Clinicians affiliated with Porter Physician Services LLC

99 clinicians on file with this group · most practice in Chicago-Naperville-Elgin, IL-IN · PAC ID 1850482407

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

91 clinicians affiliated with Porter Physician Services LLC are in the 2024 Medicare Part B data, 71 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 · Cardiology (15) · Internal Medicine (14) · Nurse Practitioner (14) · Family Practice (11) · Gastroenterology (10) · General Surgery (5) · Critical Care (Intensivists) (4) · Physician Assistant (4) · Pulmonary Disease (3) · Audiologist (2) · Clinical Cardiac Electrophysiology (2) · Interventional Cardiology (2) · Neurology (2) · Hematology-Oncology (1) · Thoracic Surgery (1) · Urology (1)

Specialty links go to the specialty in Chicago-Naperville-Elgin, IL-IN.

Clinicians affiliated with Porter Physician Services LLC, 2024

Alphabetical by last name; 91.

Name	Specialty	City
Keerat Rai Ahuja	Interventional Cardiology	West Reading, PA
James P Anthony, MD	Pulmonary Disease	Valparaiso, IN
Alan M Auerbach, M.D.	Gastroenterology	Buffalo Grove, IL
Jennifer Aversano, FNP	Nurse Practitioner	Valparaiso, IN
Helda Barakat, MD	Internal Medicine	Valparaiso, IN
Chad A Bogue, NP	Nurse Practitioner	Portage, IN
Tareq Braik, M.D.	Hematology-Oncology	Valparaiso, IN
Thomas M Browne, M.D.	Family Practice	Knox, IN
Christine J Bruno, MD	Gastroenterology	Valparaiso, IN
Thomas J Carter, DO, PHD	Family Practice	Trinidad, CO
Vijaya K Chapala, MD	Internal Medicine	Valparaiso, IN
Anish Chopra, MD	Gastroenterology	Valparaiso, IN
Tami Clinkenbeard, NP	Nurse Practitioner	La Porte, IN
Adam L Cordray, DO	Critical Care (Intensivists)	Valparaiso, IN
Steven M Dandalides, M.D.	Gastroenterology	Greenville, NC
Raghuram Dasari, M.D.	Clinical Cardiac Electrophysiology	Valparaiso, IN
Christos F Deamont, DO	Internal Medicine	Pontiac, MI
Jennifer L Defauw	Nurse Practitioner	Valparaiso, IN
Brittany M Dixon, M.D.	Cardiology	Olympia Fields, IL
Mark Dixon, D.O.	Clinical Cardiac Electrophysiology	Valparaiso, IN
Geraldine G Feria, M.D.	Internal Medicine	Wanatah, IN
Asia Filatov, MD	Neurology	Boca Raton, FL
Erica Flores, MD	Cardiology	Tempe, AZ
Neil Gupta, MD	Gastroenterology	Des Plaines, IL
Heather S Hazel, MD	Family Practice	La Porte, IN
Jamal Hussain, MD	Internal Medicine	Lakewood, CA
Timothy M Husted, MD	General Surgery	Toledo, OH
Leslie Jacob, MD	Gastroenterology	Sebring, FL
Syed Mehdi A Jafri, DO	Cardiology	West Bloomfield, MI
Ajoe John Kattoor, MBBS	Interventional Cardiology	La Porte, IN
Muhammad Khan, M.D.	Internal Medicine	Richmond, TX
Bibhu Koirala, M.D.	Critical Care (Intensivists)	Pittsburgh, PA
Maya Kommineni, MD	Cardiology	Valparaiso, IN
Ranga R Kota, M.D.	Gastroenterology	Portage, IN
David M Kraklau, M.D.	Urology	Saint Joseph, MI
Stella Kyung, M.D.	Cardiology	Valparaiso, IN
Artemii Lazarev, MD	Internal Medicine	Chicago, IL
