Faculty: leaders developing leaders.

Meet the leadership team of collaborative, skilled physicians who guide the internal medicine residency program at Dignity Health East Valley. Our faculty is trained to listen as thoroughly as they teach. You will see this in practice often, as faculty members engage with you and with our patient population. Faculty will take the time to answer your questions and to develop a holistic skill set in residents, from technique to bedside manner.

Program Administration

Allan Markus MD MS MBA FACP - Internal Medicine Residency Program Director
Shalini Chaliki MD- Associate Program Director - Palliative Care and Ambulatory Medicine
Melanie Cloonan-Schulte MD FACP- Assistant Program Director - Wellness and Ambulatory Medicine
Rachel Bond MD FACC - Assistant Program Director of Diversity, Equity and Inclusion
Julie Ladwig, C-TAGME, Program Coordinator

Core Faculty

Osaf Ahmed, MD – Ambulatory Clinic Director
Tiffany Hosten-Blackmond, MD – Ambulatory Subspecialty Director
Samuel Tytler, MD – Ambulatory Medicine
Melanie Cloonan-Schulte MD – Ambulatory Medicine
Nalini Tirumalasetty, MD – Endocrinology Subspecialty Director
Mike Maguire, DO – Critical Care Subspecialty Director
Rachel Bond, MD – Cardiology Subspecialty Director
Anthony Salibi, MD – Hospital Medicine Director
Zachary Burkhart, MD – Hospitalist
Sher Naidoo, MD – Hospitalist
Amit Waghray, MD – Hospitalist
Collins Appiah, MD – Hospitalist
Shyam Patel, MD – Hospitalist
Ashbeel Samuel, DO – Hospitalist
Atika Nayeem, MD – Hospitalist
Chelsi Scull, MD – Hospitalist
John Griffin, DO – Hospitalist
Carmen Oliveras, MD – Hospitalist

Internal Medicine Subspecialties

Ambulatory Medicine

Melanie Cloonan-Schulte MD FACP - Subspecialty Director - Ambulatory Medicine
Allan Markus MD MS MBA FACP - Internal Medicine Residency Program Director
Bruce Bethancourt MD FACP - Faculty, Ambulatory Medicine
Philip Ku MD - Faculty, Ambulatory Medicine Selective
Samuel Tytler MD, Ambulatory Medicine Selective
Osaf Ahmed MD, Ambulatory Medicine Selective

Cardiology

Nabil Dib MD FACC - Subspecialty Director - Cardiology
Bashar Markabawi MD FACC - Associate Subspecialty Director Cardiology
Ahtisham Shakoor MD - Faculty, Cardiology
Jaskanwal (Sonny) Bisla MD - Faculty, Cardiology
Rachel Bond MD FACC - Faculty, Cardiology
Sunny Jhamnani MD - Faculty - Cardiology
Fady Marmoush MD FACC - Faculty, Cardiology
Osama Niazi DO - Faculty, Cardiology
Georges Nseir MD - Faculty, Cardiology
Ashish Pershad MD MS- Faculty, Cardiology
Dhaval Shah MD MBBS FACC - Faculty, Cardiology

Critical Care

F. Mike Maguire DO - Subspecialty Director - Critical Care
Daniel Belen DO - Faculty, Critical Care
Ahmad Chebbo MD - Faculty, Critical Care
Phillip Husband MD - Faculty, Critical Care
Gary Nagamoto MD - Faculty, Critical Care
Pedro Quiroga MD - Faculty, Critical Care
Kris Roach MD - Faculty, Critical Care
Jack Short MD - Faculty, Critical Care
Michael Zgoda MD MBA CPE - Faculty, Critical Care & Chair Int Medicine DHMG

Emergency Medicine

Andi Wolff MD FACEP FAAEM - Subspecialty Director - Emergency Medicine

Endocrinology

Naga Nalini Tirumalasetty MD - Subspecialty Director - Endocrinology
Mohamad Horani MD - Faculty Endocrinology

Gastroenterology

Wael Youssef MD- Subspecialty Director - Gastroenterology
Chinyere Nwosu MD - Faculty, Gastroenterology

Geriatrics

Adkison, Talissa - Subspecialty Director - Geriatrics

Hematology/Oncology

Azam Farooqui MD - Subspecialty Director - Hematology/Oncology
Puneet Bhalla MD - Faculty, Hematology/Oncology
Ian Deroeck MD - Faculty, Hematology/Oncology
Neel Dharia MD - Faculty, Hematology/Oncology
Anita Koszyk-Szewczyk MD - Faculty, Hematology/Oncology
Kalyan Mantripragada MD - Faculty, Hematology/Oncology
Sumeet Mendonca MD - Faculty, Hematology/Oncology
Karen Ortiz Cruz MD - Faculty, Hematology/Oncology
Luke Halbur MD - Faculty, Hematology/Oncology
Sujith Kalmadi MD - Faculty, Hematology/Oncology
Christopher Kellogg MD - Faculty, Hematology/Oncology
Parvinderjit Singh Kahanuja MD - Faculty, Hematology/Oncology
Rohit Sud MD - Faculty, Hematology/Oncology

Infectious Disease

Michael Amoa-Asare MD - Subspecialty Director - Infectious Disease
Madhuri Segireddy MD - Faculty, Infectious Disease
Celestine Tchikounzi DO - Faculty, Infectious Disease

Inpatient Medicine/Hospitalist

David Tomich DO - Subspecialty Director - Inpatient Medicine
Collins Appiah MD - Faculty, Inpatient Medicine
Pedram Ayazi MD- Faculty, Inpatient Medicine
Linda Brown DO - Faculty, Inpatient Medicine
Zachary Burkhart MD - Faculty, Inpatient Medicine
Shradha Gupta MBBS - Faculty, Inpatient Medicine
Carmen Oliveras MD - Faculty, Inpatient Medicine
Shyam Patel MD - Faculty, Inpatient Medicine
Ramesh Ramaswamy MD - Faculty, Inpatient Medicine
Anthony Salibi DO - Faculty, Inpatient Medicine
Mahmood Shahlapour MD - Faculty, Inpatient Medicine
Amit Waghray MD - Faculty, Inpatient Medicine
Thuy-Ngan (Julia) Nguyen DO - Faculty, Inpatient Medicine

Nephrology

Clyde Mendonca MD - Subspecialty Director - Nephrology
Kariappa Appachu MD - Faculty, Nephrology
Rajan Kapoor MD FASN FACP - Faculty, Nephrology
Divya Singh Malladi MD - Faculty, Nephrology
Theodore (Teddy) Tzeremas MD - Faculty, Nephrology

Neurology

Jon Hodgson DO - Subspecialty Director - Neurology & Medical Staff President
David Salvatore DO - Faculty, Neurology

Pulmonary and Sleep Medicine

Jill Gualdoni MD - Subspecialty Director - Pulmonary/Sleep Medicine
Sankalp Choudhri MD - Associate Subspecialty Director - Pulmonary/Sleep Medicine
Phillip Husband MD- Faculty- Pulmonary and Sleep Medicine