Quick answers
- Does Sean M. Anderson accept Medicare assignment?
- Yes. Medicare's clinician data says Sean M. Anderson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Sean M. Anderson's NPI number?
- 1235690645. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sean M. Anderson works
Medicare's Facility Affiliation Data lists Sean M. Anderson at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Johns Hopkins Howard County Medical CenterColumbia, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210048
- MedStar Harbor HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 210034
- Saint Agnes HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210011
Practice locations
Addresses where Sean M. Anderson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1300 York Rd, Suite 30dLutherville Timonium, MD 21093 (443) 275‑1337
Group practices
Medicare enrollment lists Sean M. Anderson as a member of this group (CMS data updated October 2, 2026).
- Johns Hopkins Regional Physicians LLC84 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in Maryland
Clinicians with the same Medicare primary specialty in Maryland — not a recommendation.
Other clinicians in Johns Hopkins Regional Physicians LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1235690645 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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