Quick answers
- Where does Andrew J. Siekanowicz see patients?
- Medicare's clinician data lists 1 practice location in Silver Spring, MD. Call before your visit to confirm the address.
- What is Andrew J. Siekanowicz's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Andrew J. Siekanowicz accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew J. Siekanowicz 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 Andrew J. Siekanowicz?
- (301) 681-3100, as listed in official Medicare / NPI Registry data.
- What is Andrew J. Siekanowicz's NPI number?
- 1316969025. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Andrew J. Siekanowicz is enrolled with Medicare (CMS data updated 2026-10-02).
- 10313 Georgia Ave, Suite 107Silver Spring, MD 20902 (301) 681‑3100
Group practices
Medicare enrollment lists Andrew J. Siekanowicz as a member of this group (CMS data updated 2026-10-02).
- Rosenthal and Siekanowicz, LLC2 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Silver Spring
Clinicians with the same Medicare primary specialty in Silver Spring, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316969025 |
| 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
- 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