Marichu A. Matas, MD

Medicare activity in 2024

Official CMS public-use data for Marichu A. Matas, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)858 services
2. Hospital discharge day management, more than 30 minutes (99239)194 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)93 services
4. Critical care, first 30-74 minutes (99291)85 services
5. Advance care planning, first 30 minutes (99497)24 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%
• Diabetes51%
• Chronic kidney disease50%
• Arthritis49%
• Ischemic heart disease45%

Hospitals where Marichu A. Matas works

Medicare's Facility Affiliation Data lists Marichu A. Matas 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.

• Holy Cross HospitalSilver Spring, MD · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 210004

Practice locations

Addresses where Marichu A. Matas is enrolled with Medicare (CMS data updated October 2, 2026).

• 1500 Forest Glen RdSilver Spring, MD 20910 (301) 754‑7000
• 19801 Observation DrGermantown, MD 20876 (301) 557‑5928

Group practices

Medicare enrollment lists Marichu A. Matas as a member of this group (CMS data updated October 2, 2026).

• Galen Inpatient Physicians PC1,077 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Maryland →

Other hospitalists in Silver Spring

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

• Swati Singh, MD
• Samridhi S. Patel, MD
• Lakmal Ekanayake, DO
• Getachew K. Mengistu, MD
• Senyi Benti, MD
• Maria P. Villanueva, MD
• Nadia V. Kovalchuk, MD
• Margaux Schifter, DO

All hospitalists in Silver Spring →

Other clinicians in Galen Inpatient Physicians PC

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

• Elizaveta Shostakovich, MD
• Reem Alhashemi, MD
• Priscilla Navarro, MD
• Sean Kennedy, DO
• Armen H. Bedrosian, MD
• Andrea Nguyen, 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