Quick answers
- Which hospitals does Allison Larson work at?
- Medicare's official clinician data lists Allison Larson at 5 hospitals: MedStar Franklin Square Medical Center, MedStar Georgetown University Hospital, MedStar Good Samaritan Hospital, MedStar Union Memorial Hospital and MedStar Washington Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Allison Larson see patients?
- Medicare's clinician data lists 4 practice locations, including Washington, DC and Baltimore, MD. Call before your visit to confirm the address.
- What is Allison Larson's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Allison Larson accept Medicare assignment?
- Yes. Medicare's clinician data says Allison Larson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Allison Larson?
- (202) 877-7000, as listed in official Medicare / NPI Registry data.
- What is Allison Larson's NPI number?
- 1265691398. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allison Larson works
Medicare's Facility Affiliation Data lists Allison Larson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Franklin Square Medical CenterRosedale, MD · Acute Care Hospital · CCN 210015
- MedStar Georgetown University HospitalWashington, DC · Acute Care Hospital · CCN 090004
- MedStar Good Samaritan HospitalBaltimore, MD · Acute Care Hospital · CCN 210056
- MedStar Union Memorial HospitalBaltimore, MD · Acute Care Hospital · CCN 210024
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Allison Larson is enrolled with Medicare (CMS data updated 2026-10-02).
- 110 Irving St NWWashington, DC 20010 (202) 877‑7000
- 3800 Reservoir Rd NWWashington, DC 20007 (202) 444‑2000
- 5601 Lloch Raven BlvdBaltimore, MD 21239 (443) 444‑8000
- 9000 Franklin Square DrBaltimore, MD 21237 (443) 777‑7000
Group practices
Medicare enrollment lists Allison Larson as a member of this group (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Washington
Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265691398 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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