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
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; 1,801–1,900 of 2,327.
| Name | Specialty | City |
|---|---|---|
| Gillis G Schwartz, MD | Diagnostic Radiology | Houston, TX |
| Katherine A Schwartz, PA-C | Physician Assistant | Houston, TX |
| Lisa C Scofield, PA-C | Physician Assistant | Houston, TX |
| Devan E Scott, APRN | Nurse Practitioner | Houston, TX |
| Tiffany N Seals, APRN, FNP-C | Nurse Practitioner | Houston, TX |
| Renju Sebastian, NP | Nurse Practitioner | Houston, TX |
| Ronnie A Sebro, MD, PHD | Diagnostic Radiology | Houston, TX |
| Leigh K Seeley, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| Justin Sellers, PA-C | Physician Assistant | Houston, TX |
| Jayastu Senapati, MD, DM | Hematology | Houston, TX |
| Michelle S Senechalle, M.D. | Internal Medicine | Houston, TX |
| Indranil Sen-Gupta, M.D. | Neurology | Las Vegas, NV |
| Myrna K Serna, M.D. | Internal Medicine | Houston, TX |
| Christina Serna-Blanco, N.P. | Nurse Practitioner | Houston, TX |
| Marissa L Shafei, PA-C | Physician Assistant | Houston, TX |
| Aaron Shafer, M.D. | Gynecological Oncology | Houston, TX |
| Joseph G Shafer, AA-C | Anesthesiology Assistant | Houston, TX |
| Sarah S Shafer, MD | Emergency Medicine | Houston, TX |
| Mehnaz A Shafi, MD | Gastroenterology | Houston, TX |
| Amishi Y Shah, MD | Medical Oncology | Houston, TX |
| Ketan Y Shah, M.D. | Interventional Radiology | Houston, TX |
| Komal B Shah, M.D. | Diagnostic Radiology | Houston, TX |
| Shalin J Shah, MD | Radiation Oncology | Houston, TX |
| Amber N Shahid, PA-C | Physician Assistant | Houston, TX |
| Simona Shaitelman, MD | Radiation Oncology | Houston, TX |
| Ekta G Sharma, M.D. | Physical Medicine and Rehabilitation | Houston, TX |
| Leah K Shaw, MSN, RN, AGPCNP-BC | Nurse Practitioner | Houston, TX |
| Paul L Shay, M.D. | Plastic and Reconstructive Surgery | Houston, TX |
| Martha Shed, PA-C | Physician Assistant | Houston, TX |
| Courtney L Sheffield, PA-C | Physician Assistant | Houston, TX |
| Samuel Shelburne, MD | Infectious Disease | Houston, TX |
| John Paul Y Shen, M.D. | Hematology-Oncology | Houston, TX |
| Nicole F Sheppard, FNP | Nurse Practitioner | Houston, TX |
| Anneleis W Sherfield, PA-C | Physician Assistant | Houston, TX |
| Steven I Sherman, M.D. | Endocrinology | Houston, TX |
| Ajay Sheshadri, MD | Pulmonary Disease | Houston, TX |
| Rahul A Sheth, M.D. | Interventional Radiology | Houston, TX |
| Shailee M Sheth, AGNP-C | Nurse Practitioner | Houston, TX |
| Ann A Shi, M.D. | Diagnostic Radiology | Houston, TX |
| Jessica Shie, M.D. | Internal Medicine | Houston, TX |
| Haley F Shields, PA-C | Physician Assistant | Houston, TX |
| Joseph K Shin, APRN | Nurse Practitioner | Houston, TX |
| Ki Y Shin, M.D. | Physical Medicine and Rehabilitation | Houston, TX |
| Kyungmin Shin, MD | Diagnostic Radiology | Houston, TX |
| Anusha Shirwaikar Thomas, M.D. | Internal Medicine | Houston, TX |
| Elena Shlimak, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| Nicholas J Short, MD | Internal Medicine | Houston, TX |
| Elizabeth J Shpall, M.D. | Hematopoietic Cell Transplantation and Cellular Therapy | Houston, TX |
