Find the Best Gastroenterologists Near Me in Hempstead, NY

Gastroenterology • Hempstead, NY

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About

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Clinic Type

Gastroenterology

Address

121 Eileen Way, Syosset, NY 11791

Phone

219-476-7246

Email

marketplace@tebra.com

Opening Hours

Not published — contact the clinic to confirm hours.

Website

https://www.tebra.com/care/gastroenterologists/hempstead-ny/

Services Offered

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Team

Kostas Sideridis — DO, gastroenterologist
Jaydeep Kadam — MD, gastroenterologist
Jeffrey Crespin — MD, gastroenterologist
Jeffrey M. Loria — MD, gastroenterologist
Albert M. Harary — MD, gastroenterologist
Gil I. Ascunce — MD, gastroenterologist

Insurance & Payment

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Languages Spoken

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

Zocdoc: 4.85 out of 5 (103 reviews)
Healthgrades: 3.3 out of 5 (13 ratings)
Tebra: 5.0 out of 5 (3 reviews)

Patients praise

High level of medical expertise and experience
Patient-focused care and willingness to go the extra mile
Effective treatment results with minimal discomfort

Common complaints

Long wait times
Office disorganization and perceived unprofessionalism (for some patients)

"Dr. Immanuel is highly experienced and knows his stuff! He has done colonoscopies on my husband and myself without any issues or fears of tearing. He also did a lazer procedure to remove multiple obstructions in my colon. I didn't even hurt the day after! Yes, wait times are long and his office is..."

— Healthgrades

"He was once a good doctor but now he is money-hungry, disorganized and unprofessional."

— Healthgrades

"I have no complaints about this office, Dr. Pearlman or the staff!"

— Zocdoc (regarding Dr. Theodore Perlman)

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