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; 1,001–1,100 of 2,327.

NameSpecialtyCity
Sergio Klimkowski, MDDiagnostic RadiologyHouston, TX
Ann H Klopp, MD PHDRadiation OncologyHouston, TX
Stephanie R Knight, APRN FNP-CNurse PractitionerHouston, TX
Susan L Knippel, RN, FNPNurse PractitionerHouston, TX
Justin D Knowles, NP-CNurse PractitionerHouston, TX
Ashley S Knox, MS, RN, FNP-CNurse PractitionerHouston, TX
Eugene J Koay, M.D., PH.D.Radiation OncologyHouston, TX
Kimberly H Koenig, M.D.Hematology-OncologyHouston, TX
Evelin L Kolenc, MSN, APRN-FNP-CNurse PractitionerHouston, TX
Rachel Koller, DNP, NPNurse PractitionerHouston, TX
Spogmai N Komak, MDGeneral SurgeryGalveston, TX
Tsuyoshi Konishi, MD, PHDColorectal Surgery (Proctology)Houston, TX
Dimitrios P Kontoyiannis, M.D.Infectious DiseaseHouston, TX
Linda Koo, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Kwame Koom-Dadzie, M.D.Internal MedicineHouston, TX
Edmund S Kopetz, M.D.Medical OncologyHouston, TX
Brinda R Korivi, M.D.Diagnostic RadiologyHouston, TX
Steven M Kornblau, M.D.Internal MedicineHouston, TX
Shibu Koshy, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Riya T Kottoor, NP-CNurse PractitionerHouston, TX
Efstratios Koutroumpakis, M.D.CardiologyHouston, TX
Craig A Kovitz, M.D.Hematology-OncologyHouston, TX
Alicia M Kowalski, M.D.AnesthesiologyHouston, TX
Dhanalakshmi Koyyalagunta, M.D.Pain ManagementHouston, TX
Angela N Krach, APRN-CNurse PractitionerHouston, TX
Simone Krebs, M.D.Nuclear MedicineHouston, TX
Pavitra Krishnamani, MDEmergency MedicineHouston, TX
Savitri Krishnamurthy, M.D.PathologyHouston, TX
Juliet Kroll, PHDPsychologist, ClinicalHouston, TX
Michael H Kroll, MDHematology-OncologyHouston, TX
Joshua D Kuban, MD, MMSInterventional RadiologyHouston, TX
Cynthia Kudakachira, NPNurse PractitionerHouston, TX
Eitan Kugler, MD PHDHematologyHouston, TX
Manila KumarNurse PractitionerHouston, TX
Salil Kumar, M.D.CardiologyHouston, TX
Savita Kumar, PA-CPhysician AssistantHouston, TX
Vinodh A Kumar, M.D.Diagnostic RadiologyHouston, TX
Andrea R Kummer, APRNNurse PractitionerHouston, TX
Uma R Kundu, M.D.PathologyHouston, TX
Jessy S Kurian, NPNurse PractitionerHouston, TX
Jolly C Kurian, NP-CNurse PractitionerHouston, TX
Mary Kurian, DNP, APRN, FNP-CNurse PractitionerHouston, TX
Jacob T Kuruvila, PA-CPhysician AssistantHouston, TX
Rachel B Kushaney, NPNurse PractitionerHouston, TX
Andrzej Kwater, MDAnesthesiologyHouston, TX
Piotr A Kwater, M.D.AnesthesiologyHouston, TX
Cindy Kwok, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Michael C Kwon, M.D.Diagnostic RadiologyHouston, TX
Irene Kyritsis, NPNurse PractitionerHouston, TX
Kevin Lagman, NP-CNurse PractitionerHouston, TX
Amit Lahoti, MDNephrologyHouston, TX
Chao-Ming Lai, RN, ANPNurse PractitionerHouston, TX
Emily LaiAnesthesiologyHouston, TX
Stephen Y Lai, MD,PHDOtolaryngologyHouston, TX
Isabel Laiseca-Ruiz, PA-CPhysician AssistantHouston, TX
Jusjit Lalli, M.DInternal MedicineHouston, TX
Peter M Lamie, D.O.HospitalistHouston, TX
Joshua Landrum, PA-CPhysician AssistantHouston, TX
Deanna L Lane, M.D.Diagnostic RadiologyHouston, TX
John S Lane, DOInternal MedicineHouston, TX
Frederick F Lang, M.D.NeurosurgeryHouston, TX
Miriam N Lango, M.D.OtolaryngologyHouston, TX
Hugo R Lara-Martinez, MDHematology-OncologyHouston, TX
Rene D Largo, M.D.Plastic and Reconstructive SurgeryHouston, TX
Kelly J Larkin, M.D.Emergency MedicineHouston, TX
Andrew J Larson, RN FNPNurse PractitionerHouston, TX
Javier D Lasala, M.D.AnesthesiologyHouston, TX
Nooreahmed Latiff, P.A.Physician AssistantHouston, TX
Bonnie Lau, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Christian Laubscher, PAPhysician AssistantJacksonville, FL
Victor R Lavis, M.D.Internal MedicineHouston, TX
Judith Lawrence, FNPNurse PractitionerHouston, TX
Kristie Lawrence, FNPNurse PractitionerHouston, TX
Barrett Lawson, M.D.PathologyHouston, TX
Rachel M Layman, M.D.Medical OncologyHouston, TX
Alexander J Lazar, M.D.,PHDPathologyHouston, TX
Anh Tuyet Le, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Huong Le, MDRheumatologyHouston, TX
Jeffrey N Le, NPNurse PractitionerHouston, TX
Ott Le, MDDiagnostic RadiologyGalveston, TX
Phat H Le, MDHematology-OncologyHouston, TX
Truong Le, APRNNurse PractitionerHouston, TX
Xiuning Le, M.D.Internal MedicineBoston, MA
Daniel J Leal Alviarez, MDInternal MedicineHouston, TX
Kim O Learned, MDDiagnostic RadiologyHouston, TX
Eufemia Leathers, NPNurse PractitionerHouston, TX
Nicole Leboeuf, M.D.DermatologyWorcester, MA
Celia R Ledet, M.D.General SurgeryHouston, TX
Anna Lee, MD, MPHRadiation OncologyHouston, TX
Byron H Lee, M.D., PH.D.UrologyHouston, TX
Hun J Lee, MD, MBAMedical OncologyHouston, TX
Jeffrey H Lee, M.D.GastroenterologyHouston, TX
Kathie-Ann LeeNurse PractitionerBaytown, TX
Mijeong K Lee, FNPNurse PractitionerHouston, TX
Sarah J Lee, NPNurse PractitionerHouston, TX
Shelly C Lee, RN, CRNACertified Registered Nurse Anesthetist (CRNA)Houston, TX
Stephen R Lee, MDDiagnostic RadiologyHouston, TX
Sun Mi Lee, M.D.PathologyHouston, TX
Sunyoung Lee, MDMedical OncologyHouston, TX
Wendi S Lee, RN FNPNurse 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