Gastroenterology · Manhattan, NY

Every answer starts
with listening.

Board-certified GI care for GERD, IBD, polyp screening, and everything in between — explained in plain language before you leave the room.

4.9
861 verified patient reviews
Google4.9(312)
Healthgrades4.8(186)
Zocdoc4.9(274)
US News4.7(89)
Read 200+ Reviews

No referral required · Most insurance accepted · Same-week appointments

Dr. Elena Marsh, board-certified gastroenterologist in white coat, composed expression against neutral linen-gray background

Your Physician

Dr. Elena Marsh, MD

Board-Certified Gastroenterologist

4.9 · 861 reviews
Patient Voices
GERD
I'd been ignoring the burning for almost eight years. Dr. Marsh sat with me for forty minutes, drew a diagram of my esophagus on a notepad, and by the time I left I finally understood what was happening inside my own body.
Michael T., 44
Step 1 of 5
What Actually Happens
01

Initial Consultation

You'll sit down with Dr. Marsh — not a PA, not a resident — for a full 45-minute intake. She reads your labs before you arrive. Bring your questions; she keeps time for all of them.

02

Prep & Instructions

03

Procedure Day

04

Pathology Review

05

Follow-up Plan

Conditions We Treat

Whatever brought you here,
we've seen it before.

From the routine colonoscopy to the complicated IBD flare — every patient gets the same unhurried attention.

GERD & Acid Reflux

Most Common

Persistent heartburn, regurgitation, or chest discomfort that's been there longer than it should be. We find the root cause, not just the antacid.

60M Americans affected

Colonoscopy & Polyp Screening

Preventive

Recommended from age 45. We make the prep understandable and the procedure unhurried.

90% of colon cancers preventable with screening

Crohn's Disease & IBD

Specialty Focus

Biologic therapy, infusion therapy, and a care plan that adapts as your disease does. We draw diagrams until you understand.

3M IBD patients in the US

Barrett's Esophagus

Surveillance

Regular endoscopic surveillance with clear timelines so you always know when the next check is and why.

Detected early, highly manageable

IBS & Functional GI

Lifestyle + Clinical

Abdominal pain, bloating, and unpredictable bowel patterns that have been dismissed before. We take them seriously.

45M Americans live with IBS
Free Symptom Screener

Check Your
Gut Health

Five questions. Two minutes. A personalized next step from Dr. Marsh's team — not a generic recommendation engine.

A personalized next-step recommendation
Suggested appointment timing based on your symptoms
Prep materials emailed before your first visit
No phone call required to get started
Patient avatarPatient avatarPatient avatar
847 patients used this screener

"I finally knew what questions to ask." — Recurring theme in post-screener feedback

Ready to start?

Five short questions about your symptoms. Dr. Marsh's team reviews every screener personally before sending your recommendation.

No account required · Takes ~2 minutes

Verified Patient Reviews

861 patients.
One consistent theme.

Verified reviews from Google, Healthgrades, and Zocdoc — not curated, not cherry-picked.

Google
4.9/ 312 reviews
Healthgrades
4.8/ 186 reviews
Zocdoc
4.9/ 274 reviews
US News
4.7/ 89 reviews
Barrett's Esophagus"Dr. Marsh called me herself the evening my biopsy came back...."
Crohn's Disease"I've had GI issues for a decade and seen four different doct..."
Polyp Screening"The colonoscopy prep guide was the clearest medical document..."
Pediatric IBD"My teenage son was just diagnosed with IBD. Dr. Marsh sat wi..."
GERD"I've been ignoring acid reflux for eight years. Within one v..."
IBS"Professional, patient, and thorough. The follow-up plan was ..."
Barrett's Esophagus"Dr. Marsh called me herself the evening my biopsy came back...."
Crohn's Disease"I've had GI issues for a decade and seen four different doct..."
Polyp Screening"The colonoscopy prep guide was the clearest medical document..."
Pediatric IBD"My teenage son was just diagnosed with IBD. Dr. Marsh sat wi..."
GERD"I've been ignoring acid reflux for eight years. Within one v..."
IBS"Professional, patient, and thorough. The follow-up plan was ..."
Google VerifiedJan 2026
"Dr. Marsh called me herself the evening my biopsy came back. She spent twenty minutes explaining every word of the report. I didn't feel like a chart number."
C
Carolyn B.
Barrett's Esophagus
Healthgrades VerifiedDec 2025
"I've had GI issues for a decade and seen four different doctors. This was the first time someone actually drew a diagram and showed me what was happening. I cried in the office."
T
Thomas W.
Crohn's Disease
Zocdoc VerifiedFeb 2026
"The colonoscopy prep guide was the clearest medical document I've ever received. Each step had a plain-language explanation. Zero anxiety going in."
R
Renata K.
Polyp Screening
Google VerifiedJan 2026
"My teenage son was just diagnosed with IBD. Dr. Marsh sat with us for over an hour, drew diagrams, answered every question we had. We left with a plan, not just fear."
J
James & Lisa F.
Pediatric IBD
Healthgrades VerifiedNov 2025
"I've been ignoring acid reflux for eight years. Within one visit I had a diagnosis, a treatment plan, and for the first time I understood the connection between my diet and symptoms."
M
Marcus D.
GERD
Zocdoc VerifiedJan 2026
"Professional, patient, and thorough. The follow-up plan was emailed before I got home. Every medication, every dietary change, every flag to watch for — organized and clear."
S
Sandra M.
IBS

These are 6 of 861 verified reviews. Read the full archive on any platform.