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Daniel Bitetto, MD
Program Director

Bio: I completed my undergraduate at Hofstra University in New York and majored in Biology, with minors in Chemistry and Physics. I went to Medical School at the University of Texas Medical Branch. I completed my residency at Lehigh Valley Hospital in Allentown, Pa and went on to a General Internal Medicine Fellowship at Geisinger Medical Center in Danville, Pa where I studied informatics and graduate medical education.

My philosophy of medicine is to work closely and efficiently with the patients in my care. I strive to teach and educate my patients about their health and underlying conditions in easy and relatable ways. It is important to me to listen and respect each person that I care for when guiding decisions for their health.

I chose to enter medicine because it offered me the best way to apply my interests in science (Biology, Biochemistry and Physics) in a meaningful way. There is a rewarding experience by using my knowledge and training to positively impact someone's life. This comes with the added benefit while facing the challenges of modern medicine.

My personal interests include the delivery of cost-effective healthcare provided in a time efficient manner. I am also very interested in nutrition, lifestyle and the wellness of my patients, academic partners and students.

Michael Cerino, DO
Associate Program Director

Bio: Dr. Michael A. Cerino II is board certified in internal medicine. Dr. Cerino obtained his bachelor and master’s degrees in biology from East Stroudsburg University and his osteopathic medical degree from the Philadelphia College of Osteopathic Medicine. Dr. Cerino completed internship and internal medicine residency at the former Mercy Suburban Hospital. He served as Chief Medical Resident in his third year of residency. Dr. Cerino is a Fellow of the American College of Osteopathic Internists.

Dr. Cerino joined the hospitalist service at Montgomery Hospital Medical Center upon competition of his residency in 2010. He then moved with the hospital to Einstein Medical Center Montgomery in 2012 where he remains. Dr. Cerino serves on various standing committees of the medical staff and is a past president of the Medical Staff Board.

Dr. Cerino is originally from the Slate Belt region of northeastern Pennsylvania and is a veteran of the United States Air Force. He currently resides in Collegeville with his wife and three children.

Michael Esrick, MD

Claudia Lum, DO

Bio: Dr. Claudia S. Lum is board certified in internal medicine. Dr. Lum completed her undergraduate studies at the Pennsylvania State University and medical school at the Philadelphia College of Osteopathic Medicine. Both her internship and internal medicine residency were completed at the former Mercy Suburban Hospital. She served as Chief Intern during internship. Dr. Lum is a Fellow of the American College of Osteopathic Internists.

Since completing residency Dr. Lum has worked as both a hospitalist and skilled nursing facility-ist. She has been at Einstein since early 2016. She had been a teaching Hospitalist at her former job and has been delighted to start teaching again at Einstein Montgomery.

Dr. Lum grew up in England, but now calls Collegeville her home. She lives with her husband and three children.

Aysha Jilani, MD
Associate Program Director

Dr. Jilani graduated from Sindh Medical College (now Jinnah Sindh Medical University) in Karachi, Pakistan, and completed residencies in internal medicine at Graduate Hospital and Einstein Medical Center Philadelphia. She is board-certified in internal medicine and a member of the Pennsylvania Medical Society. She provides a full scope of adult internal medical care. Dr. Jilani is fluent in both English and Urdu.

Dr. Jilani grew up in Abington, Pennsylvania and worked 11 years at Abington Memorial Hospital. There she was an ICU daylighter, teaching Hospitalist, and primary care physician out of offices in Abington and Warrington. During this time, she also worked at Rydal Park nursing home as primary care physician for independent and assisted living patients. She briefly did home visits for Signify Health and joined the faculty at EMCM in 2019 working in the ambulatory clinic for Einstein Physicians Norriton.

In her spare time, she enjoys traveling the world, hiking, indoor rock climbing, art, performing ballroom and WCS, and has a special interest in wellness and holistic care.

Ahashta Johnson, MD

Dr. Johnson completed her undergraduate training at Temple University, Philadelphia, PA with a BA in Anthropology: Human Biology Track in 2001. She obtained her Medical Doctorate from Jefferson Medical College, Philadelphia PA (now Sidney Kimmel Medical College) in 2005. Dr. Johnson completed an Internal Medicine - Pediatrics residency at Albert Einstein Medical Center, Philadelphia, PA in 2009, serving as Chief Resident during her fourth year. She continued her training at Montefiore Medical Center in Bronx, New York, completing a Palliative Medicine Fellowship. Dr. Johnson is board-certified in both Internal Medicine and Palliative Medicine.

In 2010, she joined the medical staff of Montgomery Hospital to serve as Hospice Medical Director for Montgomery Hospice and lead the Palliative Care Department. In 2012, Dr. Johnson continued on staff with the opening of Einstein Medical Center Montgomery.

While at Montgomery Hospital/EMCM, Dr. Johnson continues to serve as Ethics Committee Chairperson and on various other committees. Outside of the Einstein Network, Dr. Johnson has been a member of both the PA Medical Society & Montgomery County Medical Society, participating in the organized medicine realm, including the annual House of Delegates Meetings over the past several years. She was recently elected as the Montgomery County Representative for the Women Physicians Section of PA Medical Society.

Special interests include compassionate yet effective communication, leadership education, and narrative medicine. In her spare time, she enjoys listening to podcasts & audiobooks, gardening, cooking, and running with her dog.

Dr. Johnson is a native Philadelphian who still resides in Philadelphia with her husband and two children.

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