Physician Profile
Unclaimed ProfileAbout NAU
Based in Fort Belvoir, VA, Mark Nau, M.D. is listed in the NPI registry under critical care (intensivists). Mark graduated from Indiana University School of Medicine in 2016. Mark is also listed as specializing in internal medicine, pulmonary disease, and critical care medicine.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (571) 231-1605
- Email not available
Practice Locations
9300 DEWITT LOOP
Fort Belvoir, VA 22060
Procedures Most Often Billed to Medicare
19 services · 18 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Critical care, first 30-74 minutes | Office visit | 99291 |
19 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Indiana University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2016 at Indiana University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Nau's specialty?
Dr. Nau is a critical care (intensivists) in Fort Belvoir, VA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “CRITICAL CARE (INTENSIVISTS)”.
NPI registry
Where can I find Dr. Nau?
Dr. Nau is listed at 9300 DEWITT LOOP, Fort Belvoir, VA 22060. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Nau?
The number on file is (571) 231-1605. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Nau?
Dr. Nau's National Provider Identifier is 1033579479. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Nau's medical education?
Dr. Nau attended Indiana University School of Medicine, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Nau have?
Dr. Nau has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Nau known for?
According to Medicare billing data, Dr. Nau the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Nau's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Nau. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.