Jeremy R Luedtke, M.D.	General Surgery	La Porte, IN
Roberto A Luna, NP	Nurse Practitioner	Knox, IN
Kristen Lynch, FNP-C	Nurse Practitioner	Hobart, IN
Ather A Malik, DO	Family Practice	Valparaiso, IN
Hector J Marchand, M.D.	Internal Medicine	Valparaiso, IN
Hector J Marchand, M.D.	Cardiology	La Porte, IN
Andrew Martin	General Surgery	La Porte, IN
Shaun S Mehdi, DO	Internal Medicine	Portage, IN
Jose W Mejia, MD	Cardiology	West Lake Hills, TX
Michael F Mirochna, M.D.	Family Practice	Valparaiso, IN
Baqhar Mohideen, MD	Pulmonary Disease	Portage, IN
Deborah A Novak, AUDIOLOGIST	Audiologist	Valparaiso, IN
Chike F Okolocha, DO	Family Practice	Valparaiso, IN
Myrna P Orbana, M.D.	Pulmonary Disease	Elkhart, IN
Leonard W Ostrowski, M.D.	Family Practice	Portage, IN
Vijayapraveena Paruchuri, MD	Cardiology	Auburn, NY
Stephen H Paul, M.D.	Gastroenterology	Valparaiso, IN
Jaron L Pettis	General Surgery	La Porte, IN
Joel Phillips, FNP	Nurse Practitioner	Valparaiso, IN
Kajal P Puranik, M.D.	Family Practice	Portage, IN
Norma I Ramey, M.D.	Critical Care (Intensivists)	Valparaiso, IN
Shilpa Ravella, M.D.	Gastroenterology	Mchenry, IL
Mark E Ritter, M.D.	Family Practice	Chesterton, IN
Julia L Rogers, FNP	Nurse Practitioner	Valparaiso, IN
Leon B Rosen, M.D.	Cardiology	Milwaukee, WI
Reuben C Rutland, M.D.	General Surgery	Chicago, IL
Charnjeet S Sandhu, M.D.	Cardiology	Santa Cruz, CA
Michael Schwuchow	Nurse Practitioner	Valparaiso, IN
Yabiz Sedghi, MD	Cardiology	Cincinnati, OH
Sandeep Sehgal, M.D.	Cardiology	Valparaiso, IN
Sangeeta D Sehgal, MD	Internal Medicine	Valparaiso, IN
Jay Shah, M.D	Cardiology	Valparaiso, IN
Zaid A Shakir, M.D.	Critical Care (Intensivists)	Baltimore, MD
Leah C Shetler, PHYSICIAN ASSISTANT	Physician Assistant	Goshen, IN
Daniela M Sikoski, MD	Internal Medicine	Valparaiso, IN
Sinan A Simsir, MD	Thoracic Surgery	Dubuque, IA
Jamario R Skeete, M.D.	Internal Medicine	Chicago, IL
Amy L Sobas, N.P.	Nurse Practitioner	Portage, IN
Elizabeth Sobczak	Nurse Practitioner	Valparaiso, IN
Maria L Stamp, MD	Family Practice	Valparaiso, IN
Richard H Strawsburg, M.D.	Neurology	Valparaiso, IN
Akshay R Trivedi, D.O.	Gastroenterology	Valparaiso, IN
Robin R Tudor, MMS, PA-C	Physician Assistant	Valparaiso, IN
Crystal I Tuncay, DO	Internal Medicine	Valparaiso, IN
Ali Tutar, M.D.	Internal Medicine	St Augustine, FL
Ling D Twohig, DO	Cardiology	Beloit, WI
Britt N Vanda, FNP	Nurse Practitioner	Valparaiso, IN
Michelle R Vasquez, NP	Nurse Practitioner	Valparaiso, IN
Emily M Waldkoetter, PA-C	Physician Assistant	Valparaiso, IN
Allison Witte	Audiologist	Valparaiso, IN
Candice M Yu-Fleming, MD	Family Practice	Portage, IN
Helana Zakher	Physician Assistant	Valparaiso, IN
Shailesh C Zaveri, MD	Cardiology	Schaumburg, IL
Jeannette Zelhart-Smith, NP	Nurse Practitioner	Fort Wayne, IN

Practice locations

Listed practice locations in Indiana.

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