MR. WILLIAM LINKROUM IV CRNP
NPI 1467019307
Nurse Practitioner - Acute Care in Columbia, MD
About Mr. William Linkroum Iv Crnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. WILLIAM LINKROUM IV CRNP (NPI 1467019307) is an individual acute care provider in Columbia, Maryland, licensed in Maryland (R220163) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, is affiliated with Medstar Franklin Square Medical Center, and maintains a secondary practice location in Baltimore.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mr. William Linkroum Iv Crnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show William Linkroum reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbia, MD 21045
- Reassigned Medicare billing, Maryland enrollment
- 39 clinicians in this Medicare group
Baltimore, MD 21204
- Reassigned Medicare billing, Maryland enrollment
- 75 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 3,530 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Medstar Franklin Square Medical Center
Acute Care Hospitals · Rosedale, MDGreater Baltimore Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21045 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLUMBIA, MD 21045
COLUMBIA, MD 21045
COLUMBIA, MD 21045
COLUMBIA, MD 21045
COLUMBIA, MD 21045
COLUMBIA, MD 21045
COLUMBIA, MD 21045
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Linkroum's NPI number?
The NPI number for William Linkroum is 1467019307. It was assigned to this individual provider in the NPPES registry on May 27, 2019.
Where is William Linkroum located?
William Linkroum practices at 5457 Twin Knolls Rd Ste 100, Columbia, MD 21045. The listed phone number is (443) 430-5370.
What is William Linkroum's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is William Linkroum enrolled in Medicare?
Yes. William Linkroum is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Linkroum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Linkroum reassigns Medicare benefits to 3 organizations: Seasons Medical Group Of Maryland PC (Columbia, MD), Gilchrist Hospice Care, Inc. (Baltimore, MD) and Medstar Medical Group II LLC (Baltimore, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Linkroum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Linkroum affiliated with any hospitals?
According to CMS data, William Linkroum is affiliated with Medstar Franklin Square Medical Center and Greater Baltimore Medical Center.
When was this NPI record last updated?
The NPPES record for William Linkroum was last updated on July 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mr. William Linkroum IV, CRNP · NPI 1467019307
Acute Care physician in Columbia, Maryland. Individual provider, active in the CMS NPPES registry since May 27, 2019.
## Identity
- **NPI:** 1467019307 (Entity type: Individual)
- **Enumerated:** May 27, 2019
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** R220163 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 5457 TWIN KNOLLS RD STE 100, Columbia, MD 21045-3263
- **Phone:** (443) 430-5370
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Seasons Medical Group Of Maryland PC (NPI 1376894931, Columbia, MD); Gilchrist Hospice Care, Inc. (NPI 1871069799, Baltimore, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** July 9, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1467019307) · Data from the CMS NPPES public registry.