Individual provider Active NPI

William Linkroum IV, CRNP

  • Acute Care Nurse Practitioner
  • Columbia, MD
National Provider Identifier
1467019307
Registry record updated Jul 9, 2020
On this page

Key facts

NPPES NPI Registry
Primary specialty
Acute Care Nurse PractitionerTaxonomy code 363LA2100X
License
R220163 Issued in MD
Practice address
5457 Twin Knolls Rd Ste 100
Columbia, MD 21045-3263
Phone
(443) 430-5370
NPI assigned
May 27, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 9, 2020

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X
Acute Care Nurse Practitioner 363LA2100X R220163 MD Primary

Addresses

Primary practice location

5457 Twin Knolls Rd Ste 100
Columbia, MD 21045-3263

Mailing address

1214 W Lake Ave
Baltimore, MD 21210-1013
Phone (804) 615-4308

Other practice location 1

1800 Orleans St # 5W
Baltimore, MD 21287-0010
Phone (804) 615-4308

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20200429001282 MD Practitioner - Nurse Practitioner 5496185779 Reassigns benefits to 3 organizations
I20210927000217 DC Practitioner - Nurse Practitioner 5496185779 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians
Gilchrist Hospice Care IncGroup PAC ID 2769580422, 52 clinicians

Practice addresses (Care Compare)

25500 Point Lookout Rd
Leonardtown, MD 20650-2015
Phone (240) 434-4088

6701 N Charles St
Baltamore, MD 21204-6808

Hospital & facility affiliations

  • Greater Baltimore Medical Center Hospital, Baltimore, MD, CCN 210044
  • Medstar Franklin Square Medical Center Hospital, Rosedale, MD, CCN 210015

Merit-based Incentive Payment System (MIPS)

Final score
82.34 of 100Reported as group
Quality
67.9
Promoting interoperability
100
Improvement activities
40
Cost
69.47

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
R220163MDMDAcute Care Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Medstar Medical Group II LLC CurrentSince Dec 1, 2020 Accepting new patients
Gilchrist Hospice Care, Inc. CurrentSince Oct 27, 2025 Accepting new patients
Gilchrist Hospice Care, Inc. CurrentSince Oct 27, 2025 Accepting new patients
Seasons Medical Group of Maryland PC CurrentSince Apr 1, 2020 Accepting new patients
Medstar Medical Group II LLC CurrentSince Dec 1, 2020 Accepting new patients

Locations

1145 19th St NW
Ste 311
Washington, DC 20036
Phone (202) 429-2401

29955 Three Notch Rd
Ste 100
Charlotte Hall, MD 20622
Phone (301) 290-5300

5457 Twin Knolls Rd
Ste 100
Columbia, MD 21045
Phone (410) 689-7400

1406 Crain Hwy S
Glen Burnie, MD 21061
Phone (410) 768-6440

1406 Crain Hwy S
Ste 106
Glen Burnie, MD 21061
Phone (410) 768-6440

25500 Point Lookout Rd
Leonardtown, MD 20650
Phone (301) 475-6106

9000 Franklin Square Dr
Rosedale, MD 21237
Phone (410) 682-7000

6701 N Charles St
Ste 4105
Towson, MD 21204
Phone (443) 849-3184

Organizations & group practices 5

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.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1558915200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1594252800000",
    "number": "1467019307",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1214 W LAKE AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212101013",
            "telephone_number": "804-615-4308"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5457 TWIN KNOLLS RD STE 100",
            "city": "COLUMBIA",
            "state": "MD",
            "postal_code": "210453263",
            "telephone_number": "443-430-5370"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1800 Orleans St # 5W",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212870010",
            "country_code": "US",
            "telephone_number": "804-615-4308",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LINKROUM",
        "first_name": "WILLIAM",
        "name_prefix": "Mr.",
        "name_suffix": "IV",
        "credential": "CRNP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-05-27",
        "last_updated": "2020-07-09",
        "certification_date": "2020-07-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "MD",
            "license": "R220163",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Columbia, MD

Sources for this page

Verify at the official NPI Registry.