Marion J. Colburn, MD

Medicare activity in 2024

Official CMS public-use data for Marion J. Colburn, 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. Emergency department visit with high level of medical decision making (99285)313 services
2. Critical care, first 30-74 minutes (99291)218 services
3. Emergency department visit with moderate level of medical decision making (99284)99 services
4. Emergency department visit with low level of medical decision making (99283)20 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%
• Arthritis61%
• Diabetes44%
• Ischemic heart disease44%
• Anxiety40%

Hospitals where Marion J. Colburn works

Medicare's Facility Affiliation Data lists Marion J. Colburn 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.

• Calverthealth Medical CenterPrince Frederick, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210039
• University of MD Shore Medical Center at EastonEaston, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210037

Practice locations

Addresses where Marion J. Colburn is enrolled with Medicare (CMS data updated October 2, 2026).

• 100 Hospital RdPrince Frederick, MD 20678 (410) 535‑8344

Group practices

Medicare enrollment lists Marion J. Colburn as a member of this group (CMS data updated October 2, 2026).

• Emergency Medicine Associates P.A., P.C.714 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Maryland →

Other emergency medicine doctors in Prince Frederick

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

• Chiemeke Nwabueze, MD
• Cameron M. Cushing, MD
• Jennifer Hatto, DO
• Puneet Chopra, MD
• Jordan Rogers, MD
• John Peters, MD
• Katherine L. Biggs, DO
• Ronald L. Valencia, MD

All emergency medicine doctors in Prince Frederick →

Other clinicians in Emergency Medicine Associates P.A., P.C.

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

• Paul J. Tesoriere, MD
• Mustafa M. Alaska, MD
• Gopal Aggarwal, MD
• Grant F. Chernoby, MD
• Muhammad S. Anil, MD
• Rudolph Jenkins Iii, PA

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