1. Home
  2. Directory
  3. New York
  4. Bronx
  5. Internal Medicine
  6. NPI Profile

ISADORE P GUTWEIN MD & ROBERT A SABLE MD PC
NPI 1376620476
Internal Medicine - Gastroenterology in Bronx, NY

Active since November 01, 2006
3765 RIVERDALE AVE, SUITE #7, BRONX, NY 10463(718) 549-4267(718) 884-4885 Get Directions Write a Review

NPPES record last updated: March 5, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Isadore P Gutwein Md & Robert A Sable Md Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ISADORE P GUTWEIN MD & ROBERT A SABLE MD PC (NPI 1376620476) is a healthcare organization registered as a gastroenterology in Bronx, New York and active in the NPI registry since November 2006. The organization lists Isadore P Gutwein, President, as its authorized official.

NPPES Registry Identity

NPI1376620476
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameISADORE P GUTWEIN MD & ROBERT A SABLE MD PC
Location Address3765 RIVERDALE AVE, SUITE #7Bronx, NY 10463-1845
Mailing Address3765 Riverdale Ave, Suite #7Bronx, NY 10463-1845 · (718) 549-4267 · Fax (718) 884-4885
Phone(718) 549-4267
Fax(718) 884-4885
Organization SubpartNo
Authorized OfficialIsadore P GutweinPresident · (718) 549-4267
Enumeration DateNovember 1, 2006
Last NPPES UpdateMarch 5, 2013
✔ NPI 1376620476 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in NY · 121055
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
3765 RIVERDALE AVE, Bronx, NY 10463
Open in Google Maps ↗

Other Identifiers 3

Medicaid00631576NY
Medicare ID-Type UnspecifiedW07051NY
Other33D0136726NY · Clia

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Isadore P Gutwein Md & Robert A Sable Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Isadore P Gutwein MD & Robert A Sable MD PC, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 6 within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Isadore Gutwein, M.D.
Gastroenterology
NPI 1053306480
3765 RIVERDALE AVE SUITE #7
Bronx, NY 10463
(718) 549-4267
✔ PECOS✔ Accepts MedicareSame address
Jeremy Gutwein, MD, MS
Gastroenterology
NPI 1235279738
3765 RIVERDALE AVE SUITE #7
Bronx, NY 10463
(718) 543-3636
✔ PECOS✔ Accepts MedicareSame address
Michael Ader, M.D.
Gastroenterology
NPI 1760477830
3765 RIVERDALE AVE SUITE #7
Bronx, NY 10463
(718) 543-3636
✔ PECOSSame address
Robert Sable, M.D.
Gastroenterology
NPI 1487649554
3765 RIVERDALE AVE SUITE #7
Bronx, NY 10463
(718) 549-4267
✔ PECOSSame address
David Stein, MD
Gastroenterology
NPI 1285620237
3765 RIVERDALE AVE SUITE #7
Bronx, NY 10463
(718) 549-4267
✔ PECOS✔ Accepts MedicareSame address
Maria Sabatini, M.D.
Pathology
NPI 1598827107
1842 WILLIAMSBRIDGE RD
Bronx, NY 10461
(718) 828-0100
✔ PECOS✔ Accepts Medicare3.9 mi
Shawn Liu, M.D.
Pathology
NPI 1023338068
550 FIRST AVE NYU LANGONE MEDICAL CENTER
New York, NY 10016
(212) 263-5506
✔ PECOS✔ Accepts Medicare11 mi
Fangming Deng, M.D.
Pathology
NPI 1205072352
750 E ADAMS ST
Syracuse, NY 13210
(315) 464-5136
✔ PECOS188 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Isadore P Gutwein MD & Robert A Sable MD PC's NPI number?

The NPI number for Isadore P Gutwein MD & Robert A Sable MD PC is 1376620476. It was assigned to this organization in the NPPES registry on November 1, 2006.

Where is Isadore P Gutwein MD & Robert A Sable MD PC located?

Isadore P Gutwein MD & Robert A Sable MD PC is located at 3765 Riverdale Ave Suite #7, Bronx, NY 10463. The listed phone number is (718) 549-4267.

What is Isadore P Gutwein MD & Robert A Sable MD PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Isadore P Gutwein MD & Robert A Sable MD PC enrolled in Medicare?

Yes. Isadore P Gutwein MD & Robert A Sable MD PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Isadore P Gutwein MD & Robert A Sable MD PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 2 Medicare specialties reassign their Medicare billing to Isadore P Gutwein MD & Robert A Sable MD PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Gastroenterology (5) and Pathology (3). Of these, 5 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Isadore P Gutwein MD & Robert A Sable MD PC was last updated on March 5, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.