Colleen Christmas, MD

Medicare activity in 2024

Official CMS public-use data for Colleen Christmas, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)182 services
2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)119 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)115 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)89 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)64 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 cholesterol73%
• Arthritis56%
• Diabetes37%
• Ischemic heart disease35%
• Depression34%

Hospitals where Colleen Christmas works

Medicare's Facility Affiliation Data lists Colleen Christmas 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.

• Johns Hopkins Bayview Medical CenterBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210029
• The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210009

Practice locations

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

• 4940 Eastern AveBaltimore, MD 21224
• 5501 Hopkins Bayview CirBaltimore, MD 21224
• 5505 Hopkins Bayview CirBaltimore, MD 21224
• 5601 Lloch Raven BlvdBaltimore, MD 21239 (443) 444‑4714
• 601 N Caroline StBaltimore, MD 21287

Group practices

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

• Johns Hopkins University2,909 clinicians in the group

Specialties

• Internal Medicineprimary
• Geriatric Medicinealso

Find other Internal Medicine doctors in Maryland →

Other internal medicine doctors in Baltimore

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

• Janak V. Gopal, MD
• Micaela Kristina T. Paz, MD
• Vinshi Khan, MD
• Mariam S. Philip, MD
• Stephanie Deloach, MD
• Barbara L. Sanico, MD
• Raghunandan Ghimire, MD
• Magdalena K. Starban, MD

All internal medicine doctors in Baltimore →

Other clinicians in Johns Hopkins University

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

• Lisa Jacobs, MD
• Sara Smith, MD
• Maria Fabre, MD
• Michael Polydefkis, MD
• Omonike Akinleye, NP
• Licia Pacheco-Luna, 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