Clinicians affiliated with Ucsf Medical Group Business Services

1,598 clinicians on file with this group · most practice in San Francisco-Oakland-Fremont, CA · PAC ID 3779497870

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

1,230 clinicians affiliated with Ucsf Medical Group Business Services are in the 2024 Medicare Part B data, 999 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 · Nurse Practitioner (137) · Diagnostic Radiology (106) · Internal Medicine (99) · Neurology (94) · Physician Assistant (56) · Cardiology (55) · Hematology-Oncology (55) · Family Practice (50) · Orthopedic Surgery (50) · Ophthalmology (41) · Neurosurgery (31) · Medical Oncology (30) · Gastroenterology (29) · Otolaryngology (29) · Nephrology (27) · Urology (27) · Obstetrics & Gynecology (26) · Optometry (26) · Dermatology (23) · General Surgery (23) · Endocrinology (19) · Pulmonary Disease (19) · Radiation Oncology (19) · Infectious Disease (17) · Psychiatry (15) · Rheumatology (14) · Hospitalist (12) · Geriatric Medicine (6) · Pediatric Medicine (6) · Physical Medicine and Rehabilitation (6) · Advanced Heart Failure and Transplant Cardiology (5) · Critical Care (Intensivists) (5) · Hematology (5) · Hospice and Palliative Care (5) · Interventional Radiology (5) · Psychologist, Clinical (5) · Vascular Surgery (5) · Allergy/ Immunology (4) · Interventional Pain Management (4) · Plastic and Reconstructive Surgery (4) · Anesthesiology (3) · Clinical Cardiac Electrophysiology (3) · Gynecological Oncology (3) · Interventional Cardiology (3) · Adult Congenital Heart Disease (2) · Audiologist (2) · Pain Management (2) · Pathology (2) · Physical Therapist in Private Practice (2) · Podiatry (2) · Sleep Medicine (2) · Thoracic Surgery (2) · Colorectal Surgery (Proctology) (1) · Emergency Medicine (1) · Hand Surgery (1) · Micrographic Dermatologic Surgery (1) · Nuclear Medicine (1) · Oral Surgery (Dentist only) (1) · Sports Medicine (1) · Undefined Physician type (1)

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

Clinicians affiliated with Ucsf Medical Group Business Services, 2024

Alphabetical by last name; 301–400 of 1,230.

