Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Tharunjan Kailayanathan, MD

Works at hospitals in Hackettstown, NJ · Newton, NJ · New Jersey

Summary

Tharunjan Kailayanathan, MD (Internal Medicine) is listed by Medicare at 2 hospitals in Hackettstown, NJ and Newton, NJ. NPI 1861020182. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Tharunjan Kailayanathan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
13Years since medical school (graduated 2013)
MaleGender (as listed)
Practice Associates Medical GroupGroup practice

Quick answers

Which hospitals does Tharunjan Kailayanathan work at?
Medicare's official clinician data lists Tharunjan Kailayanathan at 2 hospitals: Ahs Hospital Corp and Newton Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Tharunjan Kailayanathan see patients?
Medicare's clinician data lists 1 practice location in Hackettstown, NJ. Call before your visit to confirm the address.
What is Tharunjan Kailayanathan's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Tharunjan Kailayanathan accept Medicare assignment?
Yes. Medicare's clinician data says Tharunjan Kailayanathan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Tharunjan Kailayanathan?
(908) 441-1161, as listed in official Medicare / NPI Registry data.
What is Tharunjan Kailayanathan's NPI number?
1861020182. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Tharunjan Kailayanathan works

Medicare's Facility Affiliation Data lists Tharunjan Kailayanathan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Tharunjan Kailayanathan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Tharunjan Kailayanathan as a member of this group (CMS data updated 2026-10-02).

  • Practice Associates Medical Group1,408 clinicians in the group

Specialties

Find other Internal Medicine doctors in New Jersey →

Other internal medicine doctors in Hackettstown

Clinicians with the same Medicare primary specialty in Hackettstown, NJ — not a recommendation.

All internal medicine doctors in Hackettstown →

Clinician information

CredentialMD
Graduation year2013
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1861020182
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians