Individual provider Active NPI

Sydney Lynn Marinelli, PA-C

  • Physician Assistant
  • Prince Frederick, MD
National Provider Identifier
1285583427
Registry record updated Jan 22, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
Practice address
110 Hospital Rd Ste 201
Prince Frederick, MD 20678-4045
Phone
(410) 535-1343
NPI assigned
Jan 22, 2026
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 22, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X Primary

Addresses

Primary practice location

110 Hospital Rd Ste 201
Prince Frederick, MD 20678-4045

Mailing address

44476 Whitestone PL
Tall Timbers, MD 20690-2031

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260317001608 MD Practitioner - Physician Assistant 3476036534 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2025
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Centers for Advanced Orthopaedics LLCGroup PAC ID 8123260981, 599 clinicians

Practice addresses (Care Compare)

110 Hospital Rd
Suite 201
Prince Frederick, MD 20678-4045
Phone (410) 535-1343

86 Thomas Johnson CT
Frederick, MD 21702-4348
Phone (301) 694-8311

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Centers for Advanced Orthopaedics, LLC CurrentSince Mar 2, 2026 Accepting new patients
Centers for Advanced Orthopaedics, LLC CurrentSince Mar 2, 2026 Accepting new patients

Locations

110 Hospital Rd
Ste 201
Prnc Frederck, MD 20678
Phone (410) 353-1343

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1769040000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769040000000",
    "number": "1285583427",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "44476 WHITESTONE PL",
            "city": "TALL TIMBERS",
            "state": "MD",
            "postal_code": "206902031"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 HOSPITAL RD STE 201",
            "city": "PRINCE FREDERICK",
            "state": "MD",
            "postal_code": "206784045",
            "telephone_number": "410-535-1343"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARINELLI",
        "first_name": "SYDNEY",
        "middle_name": "LYNN",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-01-22",
        "last_updated": "2026-01-22",
        "certification_date": "2026-01-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Prince Frederick, MD

Sources for this page

Verify at the official NPI Registry.