Quick answers
- Does Elizabeth Gannon accept Medicare assignment?
- Yes. Medicare's clinician data says Elizabeth Gannon accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Elizabeth Gannon see?
- In 2024, CMS data shows 54 Original Medicare patients and 346 services for Elizabeth Gannon. This counts Original Medicare only and measures volume, not quality.
- What is Elizabeth Gannon's NPI number?
- 1245433572. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Elizabeth Gannon, 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.
| Original Medicare patients | 54 |
|---|---|
| Services billed to Medicare | 346 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)127 services
- Insertion of needle into vein for collection of blood sample (36415)62 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)26 services
- 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)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 cholesterol70%
- High blood pressure54%
- Arthritis44%
- Anxiety28%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%
- Diabetes20%
Practice locations
Addresses where Elizabeth Gannon is enrolled with Medicare (CMS data updated October 2, 2026).
- 1001 G St NW, Suite 200eWashington, DC 20001 (202) 660‑0005
- 11930 Democracy DrReston, VA 20190 (888) 663‑6331
- 1775 Tysons Blvd, Suite 300Tysons, VA 22102 (202) 627‑1904
- 2987 District Ave, Suite 120Fairfax, VA 22031 (202) 627‑1904
- 601 New Jersey Ave NW, Suite 200Washington, DC 20001 (202) 660‑0005
Group practices
Medicare enrollment lists Elizabeth Gannon as a member of this group (CMS data updated October 2, 2026).
- One MedStar Primary Care LLC140 clinicians in the group
Specialties
- Family Practiceprimary
Find other Family Practice doctors in District of Columbia →
Other family doctors in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Other clinicians in One MedStar Primary Care LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1245433572 |
| Corrections | Report an error or suggest an update → |
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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians