Individual provider Active NPI

Stephen M Nilsen, D.O.

  • Anesthesiology Physician
  • Nottingham, MD
National Provider Identifier
1972589398
Registry record updated Jun 24, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
H0058012 Issued in MD
Practice address
8100 Sandpiper Cir Ste 210
Nottingham, MD 21236-4992
Phone
(855) 527-7246
Fax
(866) 229-5063
NPI assigned
Dec 17, 2005
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 24, 2024

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X DO33153 DC
Anesthesiology Physician 207L00000X H0058012 MD Primary

Addresses

Primary practice location

8100 Sandpiper Cir Ste 210
Nottingham, MD 21236-4992

Mailing address

28665 Earthlite Rd
Wye Mills, MD 21679-2024
Phone (410) 827-7188

Other practice location 1

28665 Earthlite Rd
Wye Mills, MD 21679-2024
Phone (410) 827-7188

Other identifiers 1

IdentifierTypeStateIssuer
699474101MedicaidMD

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC, VA, DE4 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 4

Enrollment IDStateProvider typePAC IDDetails
I20050120000853 MD Practitioner - Anesthesiology 6608825260 Reassigns benefits to 9 organizations
I20050309000375 DC Practitioner - Anesthesiology 6608825260 Reassigns benefits to 5 organizations
I20181214000782 VA Practitioner - Anesthesiology 6608825260 Reassigns benefits to 3 organizations
I20240717001711 DE Practitioner - Anesthesiology 6608825260 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
New York College of Osteo Medicine of New York Institute of Technology, 1994
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Columbia Outpatient Sedation LLCGroup PAC ID 3476718792, 29 clinicians
Clearway Anesthesia Services NE LLCGroup PAC ID 4789061532, 3 clinicians
Anesthesia Connections-Virginia, LLCGroup PAC ID 6608166335, 14 clinicians

Practice addresses (Care Compare)

3407 Olandwood CT
Unit 103
Olney, MD 20832-1447
Phone (301) 570-8671

4660 Wilkens Ave
Suite 208
Baltimore, MD 21229-4848
Phone (855) 527-7246

655 S Bay Rd
Suite D
Dover, DE 19901-4615
Phone (855) 527-7246

7120 Minstrel Way
Suite 100
Columbia, MD 21045-5274
Phone (410) 290-6677

8171 Maple Lawn Blvd
Suite 100
Fulton, MD 20759-2527
Phone (410) 531-7557

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy, Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
DO33153DCMDAnesthesiology Physician
H0058012MDMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
First Colonies Anesthesia Associates, LLC Anesthesiology CurrentSince Apr 18, 2023 Accepting new patients
Advanced Pain Management Specialists, LLC CurrentSince Jul 1, 2024 Accepting new patients
Clearway Anesthesia Services NE LLC Anesthesiology CurrentSince Jun 24, 2024 Accepting new patients
Columbia Outpatient Sedation LLC Anesthesiology CurrentSince Aug 1, 2025 Accepting new patients
Advanced Pain Management Specialists, LLC Anesthesiology CurrentSince Jul 1, 2024 Accepting new patients
Xenon Health of Maryland LLC Anesthesiology CurrentSince Feb 1, 2025 Accepting new patients
Xenon Health of Delaware LLC Anesthesiology CurrentSince Jul 1, 2024 Accepting new patients
North American Partners in Anesthesia Maryland LLC Anesthesiology CurrentSince Sep 1, 2021 Accepting new patients
Center for Pain Management, LLC CurrentSince Oct 1, 2019 Accepting new patients
Tidewater Anesthesia Associates, PA Anesthesiology Past Accepting new patients
Surgery Center of Central Virginia Inc. Past Accepting new patients
Advanced Pain Management Specialists, LLC Past Accepting new patients
Washington Hospital Center Corp Anesthesiology Past Accepting new patients
Olney Endoscopy Center PastSince Aug 1, 2025 Accepting new patients

Locations (25 of 42)

655 S Bay Rd
Ste 3D
Dover, DE 19901

655 S Bay Rd
Ste D
Dover, DE 19901

300 Delaware Ave
Ste 210
Wilmington, DE 19801
Phone (516) 458-4366

201 Defense Hwy
Ste 260
Annapolis, MD 21401

810 Bestgate Rd
Ste 120
Annapolis, MD 21401

810 Bestgate Rd
Ste 220
Annapolis, MD 21401
Phone (800) 997-2460

1419 Forest Dr
Ste 105
Annapolis, MD 21403

4660 Wilkens Ave
Ste 208
Baltimore, MD 21229

510 Upper Chesapeake Dr
Ste 415
Bel Air, MD 21014
Phone (443) 643-3000

6410 Rockledge Dr
Ste 400
Bethesda, MD 20817
Phone (301) 530-5200

6430 Rockledge Dr
Ste 160
Bethesda, MD 20817
Phone (301) 312-6144

16900 Science Dr
Ste 100
Bowie, MD 20715
Phone (301) 464-7008

5457 Twin Knolls Rd
Ste 300
Columbia, MD 21045
Phone (410) 696-5142

7120 Minstrel Way
Ste 106
Columbia, MD 21045
Phone (410) 290-9191

7120 Minstrel Way
Ste 100
Columbia, MD 21045
Phone (571) 210-4828

940 Seton Dr
Ste A
Cumberland, MD 21502
Phone (301) 777-2543

12500 Willowbrook Rd
Cumberland, MD 21502
Phone (240) 964-1255

598 Cynwood Dr
Ste 103
Easton, MD 21601
Phone (410) 820-7040

75 Thomas Johnson Dr
Ste C
Frederick, MD 21702
Phone (301) 620-0012

400 W 7th St
Frederick, MD 21701
Phone (240) 566-3300

19735 Germantown Rd
Ste 360
Germantown, MD 20874
Phone (301) 528-2810

1600 Crain Hwy S
Ste 301A
Glen Burnie, MD 21061

1150 Professional Ct
Ste P
Hagerstown, MD 21740
Phone (301) 665-9696

1150 Professional Ct
Ste B
Hagerstown, MD 21740
Phone (301) 797-4901

11350 McCormick Rd
Ste 501
Hunt Valley, MD 21031
Phone (410) 329-1071

Interoperability endpoints

  • Direct secure messaging: stephen.nilsen.1@11679.direct.athenahealth.com

Organizations & group practices 17

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

View all 17

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1134777600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1719187200000",
    "number": "1972589398",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "28665 EARTHLITE RD",
            "city": "WYE MILLS",
            "state": "MD",
            "postal_code": "216792024",
            "telephone_number": "410-827-7188",
            "fax_number": "410-827-7076"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8100 SANDPIPER CIR STE 210",
            "city": "NOTTINGHAM",
            "state": "MD",
            "postal_code": "212364992",
            "telephone_number": "855-527-7246",
            "fax_number": "866-229-5063"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "28665 Earthlite Rd",
            "address_purpose": "LOCATION",
            "city": "Wye Mills",
            "state": "MD",
            "postal_code": "216792024",
            "country_code": "US",
            "telephone_number": "410-827-7188",
            "fax_number": "410-827-7076",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NILSEN",
        "first_name": "STEPHEN",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-12-17",
        "last_updated": "2024-06-24",
        "certification_date": "2024-06-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "DC",
            "license": "DO33153",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MD",
            "license": "H0058012",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "699474101",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Nottingham, MD

Sources for this page

Verify at the official NPI Registry.