Dr. Thomas Wallach, MD
Pediatric Gastroenterology (Pediatric Gastroenterology Physician)
At a glance
- In the NPI registry since
- 2012
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2012Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Pediatric Gastroenterology Physician primary
NY license 272557 -
Pediatrics Physician
NY license 272557
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Payments from drug and device companies
In 2025, 3 companies reported 52 payments worth $116,783 in total to this clinician.
| Genzyme Corporation | $81,178 |
|---|---|
| Regeneron Healthcare Solutions, Inc. | $35,455 |
| Ipsen Biopharmaceuticals, Inc | $150 |
| Compensation for services other than consulting (speaking, faculty) | $101,101 |
|---|---|
| Travel and Lodging | $14,112 |
| Food and Beverage | $1,570 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. Apr 29, 2025 | Compensation for services other than consulting (speaking, faculty) | $10,725 |
| Genzyme Corporation Feb 20, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $9,009 |
| Genzyme Corporation Apr 15, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $9,009 |
| Regeneron Healthcare Solutions, Inc. Jan 16, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · IMMUNOLOGY AND INFLAMMATION | $9,009 |
| Genzyme Corporation Jul 24, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $9,009 |
| Regeneron Healthcare Solutions, Inc. Jun 13, 2025 | Compensation for services other than consulting (speaking, faculty) | $9,009 |
| Genzyme Corporation Mar 13, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $7,293 |
| Genzyme Corporation Apr 9, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $7,293 |
| Genzyme Corporation Sep 11, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $7,293 |
| Genzyme Corporation Nov 13, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $5,577 |
All 36 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Genzyme Corporation Nov 13, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $5,577 |
| Genzyme Corporation Nov 13, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Morristown, NJ · in-kind | $904 |
| Genzyme Corporation Oct 6, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $5,577 |
| Genzyme Corporation Oct 6, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Islip, NY · in-kind | $830 |
| Genzyme Corporation Sep 11, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $7,293 |
| Genzyme Corporation Sep 11, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Eatontown, NJ · in-kind | $941 |
| Genzyme Corporation Aug 18, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $3,003 |
| Genzyme Corporation Jul 24, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $9,009 |
| Genzyme Corporation Jul 24, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Columbia, MD · in-kind | $1,572 |
| Regeneron Healthcare Solutions, Inc. Jun 13, 2025 | Compensation for services other than consulting (speaking, faculty) | $9,009 |
| Regeneron Healthcare Solutions, Inc. Jun 5, 2025 | Travel and Lodging travel to WASHINGTON, DC · in-kind | $416 |
| Regeneron Healthcare Solutions, Inc. May 28, 2025 | Travel and Lodging travel to SALT LAKE CITY, UT · in-kind | $139 |
| Regeneron Healthcare Solutions, Inc. May 14, 2025 | Travel and Lodging travel to WASHINGTON, DC · in-kind | $473 |
| Regeneron Healthcare Solutions, Inc. Apr 29, 2025 | Compensation for services other than consulting (speaking, faculty) | $10,725 |
| Regeneron Healthcare Solutions, Inc. Apr 26, 2025 | Travel and Lodging travel to SALT LAKE CITY, UT · in-kind | $720 |
| Regeneron Healthcare Solutions, Inc. Apr 26, 2025 | Travel and Lodging travel to SALT LAKE CITY, UT · in-kind | $175 |
| Regeneron Healthcare Solutions, Inc. Apr 26, 2025 | Travel and Lodging travel to SALT LAKE CITY, UT · in-kind | $172 |
| Genzyme Corporation Apr 15, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $9,009 |
| Genzyme Corporation Apr 15, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Boston, MA | $354 |
| Genzyme Corporation Apr 15, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Boston, MA · in-kind | $312 |
| Genzyme Corporation Apr 15, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Boston, MA | $75.99 |
| Genzyme Corporation Apr 9, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $7,293 |
| Genzyme Corporation Apr 9, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Frederick, MD · in-kind | $2,016 |
| Genzyme Corporation Apr 9, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Frederick, MD · in-kind | $327 |
| Regeneron Healthcare Solutions, Inc. Mar 25, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · IMMUNOLOGY AND INFLAMMATION | $2,431 |
| Genzyme Corporation Mar 13, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $7,293 |
| Genzyme Corporation Mar 13, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Fishkill, NY · in-kind | $966 |
| Regeneron Healthcare Solutions, Inc. Mar 12, 2025 | Travel and Lodging travel to SALT LAKE CITY, UT · in-kind | $190 |
| Regeneron Healthcare Solutions, Inc. Feb 22, 2025 | Travel and Lodging travel to SALT LAKE CITY, UT · in-kind | $482 |
| Genzyme Corporation Feb 20, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $9,009 |
| Genzyme Corporation Feb 20, 2025 | Travel and Lodging DUPIXENT · Immunology · travel to Columbia, MD · in-kind | $1,734 |
| Genzyme Corporation Feb 12, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $3,861 |
| Regeneron Healthcare Solutions, Inc. Jan 28, 2025 | Travel and Lodging DUPIXENT · IMMUNOLOGY AND INFLAMMATION · travel to LOUISVILLE, KY · in-kind | $142 |
| Regeneron Healthcare Solutions, Inc. Jan 16, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · IMMUNOLOGY AND INFLAMMATION | $9,009 |
| Genzyme Corporation Jan 14, 2025 | Compensation for services other than consulting (speaking, faculty) DUPIXENT · Immunology | $3,003 |
| Regeneron Healthcare Solutions, Inc. Jan 14, 2025 | Travel and Lodging DUPIXENT · IMMUNOLOGY AND INFLAMMATION · travel to ATLANTIC CITY, NJ · in-kind | $1,171 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 2 industry-funded studies in 2025, from 1 companies. The companies reported $19,576 in research payments for these studies, mostly to the institutions running them.
- Study to Assess Safety and Efficacy of Tenapanor for Treatment of IBS-C in Pediatric Patients 12 to Less Than 18 Years
Ardelyx, Inc. · Completed · NCT05643534 - An open-label long-term safety study of tenapanor for the treatment of irritable bowel syndrome with constipation (ibs-c) in pediatric patients 6 to less than 18 years old
Ardelyx, Inc.
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.