ARUNACHALAM THENAPPAN MD
NPI 1275856445
Surgery - Pediatric Surgery in New Brunswick, NJ

Active since March 02, 2010PECOS Enrolled
125 PATERSON ST, NEW BRUNSWICK, NJ 08901(732) 235-8351 Get Directions Write a Review

NPPES record last updated: October 16, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Arunachalam Thenappan Md NPPES

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

ARUNACHALAM THENAPPAN MD (NPI 1275856445) is an individual pediatric surgery provider in New Brunswick, New Jersey, licensed in New Jersey (25MA10943000) and active in the NPI registry since March 2010. He is enrolled in Medicare PECOS and maintains a secondary practice location in Washington.

NPPES Registry Identity

NPI1275856445
Entity TypeIndividualMale
Primary Taxonomy2086S0120X
Provider Legal NameARUNACHALAM THENAPPANCredential: MD
Location Address125 PATERSON STNew Brunswick, NJ 08901-1962
Mailing AddressPo Box 37215Baltimore, MD 21297-3215 · (202) 476-5000
Sole ProprietorNo
Enumeration DateMarch 2, 2010
Last NPPES UpdateOctober 16, 2020
NPPES CertifiedOctober 16, 2020
✔ NPI 1275856445 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Pediatric SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0120X
Licenses✔ Licensed in NJ · 25MA10943000✔ Licensed in DC · MD039840
Definition
A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License 25MA10943000 (NJ), MD039840 (DC)
125 PATERSON ST, New Brunswick, NJ 08901

Secondary Practice Location 1

Location 1111 Michigan Ave NWWashington, DC 20010-2916 · Phone (202) 476-5000

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Arunachalam Thenappan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Arunachalam Thenappan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Surgery
125 PATERSON ST, SUITE 4100
New Brunswick, NJ 08901
  • Reassigned Medicare billing, New Jersey enrollment
  • 259 clinicians in this Medicare group

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

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Anesthesiology (Critical Care Medicine)
125 PATERSON ST
NEW BRUNSWICK, NJ 08901
Internal Medicine
125 PATERSON ST, SUITE 5200
NEW BRUNSWICK, NJ 08901
Internal Medicine (Rheumatology)
125 PATERSON ST, SUITE 5200A
NEW BRUNSWICK, NJ 08901
Physician Assistant (Surgical)
125 PATERSON ST, SUITE 4100
NEW BRUNSWICK, NJ 08901
Internal Medicine (Endocrinology, Diabetes & Metabolism)
125 PATERSON ST
NEW BRUNSWICK, NJ 08901
Obstetrics & Gynecology (Maternal & Fetal Medicine)
125 PATERSON ST
NEW BRUNSWICK, NJ 08901
Internal Medicine
125 PATERSON ST, ROOM 2330
NEW BRUNSWICK, NJ 08901
Internal Medicine
125 PATERSON ST, CLINICAL ACADEMIC BUILDING - SUITE 5100A
NEW BRUNSWICK, NJ 08901

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 Arunachalam Thenappan's NPI number?

The NPI number for Arunachalam Thenappan is 1275856445. It was assigned to this individual provider in the NPPES registry on March 2, 2010.

Where is Arunachalam Thenappan located?

Arunachalam Thenappan practices at 125 Paterson St, New Brunswick, NJ 08901. The listed phone number is (732) 235-8351.

What is Arunachalam Thenappan's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.

Is Arunachalam Thenappan enrolled in Medicare?

Yes. Arunachalam Thenappan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Arunachalam Thenappan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Arunachalam Thenappan reassigns Medicare benefits to Rutgers Health-Rwj Neurosurgery Faculty (New Brunswick, NJ). The 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 Arunachalam Thenappan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Arunachalam Thenappan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Arunachalam Thenappan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Arunachalam Thenappan was last updated on October 16, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.