Lorenzo Demarchi, MD

Medicare activity in 2024

Official CMS public-use data for Lorenzo Demarchi, 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. Insertion of artery tube for blood sampling or infusion through skin (36620)55 services
2. Ultrasonic guidance for blood vessel access (76937)25 services
3. Anesthesia for extensive surgery on spine (00670)23 services
4. Anesthesia for other procedure on upper abdomen (00790)19 services
5. Anesthesia for kidney transplant (00868)16 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%
• Arthritis60%
• Diabetes45%
• Chronic kidney disease41%
• Ischemic heart disease38%

Hospitals where Lorenzo Demarchi works

Medicare's Facility Affiliation Data lists Lorenzo Demarchi 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.

• MedStar Georgetown University HospitalWashington, DC · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 090004
• MedStar Harbor HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 210034

Practice locations

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

• 3001 S Hanover StBaltimore, MD 21225 (410) 350‑3200
• 3800 Reservoir Rd NWWashington, DC 20007 (202) 444‑2000

Group practices

Medicare enrollment lists Lorenzo Demarchi as a member of this group (CMS data updated October 2, 2026).

• MedStar Medical Group II LLC3,767 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Maryland →

Other anesthesiologists in Baltimore

Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.

• Mary B. Brady, MD
• Chengshui Zhao, MD
• Christopher Parrino, MD
• Orrin Belden, MD
• Todd Dorman, MD
• John K. Papanikos, MD
• Dexter B. Bartholomew, MD
• Erin Treacy, MD

All anesthesiologists in Baltimore →

Other clinicians in MedStar Medical Group II LLC

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

• Toluwalashe Davies, MD
• Laurel Damsel, CSW
• Parvaneh Vaziri, MD
• Shannon P. Burton, NP
• Makayla Dudley, PA
• Kaylee Purpura, MD

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