Individual provider Active NPI

Courtney Knowles, FNP-C

  • Dermatology Physician
  • Hagerstown, MD
National Provider Identifier
1326912585
Registry record updated Oct 1, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Dermatology PhysicianTaxonomy code 207N00000X
License
R231486 Issued in MD
Practice address
1101 Opal CT Ste 315a
Hagerstown, MD 21740-5947
Phone
(240) 469-4835
NPI assigned
Oct 1, 2025
Last updated
Oct 1, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 1, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Dermatology Physician 207N00000X R231486 MD Primary

Addresses

Primary practice location

1101 Opal CT Ste 315a
Hagerstown, MD 21740-5947

Mailing address

1101 Opal CT Ste 315a
Hagerstown, MD 21740-5947

Other practice location 1

512 N Market St
Frederick, MD 21701-5243
Phone (240) 439-4305

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
R231486MDMDDermatology Physician

NPI Registry JSON

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

{
    "created_epoch": "1759276800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759276800000",
    "number": "1326912585",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1101 OPAL CT STE 315A",
            "city": "HAGERSTOWN",
            "state": "MD",
            "postal_code": "217405947"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1101 OPAL CT STE 315A",
            "city": "HAGERSTOWN",
            "state": "MD",
            "postal_code": "217405947",
            "telephone_number": "240-469-4835"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "512 N Market St",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217015243",
            "country_code": "US",
            "telephone_number": "240-439-4305",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KNOWLES",
        "first_name": "COURTNEY",
        "credential": "FNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-10-01",
        "last_updated": "2025-10-01",
        "certification_date": "2025-10-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "MD",
            "license": "R231486",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Hagerstown, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 1, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.