Quick answers
- Where does Stephen Nilsen see patients?
- Medicare's clinician data lists 8 practice locations, including Annapolis, MD, Olney, MD and Baltimore, MD. Call before your visit to confirm the address.
- What is Stephen Nilsen's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Stephen Nilsen accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen Nilsen 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 Stephen Nilsen?
- (410) 290-6677, as listed in official Medicare / NPI Registry data.
- What is Stephen Nilsen's NPI number?
- 1972589398. 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 Stephen Nilsen is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 1419 Forest Dr, Suite 105Annapolis, MD 21403 (410) 290‑6677
- 3407 Olandwood Ct, Unit 103Olney, MD 20832 (301) 570‑8671
- 4660 Wilkens Ave, Suite 208Baltimore, MD 21229 (855) 527‑7246
- 655 S Bay Rd, Suite DDover, DE 19901 (855) 527‑7246
- 7120 Minstrel Way, Suite 100Columbia, MD 21045 (410) 290‑6677
Group practices
Medicare enrollment lists Stephen Nilsen as a member of these groups (CMS data updated 2026-10-02).
- Columbia Outpatient Sedation LLC30 clinicians in the group
- Anesthesia Connections-Virginia, LLC12 clinicians in the group
- Clearway Anesthesia Services NE LLC3 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Annapolis
Clinicians with the same Medicare primary specialty in Annapolis, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York College Of Osteo Medicine Of New York Institute Of Technology |
| Graduation year | 1994 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972589398 |
| 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