Quick answers
- Which hospitals does Julia Y. Ahn work at?
- Medicare's official clinician data lists Julia Y. Ahn at 5 hospitals: MedStar Franklin Square Medical Center, MedStar Saint Mary's Hospital, MedStar Southern Maryland Hospital Center, 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 Julia Y. Ahn see patients?
- Medicare's clinician data lists 8 practice locations, including Waldorf, MD, Washington, DC and Bel Air, MD. Call before your visit to confirm the address.
- What is Julia Y. Ahn's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Julia Y. Ahn accept Medicare assignment?
- Yes. Medicare's clinician data says Julia Y. Ahn 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 Julia Y. Ahn?
- (301) 373-7900, as listed in official Medicare / NPI Registry data.
- What is Julia Y. Ahn's NPI number?
- 1700224755. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Julia Y. Ahn works
Medicare's Facility Affiliation Data lists Julia Y. Ahn 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 Saint Mary's HospitalLeonardtown, MD · Acute Care Hospital · CCN 210028
- MedStar Southern Maryland Hospital CenterClinton, MD · Acute Care Hospital · CCN 210062
- MedStar Union Memorial HospitalBaltimore, MD · Acute Care Hospital · CCN 210024
- MedStar Washington Hospital CenterWashington, DC · Acute Care Hospital · CCN 090011
Practice locations
Addresses where Julia Y. Ahn is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 10 Saint Patricks DrWaldorf, MD 20603 (301) 373‑7900
- 110 Irving St NWWashington, DC 20010 (202) 877‑7000
- 1120 20th St NWWashington, DC 20036 (202) 748‑8830
- 12 Medstar BlvdBel Air, MD 21015 (443) 625‑5430
- 201 E University PkwyBaltimore, MD 21218 (410) 554‑2000
Group practices
Medicare enrollment lists Julia Y. Ahn as a member of these groups (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
- MedStar Medical Group - Southern Maryland LLC245 clinicians in the group
- Physician Imaging of Washington Hospital Center LLC104 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Waldorf
Clinicians with the same Medicare primary specialty in Waldorf, MD — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Kansas City University Of Physicians And Surgeons |
| Graduation year | 2013 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700224755 |
| 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