Mark Nau, M.D.
Critical Care Medicine (Internal Medicine) Physician · Fort Belvoir, VA
Mark Nau, M.D. is a critical care medicine (internal medicine) physician with a practice address in Fort Belvoir, Virginia, and NPI 1033579479, issued on Feb 27, 2016. Check the license (Virginia 0101271145, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Mark Nau
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- 0101271145 VA
D0093781 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9300 Dewitt Loop, Fort Belvoir, VA 22060
- Phone
- (571) 231-1605
- Enumerated
- Feb 27, 2016
- Record last updated
- May 19, 2025
- Medicare enrollment
- Enrolled (PECOS I20220728002615); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 176 in Virginia → Look up another NPI →
Also registered at 9300 Dewitt Loop
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Adnan Ahmad, M.D.Psychiatry Physician1043493968
- Syed Ahmed, MDOrthopaedic Surgery Physician1629059639
- Zarmina Ahmed-Yusufi, M.DInternal Medicine Physician1972720258
Verify Mark Nau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101271145Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 86.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Johns Hopkins Community Physicians, IncBaltimore, MD
- Uva Community Health Medical Group LLCManassas, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Nau among 176 critical care medicine (internal medicine) physician records in Virginia
Mark Nau, M.D. is one of 176 critical care medicine (internal medicine) physician records with a practice address in Virginia. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 83% of them.
- NPI issued2016 · 83% of these records are older, 11% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 85% of these records are
- Graduated2016 · median 2007 among the 149 with a school on file
- Record last updated2025 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Virginia
There are 176 critical care medicine (internal medicine) physician records in Virginia.
All 176 in Virginia → Every provider in Fort Belvoir → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Ryan Inocencio, M.D.Ft Belvoir, VA 220601386886216
- Behrouz Ferdosian Najafabadi, M.D.Falls Church, VA 220441992183446
- Sami Abdul Jawad, M.D.Falls Church, VA 220421487930905
- Ahmad Abdul-Aziz, M.D.Falls Church, VA 220421285045518
- Easa Al-Ghandour, MDFalls Church, VA 220421457580607
- Jessica Buchner, M.D.Falls Church, VA 220421881960706
- Mehul Desai, MDFalls Church, VA 220421881985786
- Duy Duong, DOFalls Church, VA 220421528301678
Common questions
What is Mark Nau, M.D.'s NPI number?
Mark Nau, M.D.'s National Provider Identifier (NPI) is 1033579479, issued on Feb 27, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mark Nau, M.D. located?
The NPPES record lists a practice address at 9300 Dewitt Loop, Fort Belvoir, VA, 22060. Phone: (571) 231-1605. Providers update this record themselves, so call before visiting.
How can I verify Mark Nau, M.D.'s license?
NPPES lists Virginia license number 0101271145, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Mark Nau, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.