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Hospitalist

Gagandeep S. Sandhu, MD

Works at hospitals in Waukesha, WI · Wisconsin

Summary

Dr. Gagandeep S. Sandhu, MD is a hospitalist at 725 American Ave, Waukesha, WI 53188. Phone: (262) 928-5400. May accept Medicare assignment. In 2024, Gagandeep S. Sandhu had 204 Original Medicare patients and 627 services. NPI 1265872857. 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.

  • Specialty: Hospitalist
  • Address: 725 American Ave, Waukesha, WI 53188 · Directions
  • Phone: (262) 928‑5400
  • Medicare: May accept Medicare assignment
  • Hospital: Waukesha Memorial Hospital
  • Group practice: Apogee Medical Group Waukesha SC
  • Medical school: graduated 2009 (17 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Gagandeep S. Sandhu, 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 Gagandeep S. Sandhu accept Medicare assignment?
Medicare's clinician data says Gagandeep S. Sandhu may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Gagandeep S. Sandhu see?
In 2024, CMS data shows 204 Original Medicare patients and 627 services for Gagandeep S. Sandhu. This counts Original Medicare only and measures volume, not quality.
What is Gagandeep S. Sandhu's NPI number?
1265872857. 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 Gagandeep S. Sandhu, 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 patients204
Services billed to Medicare627
Different services or procedures10
Participating Medicare providerYes
Average age of these patients79

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)382 services
  2. Hospital discharge day management, more than 30 minutes (99239)114 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)56 services
  4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)53 services
  5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)11 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%
  • Chronic kidney disease55%
  • Ischemic heart disease52%
  • Arthritis51%
  • Heart failure47%

Hospitals where Gagandeep S. Sandhu works

Medicare's Facility Affiliation Data lists Gagandeep S. Sandhu 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 Gagandeep S. Sandhu is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Apogee Medical Group Waukesha SC43 clinicians in the group

Specialties

Find other Hospitalist doctors in Wisconsin →

Other hospitalists in Waukesha

Clinicians with the same Medicare primary specialty in Waukesha, WI — not a recommendation.

All hospitalists in Waukesha →

Other clinicians in Apogee Medical Group Waukesha SC

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

Clinician information

CredentialMD
Graduation year2009 (17 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1265872857
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