Colleen Gilstad, MD

Medicare activity in 2024

Official CMS public-use data for Colleen Gilstad, 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. Pathology examination of tissue using a microscope, intermediate complexity (88305)275 services
2. Blood bank physician services for cross match and/or evaluation and written report (86077)119 services
3. Blood bank physician services for investigation of transfusion reaction with written report (86078)14 services
4. Special stained specimen slides to examine tissue, initial procedure (88342)12 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%
• Arthritis52%
• Ischemic heart disease34%
• Diabetes30%
• Chronic kidney disease29%

Hospitals where Colleen Gilstad works

Medicare's Facility Affiliation Data lists Colleen Gilstad 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 Saint Mary's HospitalLeonardtown, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210028

Practice locations

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

• 25500 Point Lookout RdLeonardtown, MD 20650 (240) 434‑4088
• 3800 Reservoir Rd NWWashington, DC 20007 (202) 444‑2000
• 9000 Franklin Square DrBaltimore, MD 21237 (443) 777‑7000

Group practices

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

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

Specialties

• Pathologyprimary

Find other Pathology doctors in Maryland →

Other pathologists in Leonardtown

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

• Mary Sidawy, MD
• Jay Zeck, MD
• Yahia M. Tagouri, MD
• Moira Larsen, MD
• Yiannis Petros Dimopoulos, MD
• Jennifer Broussard, MD
• Mariana Berho, MD
• Margaret P. Holmes, MD

All pathologists in Leonardtown →

Other clinicians in MedStar Medical Group II LLC

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

• Alexandra L. Olsen, NP
• Camille Boustani, MD
• Vincent Carbone, DO
• Bradley W. Moatz, MD
• Jefferey Sabloff, MD
• Melissa Scalchunes, NP

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