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

Internal Medicine

Gagan S. Chadha, MD

Works at hospitals in Lafayette, IN · Rensselaer, IN · Monticello, IN · Indiana

Summary

Dr. Gagan S. Chadha, MD is an internal medicine doctor at 166 Sagamore Pkwy W, Garan Chadha MD, West Lafayette, IN 47906. Phone: (765) 449-2458. Accepts Medicare assignment. In 2024, Gagan S. Chadha had 342 Original Medicare patients and 2,122 services. NPI 1568430874. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Gagan S. Chadha, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Gagan S. Chadha accept Medicare assignment?
Yes. Medicare's clinician data says Gagan S. Chadha accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Gagan S. Chadha see?
In 2024, CMS data shows 342 Original Medicare patients and 2,122 services for Gagan S. Chadha. This counts Original Medicare only and measures volume, not quality.
What is Gagan S. Chadha's NPI number?
1568430874. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Gagan S. Chadha, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients342
Services billed to Medicare2,122
Different services or procedures38
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)824 services
  2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)287 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)227 services
  4. Annual depression screening, 5 to 15 minutes (G0444)111 services
  5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)109 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis50%
  • Diabetes30%
  • Anxiety29%
  • Ischemic heart disease27%

Hospitals where Gagan S. Chadha works

Medicare's Facility Affiliation Data lists Gagan S. Chadha at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Gagan S. Chadha is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Gagan S. Chadha as a member of this group (CMS data updated October 2, 2026).

  • Unity Healthcare LLC64 clinicians in the group

Specialties

Find other Internal Medicine doctors in Indiana →

Other internal medicine doctors in Indiana

Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.

All internal medicine doctors in Indiana →

Other clinicians in Unity Healthcare LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1992 (34 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1568430874
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians