Ravneet Grewal, MD

Medicare activity in 2024

Official CMS public-use data for Ravneet 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. Injection, iron sucrose, 1 mg (J1756)6,700 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)947 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)553 services
4. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)515 services
5. Insertion of needle into vein for collection of blood sample (36415)269 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 cholesterol75%
• High blood pressure73%
• Arthritis58%
• Chronic kidney disease34%
• Ischemic heart disease30%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)28%

Hospitals where Ravneet Grewal works

Medicare's Facility Affiliation Data lists Ravneet 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.

• Inova Loudoun HospitalLeesburg, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490043
• Reston Hospital CenterReston, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490107

Practice locations

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

• 1860 Town Ctr Dr, Suite 260Reston, VA 20190 (703) 794‑4400
• 19415 Deerfield Ave, Suite 107Lansdowne, VA 20176 (703) 729‑6030

Specialties

• Hematology/Oncologyprimary

Find other Hematology/Oncology doctors in Virginia →

Other hematologist-oncologists in Reston

Clinicians with the same Medicare primary specialty in Reston, VA — not a recommendation.

• Amitabha Sarma, MD
• Mei-Hwa R. Firestone, MD
• Timothy A. McCarthy, MD
• Christina E. Brzezniak, DO
• Kevin Diasti, MD
• Shruti R. Tiwari, MD
• Syed S. Ali, MD
• Chao Yin, MD

All hematologist-oncologists in Reston →

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