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NICHOLAS TRIANTAFILLOU MD PC
NPI 1477711976
Internal Medicine - Gastroenterology in Bayside, NY

Active since May 30, 2008
21305 39TH AVE, BAYSIDE, NY 11361(718) 224-1378(718) 224-1758 Get Directions Write a Review

NPPES record last updated: June 24, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Nicholas Triantafillou Md Pc NPPES

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

NICHOLAS TRIANTAFILLOU MD PC (NPI 1477711976) is a healthcare organization registered as a gastroenterology in Bayside, New York and active in the NPI registry since May 2008. The organization lists Jillian Asch, Manger, as its authorized official.

NPPES Registry Identity

NPI1477711976
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameNICHOLAS TRIANTAFILLOU MD PC
Location Address21305 39TH AVEBayside, NY 11361-2044
Mailing Address21305 39th AveBayside, NY 11361-2044 · (718) 224-1378 · Fax (718) 224-1758
Phone(718) 224-1378
Fax(718) 224-1758
Organization SubpartNo
Authorized OfficialJillian AschManger · (516) 825-0221
Enumeration DateMay 30, 2008
Last NPPES UpdateJune 24, 2009
✔ NPI 1477711976 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 · 199020
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.
21305 39TH AVE, Bayside, NY 11361
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Other Identifiers 3

Medicare PIN03966
Medicare UPING61121
Medicare PIN29N041

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nicholas Triantafillou Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateNew YorkEnrollment IDO20120221000646Non-DME Part B · Clinic/Group PracticeDue dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Nicholas Triantafillou MD PC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Nicholas Triantafillou, MD
Anesthesiology
NPI 1144212853
21305 39TH AVE
Bayside, NY 11361
(718) 224-1378
✔ PECOS✔ Accepts MedicareSame address
Maria Sabatini, M.D.
Pathology
NPI 1598827107
1842 WILLIAMSBRIDGE RD
Bronx, NY 10461
(718) 828-0100
✔ PECOS✔ Accepts Medicare7.3 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 Nicholas Triantafillou MD PC's NPI number?

The NPI number for Nicholas Triantafillou MD PC is 1477711976. It was assigned to this organization in the NPPES registry on May 30, 2008.

Where is Nicholas Triantafillou MD PC located?

Nicholas Triantafillou MD PC is located at 21305 39th Ave, Bayside, NY 11361. The listed phone number is (718) 224-1378.

What is Nicholas Triantafillou MD PC's specialty?

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

Is Nicholas Triantafillou MD PC enrolled in Medicare?

Yes. Nicholas Triantafillou MD PC is registered in the Medicare PECOS enrollment system.

When is Nicholas Triantafillou MD PC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (New York, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Nicholas Triantafillou MD PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Nicholas Triantafillou MD PC, in Anesthesiology and Pathology. 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. Of these, 1 practice at this address and 2 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 Nicholas Triantafillou MD PC was last updated on June 24, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.