Hospital · Burlingame, CA · listed as Peninsula Medical Group
• San Mateo Medical Center Hospital · San Mateo, CA

Colleagues at County of San Mateo

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 316 clinicians in the practice; 12 are shown here.

• Dr. Janet Baek, MD Psychiatry Physician · Palo Alto, CA
• Dr. Taha Jabbar, MD Internal Medicine Physician · Chicago, IL
• Dr. Michael Paul Jaffe, MD Psychiatry Physician · Half Moon Bay, CA
• Chester Kunnappilly, MD Internal Medicine Physician · San Mateo, CA
• Francesca Maffei, NP Mental Health Counselor · San Jose, CA
• Gordon Koon-Man Mak, MD Internal Medicine Physician · Stanford, CA
• Dr. Katherine Ann Manalo, OD Optometrist · South San Francisco, CA
• MS. Sara Frances Okabayashi-Williams, FNP Family Nurse Practitioner · Daly City, CA
• Miss. Yuliya Skuba, LMFT Marriage & Family Therapist · San Mateo, CA
• Dr. John Thomas Sorrell, PHD Clinical Psychologist · South San Francisco, CA
• Demetra Serena Stamm, MD General Practice Physician · San Mateo, CA
• Nicole Westercamp, MD Psychiatry Physician · San Mateo, CA

Other providers in Half Moon Bay

• Svitlana Plaschke, NP

  Individual Nurse Practitioner · NPI 1124534920

  799 Main St Ste D, Half Moon Bay, CA 94019-1946 · (650) 726-1200