Quick answers
- Which hospitals does Timothy McMahon work at?
- Medicare's official clinician data lists Timothy McMahon at 5 hospitals: Johns Hopkins Bayview Medical Center, Meritus Medical Center, Northwest Hospital Center, The Johns Hopkins Hospital and Tidalhealth Peninsula Regional, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy McMahon see patients?
- Medicare's clinician data lists 10 practice locations, including Lutherville, MD, Columbia, MD and Baltimore, MD. Call before your visit to confirm the address.
- What is Timothy McMahon's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Timothy McMahon accept Medicare assignment?
- Medicare's clinician data says Timothy McMahon 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 Timothy McMahon?
- (410) 955-6108, as listed in official Medicare / NPI Registry data.
- What is Timothy McMahon's NPI number?
- 1467913442. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy McMahon works
Medicare's Facility Affiliation Data lists Timothy McMahon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Johns Hopkins Bayview Medical CenterBaltimore, MD · Acute Care Hospital · CCN 210029
- Meritus Medical CenterHagerstown, MD · Acute Care Hospital · CCN 210001
- Northwest Hospital CenterRandallstown, MD · Acute Care Hospital · CCN 210040
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · CCN 210009
- Tidalhealth Peninsula Regional, IncSalisbury, MD · Acute Care Hospital · CCN 210019
Practice locations
Addresses where Timothy McMahon is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 10803 Falls RdLutherville, MD 21093
- 10803 Falls Rd Pavilion III, Greenspring Station AscLutherville, MD 21093 (410) 955‑6108
- 11055 Little Patuxent PkwyColumbia, MD 21044 (443) 574‑5800
- 4940 Eastern AveBaltimore, MD 21224
- 5755 Cedar LnColumbia, MD 21044 (410) 740‑7890
Group practices
Medicare enrollment lists Timothy McMahon 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
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Lutherville
Clinicians with the same Medicare primary specialty in Lutherville, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1467913442 |
| 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