MARK D NIEHAUS MD
NPI 1972541548
Internal Medicine in Charlottesville, VA
About Mark D Niehaus Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK D NIEHAUS MD (NPI 1972541548) is an individual internal medicine provider in Charlottesville, Virginia, licensed in Virginia (0101234414) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Sentara Rmh Medical Center, and is a graduate of Warren Alpert Medical School Of Brown University (2003).
NPPES Registry Identity
Specialties & Licenses 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
Mark D Niehaus 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
2Medicare enrollment records show Mark Niehaus reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Charlottesville, VA 22911
- Reassigned Medicare billing, Virginia enrollment
- 307 clinicians in this Medicare group
Arlington, VA 22203
- Reassigned Medicare billing, Virginia enrollment
- 1,315 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 18
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sentara Rmh Medical Center
Acute Care Hospitals · Harrisonburg, VAUniversity Of Virginia Medical Center
Acute Care Hospitals · Charlottesville, VASentara Martha Jefferson Hospital
Acute Care Hospitals · Charlottesville, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22901 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
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHARLOTTESVILLE, VA 22901
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 Mark Niehaus's NPI number?
The NPI number for Mark Niehaus is 1972541548. It was assigned to this individual provider in the NPPES registry on June 3, 2006.
Where is Mark Niehaus located?
Mark Niehaus practices at 416 Albemarle Sq, Charlottesville, VA 22901. The listed phone number is (434) 422-1919.
What is Mark Niehaus's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mark Niehaus enrolled in Medicare?
Yes. Mark Niehaus 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 Mark Niehaus's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Niehaus reassigns Medicare benefits to 2 organizations: Martha Jefferson Medical Group LLC (Charlottesville, VA) and Privia Medical Group, LLC (Arlington, VA). 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 Mark Niehaus's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Mark Niehaus affiliated with any hospitals?
According to CMS data, Mark Niehaus is affiliated with Sentara Rmh Medical Center, University Of Virginia Medical Center and Sentara Martha Jefferson Hospital.
When was this NPI record last updated?
The NPPES record for Mark Niehaus was last updated on April 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.