Clinicians affiliated with Ascension Seton Williamson

Acute Care Hospitals · Voluntary non-profit - Private · 201 Seton Parkway, Round Rock, TX 78664 · Austin-Round Rock-San Marcos, TX · CCN 670041

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

367 clinicians affiliated with Ascension Seton Williamson are in the 2024 Medicare Part B data (410 listed in the affiliation file).

Each clinician's exact figures are in their Physician Report, from their page. View sample report · Already purchased? Open your report (earlier Local report and passes)

Affiliated clinicians by specialty, 2024

All specialties · Anesthesiology (56) · Certified Registered Nurse Anesthetist (CRNA) (52) · Nurse Practitioner (39) · Physician Assistant (31) · Internal Medicine (27) · Diagnostic Radiology (23) · Orthopedic Surgery (15) · Neurology (12) · General Surgery (10) · Cardiology (9) · Interventional Cardiology (7) · Urology (7) · Family Practice (6) · Gastroenterology (6) · Pulmonary Disease (6) · Vascular Surgery (6) · Hospitalist (5) · Nephrology (5) · Otolaryngology (5) · Pathology (5) · Thoracic Surgery (5) · Emergency Medicine (4) · Clinical Cardiac Electrophysiology (3) · Medical Oncology (3) · Neurosurgery (3) · Physical Medicine and Rehabilitation (3) · Plastic and Reconstructive Surgery (3) · Hematology-Oncology (2) · Infectious Disease (2) · Certified Clinical Nurse Specialist (1) · Hand Surgery (1) · Obstetrics & Gynecology (1) · Pain Management (1) · Radiation Oncology (1) · Sports Medicine (1) · Surgical Oncology (1)

Clinicians affiliated with Ascension Seton Williamson, 2024

Alphabetical by last name; 201–300 of 367.

