Provider Profile
Marsha A. Nau, FNP-C
Unclaimed ProfileAbout Marsha Nau
Listed in the NPI registry as a nurse practitioner, Marsha A. Nau, FNP-C practices in Smyrna, DE. Marsha is also listed as specializing in nurse practitioner — family. According to Medicare claims data, Marsha cared for 413 Medicare patients across 449 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (302) 514-3371
- Email not available
Practice Locations
401 N CARTER RD STE 201
Smyrna, DE 19977
Procedures Most Often Billed to Medicare
449 services · 413 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 2 views | Imaging | 71046 |
36 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
170 | More often than most peers in Nurse Practitioner |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
67 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
51 | As often as other peers in Nurse Practitioner |
| Automated urinalysis test | Lab test | 81003 |
46 | More often than most peers in Nurse Practitioner |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | Lab test | 87880 |
26 | More often than most peers in Nurse Practitioner |
| Detection test by immunoassay with direct visual observation for influenza virus | Lab test | 87804 |
25 | Less often than most peers in Nurse Practitioner |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
17 | Less often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
11 | Less often than most peers in Nurse Practitioner |
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.
Other nurse practitioners at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other nurse practitioners in Smyrna 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 2 views 8
Providers in DE who bill this service to Medicare most often.
Common questions
What kind of doctor is Marsha A. Nau?
Marsha A. Nau is a nurse practitioner in Smyrna, DE. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Marsha A. Nau's address?
Marsha A. Nau is listed at 401 N Carter Rd Ste 201, Smyrna, DE 19977. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Marsha A. Nau?
The number on file is (302) 514-3371. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Marsha A. Nau's NPI number?
Marsha A. Nau's National Provider Identifier is 1790227676. 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
Where did Marsha A. Nau train?
Marsha A. Nau attended Other, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How long has Marsha A. Nau been practicing?
Marsha A. Nau has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What procedures does Marsha A. Nau perform?
According to Medicare billing data, Marsha A. Nau performs imaging including x-ray of chest, 2 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Marsha A. Nau confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Marsha A. Nau. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.