| Girish S Shroff, MD | Diagnostic Radiology | Houston, TX |
| Young Shrout | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| John W Shuck, M.D. | Plastic and Reconstructive Surgery | Houston, TX |
| Rosalie L Sicalag, APRN | Nurse Practitioner | Houston, TX |
| Natasha A Siddiqi, PA-C | Physician Assistant | Houston, TX |
| Asiya Siddiqui, PA | Physician Assistant | Houston, TX |
| Bilal A Siddiqui, M.D. | Internal Medicine | Boston, MA |
| Zuhair Siddiqui, M.D. | Anesthesiology | Houston, TX |
| Arlene O Siefker-Radtke, M.D. | Medical Oncology | Houston, TX |
| Allison R Siegel, PA-C | Physician Assistant | Houston, TX |
| Andrew G Sikora, M.D., PH.D. | Otolaryngology | Houston, TX |
| Randi B Siller, PA-C | Physician Assistant | Houston, TX |
| Elizabeth Silva, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| Elvio G Silva, MD | Pathology | Houston, TX |
| Jason M Silva, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| Ninoska N Silva, PA-C | Physician Assistant | Houston, TX |
| Emily T Sim | Physician Assistant | Houston, TX |
| Cesar A Simbaqueba Clavijo, M.D. | Internal Medicine | Pittsburgh, PA |
| Rinata Simien, NP-C | Nurse Practitioner | Houston, TX |
| Bindu Simon, APRN | Nurse Practitioner | Houston, TX |
| Nissy Simon, MSN, APRN, FNP-C | Nurse Practitioner | Houston, TX |
| Teresa A Simon, PA-C | Physician Assistant | Houston, TX |
| Travis T Sims, M.D. | Gynecological Oncology | Houston, TX |
| Prachee Singh, PA-C | Physician Assistant | Houston, TX |
| Puneet Singh, M.D. | General Surgery | Houston, TX |
| Eric K Singhi, M.D. | Hematology-Oncology | Houston, TX |
| Grecia A Singleton, MD | Hospice and Palliative Care | Houston, TX |
| Kanishka Sircar, MD | Pathology | Houston, TX |
| Ferdinandos Skoulidis, M.D. | Medical Oncology | Houston, TX |
| Laura B Sloan, PA-C | Physician Assistant | Houston, TX |
| John M Slopis, M.D., MPH | Neurology | Houston, TX |
| Brandon G Smaglo, MD | Medical Oncology | Houston, TX |
| Portia I Smallbone, MD | Hematology | Houston, TX |
| Amber N Smith, FNP | Nurse Practitioner | Houston, TX |
| Benjamin D Smith, M.D. | Radiation Oncology | Houston, TX |
| Catherine V Smith, CRNA | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| Grace Smith, MD | Radiation Oncology | Houston, TX |
| Jason T Smith, P.A.-C. | Physician Assistant | Houston, TX |
| Jesse J Smith, MD, PHD | Surgical Oncology | Houston, TX |
| Lori A Smith, PA-C | Physician Assistant | Houston, TX |
| Re'shonda F Smith | Certified Registered Nurse Anesthetist (CRNA) | Houston, TX |
| Thomas G Smith, M.D. | Urology | Houston, TX |
| Nour Sneige, M.D. | Pathology | Houston, TX |
| Rebecca A Snyder, M.D. | Surgical Oncology | Houston, TX |
| Tieme R Soares, PA | Physician Assistant | Houston, TX |
| Ahmad J Soboh, APRN | Nurse Practitioner | Houston, TX |
| Mahveen Sohail, MD | Geriatric Medicine | Houston, TX |
| Maria Christina Soliman, NP | Nurse Practitioner | Houston, TX |
| Pamela T Soliman, M.D. | Gynecological Oncology | Houston, TX |
| Jose M Soliz, M.D. | Anesthesiology | Houston, TX |
| Lexie Sollman, PA-C | Physician Assistant | Houston, TX |
| Neeta Somaiah, M.D. | Internal Medicine | Houston, 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