NameSpecialtyCity
James A Lyttle, MDAnesthesiologyAustin, TX
Ayanava Majumdar, MDInternal MedicineBrooklyn, NY
Anthony J Manuel, MDAnesthesiologyAustin, TX
Siva R Marri, M.D.Internal MedicineMedford, OR
Michelle MartinPhysician AssistantAustin, TX
Anthony Masaryk, MDDiagnostic RadiologyAustin, TX
Luke S Mccage, M.D.AnesthesiologyAustin, TX
Kathryn Mcdonald, AGACNPNurse PractitionerHarker Heights, TX
Deirdre M Mckee, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Ian D Mcloughlin, MDDiagnostic RadiologyAustin, TX
Brett A Mcmullen, PAPhysician AssistantRochester, NY
Patrick W Mcnair, M.D.Interventional CardiologyNew York, NY
John Mcnamara, MDEmergency MedicinePortland, ME
Catherine C Mcneese, MDPathologyRound Rock, TX
Ashley Mcneil, MDAnesthesiologyDallas, TX
Micha D Mcvey-Leach, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Matthew M Meigs, MDOtolaryngologyAustin, TX
Kyle L Mezger, M.D.AnesthesiologyAustin, TX
Jessica L Michinock, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Tiffany N Miller, AGACNP-BCNurse PractitionerAustin, TX
Lotika R Misra, M.D.NeurologyKyle, TX
Pradeep Modur, M.D.NeurologyAustin, TX
Matthew J Moen, MDAnesthesiologyAustin, TX
Soumya Mohanan, NURSE PRACTITIONERNurse PractitionerRound Rock, TX
Sergio A Montano, M.D.Internal MedicineRound Rock, TX
Patricia Andrea T Montierth, AGACNP-BCNurse PractitionerLiberty Hill, TX
William E Moody, P.A.Physician AssistantDallas, TX
John E Moran, M.D.Internal MedicineAustin, TX
Amanda Morrissette, MPAS, PA-CPhysician AssistantAustin, TX
Madhusudhana R Mudduluru, M.DInternal MedicineBryan, TX
Alyssa Mueller, PAPhysician AssistantTemple, TX
Jennifer L Mueller, CRNACertified Registered Nurse Anesthetist (CRNA)Temple, TX
Jeffrey D Murillo, D.O.Internal MedicineParkersburg, WV
Shantanu S Naik, M.D.Pulmonary DiseaseCedar Park, TX
Emilio R Narvaez, D.O.Internal MedicineTemple, TX
Brett Neal, PA-CPhysician AssistantAustin, TX
David A Nelson, MDAnesthesiologyAustin, TX
Jeremy L Nelson, ACNP-BCNurse PractitionerRound Rock, TX
William D Nelson, MDAnesthesiologyAustin, TX
Stephen J Neville, MDDiagnostic RadiologyDurham, NC
Jaclyn N Nguyen, MDEmergency MedicineRound Rock, TX
Nam H Nguyen, MDPhysical Medicine and RehabilitationAustin, TX
Tuan D Nguyen, M.D.CardiologyAustin, TX
Mario E Nieto, M.D.AnesthesiologyAustin, TX
Mark D Noble, M.D.AnesthesiologyDallas, TX
Bridget A O'Brien, D.O.Surgical OncologyCedar Park, TX
John O'Brien, P.A.Physician AssistantBronx, NY
Ee Sing A Ong, ACNPNurse PractitionerSan Antonio, TX
Masahiro OnoThoracic SurgeryAustin, TX
David Orsini, M.DOrthopedic SurgeryGeorgetown, TX
Juan R Ortega-Barnett, M.D.NeurosurgerySouth Weymouth, MA
Saleem M Oza, M.D.Internal MedicineAustin, TX
Stephen T Pan, MDDiagnostic RadiologyAustin, TX
Ursula Pandit, M.D.Internal MedicineBuffalo, NY
Heather Parks, AGACNP-BCNurse PractitionerRound Rock, TX
Shawna M Parsons, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Bhairav N Patel, M.D.Diagnostic RadiologyAustin, TX
Jigish N Patel, MDAnesthesiologyAustin, TX
Krishna A Patel, MDMedical OncologyRound Rock, TX
Roshni R Patel, PA-CPhysician AssistantRound Rock, TX
Suraj PatelDiagnostic RadiologyBrooklyn, NY
Alicia H Payne, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Rachel Pearson, M.D.NeurologyAustin, TX
Andrew C Pelphrey, M.D.NephrologyAustin, TX
Naga Maruthi K Perisetti, MBBSFamily PracticeLexington, KY
Rhiannon Pfullman, NPNurse PractitionerAustin, TX
Hong-Ngoc PhamNurse PractitionerCedar Park, TX
Mark J Pirwitz, MD, FACCInterventional CardiologyAustin, TX
Arjina Pradhan, ACNPNurse PractitionerAustin, TX
Russell Putnam, MDDiagnostic RadiologyAustin, TX
Yvonne Queralt, M.D.Diagnostic RadiologyAustin, TX
Beth W Quy, MDAnesthesiologyAustin, TX
Preethi Ramachandran, MDHematology-OncologyRound Rock, TX
Daniel J Ratcliff, MDOtolaryngologyRound Rock, TX
Brett A Rebal, M.D.AnesthesiologyAustin, TX
Sarah Reed, PA-CPhysician AssistantRound Rock, TX
Adelina Resendez, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Dan Richardson, MDDiagnostic RadiologyAustin, TX
Matthew Roberts, MDAnesthesiologyAustin, TX
Steven C Robertson, MDAnesthesiologyDallas, TX
Javier Rodriguez-Sanchez, M.D.Internal MedicineCedar Park, TX
Stephen D Rose, M.D.Hand SurgeryRound Rock, TX
Mustasim N Rumi, M.D.Orthopedic SurgeryRound Rock, TX
Hamidreza Saber, M.D, M.P.HNeurologyAustin, TX
Ming-Shing H Salas, MDAnesthesiologyAustin, TX
Gabriel J Salinas, M.D.General SurgeryAustin, TX
Praveen K Sampath, MDGastroenterologyMaywood, IL
Robert C Schutt, M.D.Interventional CardiologyCharlottesville, VA
Barbara D Sebastian, M.D.AnesthesiologyAustin, TX
Andrew T Seider, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Justine Self, FNPNurse PractitionerRound Rock, TX
Anna C Severn, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Darshan N Shah, MDNeurologyAustin, TX
Kunal Shah, M.D.Clinical Cardiac ElectrophysiologyRound Rock, TX
Wakeelah N Sharif, CRNACertified Registered Nurse Anesthetist (CRNA)Austin, TX
Courtney Sheinbein, M.D.Radiation OncologyRound Rock, TX
Brian J Shimkus, MDMedical OncologyGeorgetown, TX
David A Sierra, CRNACertified Registered Nurse Anesthetist (CRNA)Dallas, TX
Ravi Singh, M.D.AnesthesiologyChicago, IL
Thaw Sint, MDInternal MedicineAustin, TX

Affiliation comes from the CMS Doctors and Clinicians Facility Affiliation file, hospital rows only; name, address and type from the CMS Hospital General Information file. CMS does not publish an end-of-year archive of the affiliation file, so the current snapshot is applied to the latest data year. A clinician listed with several hospitals or groups appears on each of their pages. How hospital pages are built