Mark S. Mason Jr., MD

Medicare activity in 2024

Official CMS public-use data for Mark S. Mason Jr., 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. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)111 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)63 services
3. Critical care, first 30-74 minutes (99291)54 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%
• Stroke or mini-stroke70%
• Arthritis58%
• Ischemic heart disease57%
• Depression42%

Hospitals where Mark S. Mason Jr. works

Medicare's Facility Affiliation Data lists Mark S. Mason Jr. 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.

• Sentara Careplex HospitalHampton, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490093
• Sentara Martha Jefferson HospitalCharlottesville, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490077

Practice locations

Addresses where Mark S. Mason Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 1646 Park Ridge DrCrozet, VA 22932 (434) 654‑2760
• 1646 Park Ridge Dr, Suite ACrozet, VA 22932 (434) 654‑5575
• 500 Martha Jefferson DrCharlottesville, VA 22911

Group practices

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

• Martha Jefferson Medical Group LLC195 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in Virginia →

Other neurologists in Virginia

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

• Uzoamaka Flake, MD
• Lydia Sharp, MD
• Camilo E. Fadul, MD
• Hibatullah M. Abu El-Haija, MD
• John C. Henry, MD
• Nicole A. Dietz
• Ewa M. Way, MD
• Monica Buckley, MD

All neurologists in Virginia →

Other clinicians in Martha Jefferson Medical Group LLC

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

• Gary S. Corder, PA
• Jessica L. Harlow, NP
• Brooke A. Bostic, MD
• John T. Watson, MD
• Scott M. Goldberg, MD
• David A. Calhoun

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