Clinicians affiliated with Physicians Referral Service

2,765 clinicians on file with this group · most practice in Houston-Pasadena-The Woodlands, TX · PAC ID 7911801410

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

2,327 clinicians affiliated with Physicians Referral Service are in the 2024 Medicare Part B data, 1,288 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 (538) · Physician Assistant (342) · Diagnostic Radiology (160) · Internal Medicine (124) · Certified Registered Nurse Anesthetist (CRNA) (120) · Pathology (120) · Medical Oncology (95) · Anesthesiology (94) · Radiation Oncology (89) · Hematology-Oncology (78) · General Surgery (35) · Emergency Medicine (32) · Surgical Oncology (30) · Neurology (26) · Plastic and Reconstructive Surgery (26) · Interventional Radiology (25) · Gastroenterology (24) · Hospice and Palliative Care (23) · Otolaryngology (23) · Dermatology (21) · Urology (20) · Infectious Disease (19) · Endocrinology (18) · Hematology (18) · Gynecological Oncology (17) · Cardiology (16) · Hematopoietic Cell Transplantation and Cellular Therapy (15) · Neurosurgery (15) · Psychologist, Clinical (13) · Critical Care (Intensivists) (12) · Pulmonary Disease (12) · Hospitalist (11) · Nuclear Medicine (11) · Anesthesiology Assistant (10) · Physical Medicine and Rehabilitation (9) · Certified Clinical Nurse Specialist (8) · Nephrology (8) · Thoracic Surgery (8) · Ophthalmology (7) · Oral Surgery (Dentist only) (7) · Orthopedic Surgery (7) · Obstetrics & Gynecology (6) · Pain Management (6) · Psychiatry (5) · Rheumatology (5) · Colorectal Surgery (Proctology) (4) · Family Practice (4) · Vascular Surgery (4) · Clinical Cardiac Electrophysiology (1) · General Practice (1) · Geriatric Medicine (1) · Geriatric Psychiatry (1) · Licensed Clinical Social Worker (1) · Medical Genetics and Genomics (1) · Pediatric Medicine (1)

Specialty links go to the specialty in Houston-Pasadena-The Woodlands, TX.

Clinicians affiliated with Physicians Referral Service, 2024

Alphabetical by last name; 2,001–2,100 of 2,327.

