Mei-Hwa R. Firestone, MD

Medicare activity in 2024

Official CMS public-use data for Mei-Hwa R. Firestone, 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, denosumab, 1 mg (J0897)9,960 services
2. Injection, ferric derisomaltose, 10 mg (J1437)2,800 services
3. Injection, dexamethasone sodium phosphate, 1 mg (J1100)1,875 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)612 services
5. Injection of additional new drug or substance into vein (96375)589 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 cholesterol74%
• High blood pressure71%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)61%
• Arthritis47%
• Osteoporosis31%
• Anxiety21%

Hospitals where Mei-Hwa R. Firestone works

Medicare's Facility Affiliation Data lists Mei-Hwa R. Firestone 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 Fairfax HospitalFalls Church, VA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 490063
• 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 Mei-Hwa R. Firestone is enrolled with Medicare (CMS data updated October 2, 2026).

• 1860 Town Ctr Dr, Suite 120Reston, VA 20190 (703) 656‑9805
• 19500 Sandridge Way, Suite 450Leesburg, VA 20176 (703) 737‑6010

Group practices

Medicare enrollment lists Mei-Hwa R. Firestone as a member of this group (CMS data updated October 2, 2026).

• Loudoun Medical Group, PC271 clinicians in the group

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.

• Timothy A. McCarthy, MD
• Christina E. Brzezniak, DO
• Kevin Diasti, MD
• Shruti R. Tiwari, MD
• Syed S. Ali, MD
• Chao Yin, MD
• Ravneet Grewal, MD
• Amitabha Sarma, MD

All hematologist-oncologists in Reston →

Other clinicians in Loudoun Medical Group, PC

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

• Sam Mark, DPM
• Karan Lotfi, MD
• Rachel A. Colquitt, NP
• Van T. Ha, MD
• Jonathan D. Charen, MD
• Ricardo Ferreira Lopez

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