Quick answers
- Which hospitals does Harry Quon work at?
- Medicare's official clinician data lists Harry Quon at 1 hospital: The Johns Hopkins Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Harry Quon see patients?
- Medicare's clinician data lists 2 practice locations, including Baltimore, MD and Middle River, MD. Call before your visit to confirm the address.
- What is Harry Quon's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Harry Quon accept Medicare assignment?
- Medicare's clinician data says Harry Quon may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Harry Quon?
- (410) 550-0100, as listed in official Medicare / NPI Registry data.
- What is Harry Quon's NPI number?
- 1184654253. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Harry Quon works
Medicare's Facility Affiliation Data lists Harry Quon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
Practice locations
Addresses where Harry Quon is enrolled with Medicare (CMS data updated 2026-10-02).
- 4940 Eastern AveBaltimore, MD 21224 (410) 550‑0100
- 6201 Greenleigh AveMiddle River, MD 21220
Group practices
Medicare enrollment lists Harry Quon as a member of these groups (CMS data updated 2026-10-02).
- Johns Hopkins University2,909 clinicians in the group
- Johns Hopkins University713 clinicians in the group
- Johns Hopkins University197 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1184654253 |
| 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