MICHAEL ANDREW GRIMM MD
NPI 1447238050
Radiology - Vascular & Interventional Radiology in Leesburg, VA
About Michael Andrew Grimm Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL ANDREW GRIMM MD (NPI 1447238050) is an individual vascular & interventional radiology provider in Leesburg, Virginia, licensed in Virginia (0101232535) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Lewisgale Medical Center, and maintains a secondary practice location in Fairfax.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
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
Michael Andrew Grimm Md 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
6Medicare enrollment records show Michael Grimm reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Leesburg, VA 20176
- Reassigned Medicare billing, Virginia enrollment
- 291 clinicians in this Medicare group
Ashburn, VA 20147
- Reassigned Medicare billing, Virginia enrollment
- 33 clinicians in this Medicare group
Reston, VA 20190
- Reassigned Medicare billing, District of Columbia enrollment
- 33 clinicians in this Medicare group
Reston, VA 20190
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 36 clinicians in this Medicare group
Fairfax, VA 22033
- Reassigned Medicare billing, District of Columbia enrollment
- 32 clinicians in this Medicare group
Roanoke, VA 24018
- Reassigned Medicare billing, Virginia enrollment
- 33 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 71
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lewisgale Medical Center
Acute Care Hospitals · Salem, VAReston Hospital Center
Acute Care Hospitals · Reston, VALewisgale Hospital Montgomery
Acute Care Hospitals · Blacksburg, VALewisgale Hospital Alleghany
Acute Care Hospitals · Low Moor, VAStonesprings Hospital Center
Acute Care Hospitals · Dulles, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20176 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.
Reported Quality Measures
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LEESBURG, VA 20176
LEESBURG, VA 20176
LEESBURG, VA 20176
LEESBURG, VA 20176
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 Michael Grimm's NPI number?
The NPI number for Michael Grimm is 1447238050. It was assigned to this individual provider in the NPPES registry on January 4, 2006.
Where is Michael Grimm located?
Michael Grimm practices at 19500 Sandridge Way, Suite 420, Leesburg, VA 20176. The listed phone number is (571) 375-8601.
What is Michael Grimm's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Vascular & Interventional Radiology, with taxonomy code 2085R0204X.
Is Michael Grimm enrolled in Medicare?
Yes. Michael Grimm 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 Michael Grimm's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Grimm reassigns Medicare benefits to 6 organizations: Loudoun Medical Group, PC (Leesburg, VA), Loudoun Imaging Center/Ashburn, LLC (Ashburn, VA), Mri Of Reston, LP (Reston, VA), Reston Radiology Consultants, PC (Reston, VA), Fair Oaks Imaging Center, PC (Fairfax, VA) and 1 more organization, listed in the Medicare section above. 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 Michael Grimm's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Grimm affiliated with any hospitals?
According to CMS data, Michael Grimm is affiliated with Lewisgale Medical Center, Reston Hospital Center, Lewisgale Hospital Montgomery, Lewisgale Hospital Alleghany and Stonesprings Hospital Center.
When was this NPI record last updated?
The NPPES record for Michael Grimm was last updated on November 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.