Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Robert Allen Weiss, MD

Individual provider Gastroenterology Physician · NPI 1841213014

Dr. Robert Allen Weiss, MD practises Gastroenterology in New York, New York. Graduated from Icahn School of Medicine at Mount Sinai in 1983, 43 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 324-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
43
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

108 E 96th St E Ste
New York, NY 10128-6217
Phone: (212) 473-4100
Fax: (212) 473-4733
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 160839 (NY)

Record details

NPI number1841213014
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 26, 2006
Last updated in NPPESApril 29, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1983 (43 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 324 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 1–10 times
Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Icahn School of Medicine at Mount Sinai

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 324 clinicians in the practice; 12 are shown here.

Other providers in New York