Harpreet S. Grewal, MD

Medicare activity in 2024

Official CMS public-use data for Harpreet S. Grewal, 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.

Most frequent services

1. Ultrasound of heart with probe in esophagus, with report (93312)85 services
2. Ultrasound of heart blood flow, valves and chambers (93320)84 services
3. Ultrasound of heart with color-depicted blood flow, rate and valve function (93325)82 services
4. Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)77 services
5. Insertion of artery tube for blood sampling or infusion through skin (36620)60 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%
• Atrial fibrillation75%
• Ischemic heart disease58%
• Arthritis53%
• Heart failure50%

Hospitals where Harpreet S. Grewal works

Medicare's Facility Affiliation Data lists Harpreet S. Grewal 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.

• Banner Boswell Medical CenterSun City, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030061

Practice locations

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

• 10401 W Thunderbird BlvdSun City, AZ 85351 (623) 832‑4000

Group practices

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

• Advanced Cardiac Anesthesia PLLC12 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Arizona →

Other anesthesiologists in Sun City

Clinicians with the same Medicare primary specialty in Sun City, AZ — not a recommendation.

• Brigitte Flanagan, DO
• Robert Schwartzstein, MD
• Raymond S. Nierva, MD
• Jose A. Gozar Jr., MD
• Michael Suleiman, MD
• Ramon Soriano, MD
• Amin Alishahi, MD
• Jose A. Matibag, MD

All anesthesiologists in Sun City →

Other clinicians in Advanced Cardiac Anesthesia PLLC

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

• Lindsey L. Smith, CNA
• Mohamad R. Kharrazi, MD
• Janice J. Miiller, CNA
• Babak Tehranchi, DO
• Aaron A. Morrow, CNA

Clinician information

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