NameSpecialtyCity
Brian Feeley, M.D.Orthopedic SurgerySan Francisco, CA
Christy FeigenbutzNurse PractitionerSan Francisco, CA
Mitchell D Feldman, MDInternal MedicineSan Francisco, CA
Michael J Feldstein, M.D.Orthopedic SurgerySan Francisco, CA
Vickie A Feldstein, M.D.Diagnostic RadiologySan Francisco, CA
Mary U Feng, M.D.Radiation OncologySan Francisco, CA
Stephanie G FengNurse PractitionerStanford, CA
Cynthia L Fenton, M.D.Internal MedicineMill Valley, CA
Timothy T Ferng, M.D.Hematology-OncologyNew York, NY
Nicholas Fidelman, M.D.Interventional RadiologySan Francisco, CA
Justin Field, MDGastroenterologyPhiladelphia, PA
Eric M Fine, PH.D.Psychologist, ClinicalSan Francisco, CA
Robin B Fischer, NURSE PRACTITIONERNurse PractitionerBaton Rouge, LA
Kelly N Fitzgerald, MDInternal MedicineSan Francisco, CA
Lauren E Flannery, DONeurologySan Francisco, CA
Michael Flannery, DONeurologySan Francisco, CA
Erin Flatley, RN, AGNP-BCNurse PractitionerSan Francisco, CA
Robert R Flavell, MDDiagnostic RadiologyNew York, NY
Kirsten E Fleischmann, M.D.CardiologySan Francisco, CA
Nathaniel H Fleming, MD, MSNeurologySan Francisco, CA
Lawrence Fong, MDHematology-OncologySeattle, WA
Magdelena M Ford, NPNurse PractitionerSan Francisco, CA
Elyse Foster, MDCardiologySan Francisco, CA
Lindy P Fox, MDDermatologySan Francisco, CA
Rena K Fox, MDInternal MedicineSan Francisco, CA
Rony A Francois, M.D., PH.D.DermatologyGainesville, FL
Annabel K Frank, MDHematology-OncologySan Francisco, CA
Rita I Freimanis, MDDiagnostic RadiologySan Francisco, CA
Chris E Freise, MDGeneral SurgerySan Francisco, CA
Sarah D FrenchRheumatologyStanford, CA
Michael E Friduss, MDOtolaryngologySanta Clara, CA
Terence W Friedlander, MSHematology-OncologySan Francisco, CA
Jonathan M Friedman, MDDiagnostic RadiologySan Francisco, CA
Katherine C Fuh, MDGynecological OncologySan Francisco, CA
Gretchen S Fulgencio, RN, NPNurse PractitionerBerkeley, CA
Gordon L Fung, MDCardiologySan Francisco, CA
Monica Fung, M.D., M.P.HInfectious DiseaseSan Francisco, CA
Simon S Fung, MDOphthalmologySan Francisco, CA
Meghana Gadgil, M.D.Internal MedicineBaltimore, MD
Therese E Gadomski, MDObstetrics & GynecologySan Francisco, CA
Karin Gaensler, MDHematology-OncologySan Francisco, CA
Erica R Gagliardi, RN, MSN, FNP-CNurse PractitionerSan Francisco, CA
Thomas W Gaither, MDUrologySan Francisco, CA
Robert S Gamburd, MDPhysical Medicine and RehabilitationSan Francisco, CA
Ashish R GandhiHospitalistSan Francisco, CA
Donna C Garay, ANP-BCNurse PractitionerStanford, CA
Paul A Garcia, M.D.NeurologySan Francisco, CA
Kristin Garrick, NPNurse PractitionerSan Francisco, CA
Warren J Gasper, M.D.Vascular SurgerySan Francisco, CA
Kellie M Gater, NPNurse PractitionerStanford, CA
Stephanie O Gay, MDFamily PracticeSan Francisco, CA
Jin GeInternal MedicineSan Francisco, CA
Liang D Ge, MDDiagnostic RadiologyPittsburgh, PA
Jeffrey M Gelfand, M.D.NeurologySan Francisco, CA
David Gendelberg, M.D.Orthopedic SurgerySan Francisco, CA
Lianne S Gensler, M.D.RheumatologySan Francisco, CA
Elizabeth George, MDDiagnostic RadiologySan Francisco, CA
Jonathan R George, M.D.OtolaryngologySan Francisco, CA
Josiah K Gerdts, M.D., PH.D.NeurologySan Francisco, CA
Alexandra Gersing, MDDiagnostic RadiologySan Francisco, CA
Edward Gerstenfeld, MDCardiologySan Francisco, CA
Yaron B Gesthalter, MDPulmonary DiseaseSan Francisco, CA
Ruby Ghadially, M.D.DermatologySan Francisco, CA
Katherine L GibsonNurse PractitionerSan Francisco, CA
Nisha H Gidwani, M.D.Pulmonary DiseaseSan Francisco, CA
Eugenia M Gil, FNP-BCNurse PractitionerSanta Rosa, CA
Christine M Glastonbury, MB, BSDiagnostic RadiologySan Francisco, CA
John M Glenn, DOGeneral SurgerySan Francisco, CA
Orit A Glenn, M.D.Diagnostic RadiologySan Francisco, CA
Stephen L Gluck, MDNephrologySan Francisco, CA
Erin Goerlich, M.D.CardiologySan Francisco, CA
Sarah E Goglin, MDRheumatologySan Francisco, CA
Andrew N Goldberg, MD, MSCEOtolaryngologySan Francisco, CA
David S Goldberg, M DPlastic and Reconstructive SurgeryMonterey, CA
Mindy E Goldman, M.D.Obstetrics & GynecologySan Francisco, CA
Jill S Goldstein, PA-CPhysician AssistantSan Francisco, CA
Ruth B Goldstein, M.D.Diagnostic RadiologySan Francisco, CA
Maria Josephina T Gomez, FNPNurse PractitionerPalo Alto, CA
John A Gonzales, M.D.OphthalmologyBronx, NY
Johan-R L Gonzalez, PAPhysician AssistantSanta Rosa, CA
Douglas S GoodinNeurologySan Francisco, CA
Karen M Goodwin, D.O.General SurgeryBerkeley, CA
John Gordan, M.D., PH.D.Hematology-OncologySan Bruno, CA
Erin D Gordon, M.D.Internal MedicineSan Diego, CA
Jill A GoslingaNeurologySan Francisco, CA
Jessica E Gosnell, MDGeneral SurgerySan Francisco, CA
Alexander R Gottschalk, M.D.Radiation OncologySan Francisco, CA
Regina Gould, PA-CPhysician AssistantSan Francisco, CA
Poorani N Goundan, MDEndocrinologySan Francisco, CA
Shwesha Govil, DOFamily PracticeSan Francisco, CA
Neha G Goyal, PH.D.Psychologist, ClinicalSan Francisco, CA
Conor Grady, MDNeurosurgeryTravis Afb, CA
John G Graham, M.D., PH.DEndocrinologySan Francisco, CA
Maya S Graham, M.D., PH.D.NeurologyNew York, NY
Maura A Granados Duncan, FNPNurse PractitionerSan Francisco, CA
Donald Grandis, MDCardiologySan Francisco, CA
Jennifer R Grandis, MDOtolaryngologyPittsburgh, PA
Ari J Green, M.D.NeurologySan Francisco, CA
Claire C Greene, MDInternal MedicineSan Francisco, CA
Heather Greenwood, MDDiagnostic RadiologySan Francisco, 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