Clinicians affiliated with Regents Univ Of California Ucsf

283 clinicians on file with this group · most practice in San Francisco-Oakland-Fremont, CA · PAC ID 6305160300

Affiliation snapshotOctober 2, 2026CMS Doctors and Clinicians file, current snapshot (no end-of-2024 archive), applied to 2024
Activity year2024Medicare Part B claims, Original Medicare fee-for-service

239 clinicians affiliated with Regents Univ Of California Ucsf are in the 2024 Medicare Part B data, 176 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report

Affiliated clinicians by specialty, 2024

All specialties · Physician Assistant (32) · Obstetrics & Gynecology (20) · Nurse Practitioner (19) · Cardiology (16) · Orthopedic Surgery (16) · Family Practice (15) · Internal Medicine (14) · Emergency Medicine (11) · Gastroenterology (9) · Otolaryngology (7) · Psychiatry (7) · Dermatology (6) · Physical Therapist in Private Practice (6) · Urology (5) · Anesthesiology (4) · Critical Care (Intensivists) (4) · General Surgery (4) · Nephrology (4) · Vascular Surgery (4) · Endocrinology (3) · Infectious Disease (3) · Interventional Cardiology (3) · Licensed Clinical Social Worker (3) · Neurology (3) · Audiologist (2) · Physical Medicine and Rehabilitation (2) · Pulmonary Disease (2) · Rheumatology (2) · Thoracic Surgery (2) · Advanced Heart Failure and Transplant Cardiology (1) · Clinical Cardiac Electrophysiology (1) · Colorectal Surgery (Proctology) (1) · General Practice (1) · Gynecological Oncology (1) · Hand Surgery (1) · Hospice and Palliative Care (1) · Pediatric Medicine (1) · Podiatry (1) · Sports Medicine (1) · Surgical Oncology (1)

Specialty links go to the specialty in San Francisco-Oakland-Fremont, CA.

Clinicians affiliated with Regents Univ Of California Ucsf, 2024

Alphabetical by last name; 201–239 of 239.

NameSpecialtyCity
Samantha S Spinner, PA-CPhysician AssistantPetaluma, CA
Ernest H Sponzilli, M.D.Physical Medicine and RehabilitationLarkspur, CA
Benjamin StahlGeneral SurgeryLarkspur, CA
Jessica StuhlLicensed Clinical Social WorkerGreenbrae, CA
Brian Su, MDOrthopedic SurgeryLarkspur, CA
Anita D Szady, M.D.Advanced Heart Failure and Transplant CardiologyLarkspur, CA
Lyndly J Tamura, M.D.Physical Medicine and RehabilitationNew York, NY
Willie Tang, MDInternal MedicineLarkspur, CA
Robert D Teasdale, M.D.Orthopedic SurgeryGreenbrae, CA
Alyssa B Thompson-Tucker, FNPNurse PractitionerLarkspur, CA
Alexander W Threlfall, MDPsychiatryGreenbrae, CA
Kenneth J Tobin, DOCardiologyAnn Arbor, MI
Diana ToblerCardiologyLarkspur, CA
Gregg Tolliver, M.D.Infectious DiseaseGreenbrae, CA
Ashmi UllalObstetrics & GynecologyRohnert Park, CA
Mary O Ulrich, MDObstetrics & GynecologySan Francisco, CA
Edward C Vander Clute, LCSWLicensed Clinical Social WorkerNovato, CA
Elijah VerheyenGastroenterologyCorte Madera, CA
Kathryn Vest, PT, DPTPhysical Therapist in Private PracticeLarkspur, CA
Kirsten J VossObstetrics & GynecologyGreenbrae, CA
Emil S Vutescu, MDOrthopedic SurgeryProvidence, RI
Christopher A Walter, D.O.Orthopedic SurgerySonoma, CA
Aileen WangEndocrinologyGreenbrae, CA
Derek T Ward, M.D.Orthopedic SurgerySan Francisco, CA
Luisa R Ward, LCSWLicensed Clinical Social WorkerNovato, CA
Leslie C West, MDNeurologySan Francisco, CA
Elisabeth R Widman, MDFamily PracticeSan Rafael, CA
Donna Wiggins, M.D.Obstetrics & GynecologySan Francisco, CA
Mary Ellen Wilkosz, FNPNurse PractitionerNovato, CA
Brandon M Wong, PA-CPhysician AssistantGreenbrae, CA
Lia A Wystrach, BSN, RN, MN, FNP-CNurse PractitionerLarkspur, CA
Rhunjay J Yu, M.D.UrologyGreenbrae, CA
Denise A Yun, MDInternal MedicineOakland, CA
Warda Zaman, D.O.NephrologyGreenbrae, CA
Katerina A Zappas-Levy, MDObstetrics & GynecologyGreenbrae, CA
Stefan M Zechowy, M.D.OtolaryngologySanta Rosa, CA
Elizabeth M Zettersten, MDDermatologySan Rafael, CA
Wanda W Zhao, PA-CPhysician AssistantGreenbrae, CA
Jim ZhuPhysical Therapist in Private PracticeSanta Clara, CA

Practice locations

Listed practice locations in California.

Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.

Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations