Quick answers
- Does Sandor Niemann accept Medicare assignment?
- Yes. Medicare's clinician data says Sandor Niemann accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Sandor Niemann see?
- In 2024, CMS data shows 180 Original Medicare patients and 702 services for Sandor Niemann. This counts Original Medicare only and measures volume, not quality.
- What is Sandor Niemann's NPI number?
- 1861484461. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Sandor Niemann, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 180 |
|---|---|
| Services billed to Medicare | 702 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)208 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)138 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)98 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)58 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)24 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure68%
- High cholesterol68%
- Arthritis41%
- Ischemic heart disease24%
- Diabetes22%
- Anxiety19%
Practice locations
Addresses where Sandor Niemann is enrolled with Medicare (CMS data updated October 2, 2026).
- 5645 Stone RdCentreville, VA 20120 (703) 266‑2442
Group practices
Medicare enrollment lists Sandor Niemann as a member of this group (CMS data updated October 2, 2026).
- Rocky Run Family Medicine Inc7 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Centreville
Clinicians with the same Medicare primary specialty in Centreville, VA — not a recommendation.
Other clinicians in Rocky Run Family Medicine Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Uniformed Services Uhs Fe Hebert School Of Med |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861484461 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians