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DR. MARK NAU M.D.
NPI 1033579479
Internal Medicine - Critical Care Medicine in Fort Belvoir, VA

Active since February 27, 2016PECOS EnrolledAccepts Medicare Assignment
86.79/100
CMS Quality Rating
9300 DEWITT LOOP, FORT BELVOIR, VA 22060(571) 231-1605 Get Directions Write a Review

NPPES record last updated: May 19, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 19, 2025, Dec 8, 2022, Mar 26, 2018 and 2 more (5 updates tracked since 2016).

About Dr. Mark Nau M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK NAU M.D. (NPI 1033579479) is an individual critical care medicine provider in Fort Belvoir, Virginia, licensed in Maryland (D0093781) and active in the NPI registry since February 2016. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Howard County Medical Center, and is a graduate of Indiana University School Of Medicine (2016).

NPPES Registry Identity

NPI1033579479
Entity TypeIndividualMale
Primary Taxonomy207RC0200X
Provider Legal NameDR. MARK NAUCredential: M.D.
Location Address9300 DEWITT LOOPFort Belvoir, VA 22060-5285
Mailing Address9300 Dewitt LoopFort Belvoir, VA 22060-5285 · (571) 231-1605
Phone(571) 231-1605
Sole ProprietorYes
Medical School CMSIndiana University School Of MedicineGraduated 2016
Enumeration DateFebruary 27, 2016
Last NPPES UpdateMay 19, 20255 updates tracked since enumeration
NPPES CertifiedMay 19, 2025
✔ NPI 1033579479 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RC0200X
License✔ Licensed in MD · D0093781
Definition
An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedInternal MedicineTaxonomy 207R00000X · License D0093781 (MD)
Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License 0101271145 (VA)
9300 DEWITT LOOP, Fort Belvoir, VA 22060
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark Nau M.d. 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.

PECOS PAC ID7810259132
PECOS Enrollment IDI20220728002615, I20250423003141
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

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.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
19 services18 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Johns Hopkins Howard County Medical Center

Acute Care Hospitals · Columbia, MD
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210048
Location5755 Cedar LaneColumbia, MD 21044 · Howard County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22060 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

86.79/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality86.46
Promoting Interoperability97
Improvement Activities40
Cost72

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ASHLEY L MALTEZ-LAURIENTI PSY.D.
Counselor (Mental Health)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (712) 313-2245
MEGAN ANNE KELLY COTA
Occupational Therapy Assistant
9300 DEWITT LOOP
FT BELVOIR, VA 22060
Fairfax County (571) 231-1321
MS. SHANNON NOELLE FULCROD LCSW, CSAC, MAC
Social Worker (Clinical)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-1200
CALE WRIGHT PSYD
Psychologist (Clinical Child & Adolescent)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-0524
SPENCER OSBOURN
Psychiatry & Neurology (Neurology)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-2966
HEATHER R BARAL
Social Worker (Clinical)
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-3224
UMAR KHAN
Orthopaedic Surgery
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-3224
DAVID PITTS JR. DO
General Practice
9300 DEWITT LOOP
FORT BELVOIR, VA 22060
Fairfax County (571) 231-1803

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 Nau's NPI number?

The NPI number for Mark Nau is 1033579479. It was assigned to this individual provider in the NPPES registry on February 27, 2016.

Where is Mark Nau located?

Mark Nau practices at 9300 Dewitt Loop, Fort Belvoir, VA 22060. The listed phone number is (571) 231-1605.

What is Mark Nau's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Is Mark Nau enrolled in Medicare?

Yes. Mark Nau 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.

Is Mark Nau affiliated with any hospitals?

According to CMS data, Mark Nau is affiliated with Johns Hopkins Howard County Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Nau was last updated on May 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.