NameSpecialtyCity
Davis C Teichgraeber, MDDiagnostic RadiologyHouston, TX
Jegy M Tennison, MDPhysical Medicine and RehabilitationHouston, TX
Shawn S Terry, PA-CPhysician AssistantHouston, TX
Sanjit O Tewari, M.D.Interventional RadiologyHouston, TX
Dilip R Thakar, MDAnesthesiologyHouston, TX
Beenu Thakral, M.D.PathologyHouston, TX
Jennifer Thankachan, APRNNurse PractitionerHouston, TX
Sajini M Thekkel, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Jisha G Thekkumthara, NPNurse PractitionerHouston, TX
Leah M Theriot, PA-CPhysician AssistantHouston, TX
Selvi Thirumurthi, M.D.GastroenterologyHouston, TX
Ajay Thomas, PACPhysician AssistantHouston, TX
Amari Thomas, NPNurse PractitionerHouston, TX
Anumol ThomasNurse PractitionerHouston, TX
Ashly Thomas, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Bency A Thomas, PA-CPhysician AssistantHouston, TX
George P Thomas, M.D., PH.D.NeurologyMckinney, TX
Hema Thomas, APRNNurse PractitionerHouston, TX
Jainy Thomas, APRNNurse PractitionerHouston, TX
Jessica O Thomas, MSN, FNP-CNurse PractitionerHouston, TX
Jisha A Thomas, FNPNurse PractitionerHouston, TX
Jomol E Thomas, NPNurse PractitionerHouston, TX
Juliana M Thomas, FNPNurse PractitionerHouston, TX
Malini Thomas, APRNNurse PractitionerMissouri City, TX
Parijatham Thomas, M.D.Medical OncologyHouston, TX
Princey Thomas, ACNP, RNNurse PractitionerHouston, TX
Sheeba K Thomas, MDMedical OncologyHouston, TX
Sheena ThomasNurse PractitionerSugar Land, TX
Sherin Thomas, NPNurse PractitionerHouston, TX
Teena M Thomas, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Terez M Thomas, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Valencia D Thomas, M.D.DermatologyHouston, TX
Cecilia A Thompson, APRNNurse PractitionerHouston, TX
Kara A Thompson, M.D.CardiologyHouston, TX
Margaret M Thompson, PA-CPhysician AssistantHouston, TX
Rekha P Thoppil, MDNurse PractitionerHouston, TX
Sonali N Thosani, MDEndocrinologyHouston, TX
Marla Throssel, APRNNurse PractitionerHouston, TX
Gordon S Tilney, PA-CPhysician AssistantHouston, TX
Laura Timciuc, PA-CPhysician AssistantHouston, TX
Shaun B Tindall, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Connie To, APRNNurse PractitionerHouston, TX
Ronnie S Tobias, NPNurse PractitionerHouston, TX
Sarah E Todd, PA-CPhysician AssistantHouston, TX
Martin Tom, M.DRadiation OncologyHouston, TX
Evangeline P Tomongha, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Annie Toms, APRNNurse PractitionerHouston, TX
Sophy Tomy, FNPNurse PractitionerHouston, TX
Smitty Tony, NPNurse PractitionerHouston, TX
Harrys A Torres, M.D.Infectious DiseaseHouston, TX
Carlos A Torres Cabala, MDPathologyHouston, TX
Gokce Toruner, MD, PHDMedical Genetics and GenomicsNewark, NJ
Margarita Tovbin, APRNNurse PractitionerHouston, TX
Amy Tran, NPNurse PractitionerHouston, TX
Connie T Tran, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Jennifer Tran, APRNNurse PractitionerHouston, TX
Justine Tran, NPNurse PractitionerHouston, TX
Phuoc T Tran, MD, PHDRadiation OncologyHouston, TX
Phuong N Tran, APRNNurse PractitionerHouston, TX
Victoria T Tran, PA-CPhysician AssistantHouston, TX
Hop S Tran Cao, M.D.Surgical OncologyHouston, TX
Ivo W Tremont-Lukats, MDNeurologyOrlando, FL
Cynthia M Trevino, RN, ANPNurse PractitionerHouston, TX
George Triadafilopoulos, MD INC.GastroenterologyHouston, TX
Megan A Trogus, PA-CPhysician AssistantHouston, TX
Patricia Troncoso, M.D.PathologyHouston, TX
Agnes Trueman, ANPNurse PractitionerHouston, TX
Minh Ngan Q Truong, PA-CPhysician AssistantHouston, TX
Mylene T Truong, M.D.Diagnostic RadiologyHouston, TX
Theresa T Truong, APRNNurse PractitionerHouston, TX
Frank Trzaska, AAAnesthesiology AssistantHouston, TX
Edward Tsai, MDAnesthesiologyHouston, TX
January Y Tsai, MDAnesthesiologyHouston, TX
Anne Tsao, M.D.Hematology-OncologyHouston, TX
Jacqueline M Tschanz, MDHospice and Palliative CareHouston, TX
Apostolia M Tsimberidou, M.D., PHDHematology-OncologyHouston, TX
Hilda H Tso, DODiagnostic RadiologyHouston, TX
Chi E Tsui, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Janet C Tu, M.D.Medical OncologySugar Land, TX
Wen Tung, PA-CPhysician AssistantHouston, TX
Kimberly Turner, PA-CPhysician AssistantHouston, TX
Laura J Turner, PA-CPhysician AssistantHouston, TX
Nadiya Tverdun, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
David J Tweardy, MDInfectious DiseaseHouston, TX
Colby Tyler, PA-CPhysician AssistantHouston, TX
Ching-Wei D Tzeng, MDSurgical OncologyHouston, TX
Fehime E Ucisik, M.D.Diagnostic RadiologyHouston, TX
Judith Ufondu, FNP-CNurse PractitionerHouston, TX
Ugochi Ugwuegbulam, FNPNurse PractitionerHouston, TX
Fernando Uliana Kay, M.D.Diagnostic RadiologyHouston, TX
Elizabeth S Urquiola, PA-CPhysician AssistantHouston, TX
Joma Uthup, APRNNurse PractitionerHouston, TX
Pamela A Uzoigwe, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Shital Vachhani, M.D.AnesthesiologyHouston, TX
Marcelo V Vailati Negrao, M.D.Medical OncologyHouston, TX
Alan D Valentine, M.D.PsychiatryHouston, TX
Raul F Valenzuela Perez, M.D.Diagnostic RadiologyHouston, TX
Vincente Valero, M.D.Medical OncologyHouston, TX
Antoinette K Van Meter, M.D.AnesthesiologyHouston, TX
Tracy A Van Wieren, ANP - CNurse PractitionerHouston, TX

Practice locations

Listed practice locations in Texas.

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