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Clinic Type

Gastroenterology

Address

Phone

888-369-2427

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

Team

  • David Ethan Loren — MD, FASGE
  • Mayada Ismail — MD, ABOM
  • Minhhuyen T. Nguyen — MD, AGAF, FACP
  • Malorie K. Simons — MD
  • David S. Weinberg — MD, MSC
  • Olivia Carrasquillo — CRNP
  • Jaspreet Kaur — DNP, CRNP, FNP-BC, RN-BC

Insurance & Payment

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • WebMD (Dr. Kristen Singer): 3.0/5 (2 ratings (2 reviews))
  • Healthgrades (Dr. Jonathan Fenkel): 4.9/5 (466 reviews (ratings))
  • WebMD (Dr. Harvey Lefton): 4.5/5 (8 ratings)
  • Vitals (Dr. Anthony J. Di Marino): 4.1/5 (22 ratings (5 written reviews shown))
  • Birdeye (Penn Gastroenterology Perelman): 2.6/5 (28 reviews)
  • Penn Medicine (Gary R. Lichtenstein): 4.9/5 (496 reviews)
  • Penn Medicine (Kristle Lee Lynch): 5.0/5 (294 reviews)
  • Temple Health (Henry P. Parkman): 4.6/5 (405 ratings (72 comments))

Patients praise

  • Caring, knowledgeable care/bedside manner
  • Thorough explanations of conditions and treatment
  • Courteous staff / responsive care
  • Provides follow-up as needed
  • Patients report successful outcomes (e.g., improved health; one post-transplant success)

Common complaints

  • Not listening/dismissive or rushed visits
  • Poor communication/phone call or scheduling issues
  • Condescending or aggressive behavior
  • Long wait for in-person GI appointment or difficulty getting appointments
  • Office/admin issues that feel unhelpful

""Dr Singer did not listen to me, was aggressive and rude, and used retaliatory tactics...""

WebMD review for Dr. Kristen Singer

""No one returns phone calls...""

Vitals review for Dr. Anthony J. Di Marino

""This doctor is uncaring and frankly poor... stay away...""

Vitals highlights/review excerpts for Dr. Brenda J. Horwitz

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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