Quick answers
- Which hospitals does Ryan M. Zimmerman work at?
- Medicare's official clinician data lists Ryan M. Zimmerman at 1 hospital: MedStar Union Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan M. Zimmerman see patients?
- Medicare's clinician data lists 7 practice locations, including Forest Hill, MD, Lutherville, MD and Glen Burnie, MD. Call before your visit to confirm the address.
- What is Ryan M. Zimmerman's specialty?
- Medicare lists Hand Surgery as the primary specialty, and also Orthopedic Surgery.
- Does Ryan M. Zimmerman accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan M. Zimmerman 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 Ryan M. Zimmerman?
- (410) 768-6440, as listed in official Medicare / NPI Registry data.
- What is Ryan M. Zimmerman's NPI number?
- 1164659645. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan M. Zimmerman works
Medicare's Facility Affiliation Data lists Ryan M. Zimmerman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- MedStar Union Memorial HospitalBaltimore, MD · Acute Care Hospital · CCN 210024
Practice locations
Addresses where Ryan M. Zimmerman is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 12 Newport Dr, Suite AForest Hill, MD 21050
- 1400 Front Ave, Suite 100Lutherville, MD 21093
- 1406 Crain S Hwy 106Glen Burnie, MD 21061 (410) 768‑6440
- 201 E University PkwyBaltimore, MD 21218 (410) 554‑2000
- 3304 Guilford AveBaltimore, MD 21218 (410) 554‑6740
Group practices
Medicare enrollment lists Ryan M. Zimmerman as a member of these groups (CMS data updated 2026-10-02).
- MedStar Medical Group II LLC3,767 clinicians in the group
- Agape Physical Therapy and Sports Rehabilitation LP678 clinicians in the group
- Greater Chesapeake Hand Specialists, P.A.10 clinicians in the group
Specialties
- Hand Surgeryprimary
- Orthopedic Surgeryalso
Other hand surgeons in Forest Hill
Clinicians with the same Medicare primary specialty in Forest Hill, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1164659645 |
| 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