Physician Profile
Unclaimed ProfileAbout NAU
Based in Chillicothe, IL, Christopher William Nau, MD is listed in the NPI registry under internal medicine. Christopher graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2007. Christopher is also listed as specializing in pediatrics. According to Medicare claims data, Christopher cared for 543 Medicare patients across 689 services.
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
- (309) 274-4336
- Email not available
Practice Locations
311 N 4TH ST
Chillicothe, IL 61523
Procedures Most Often Billed to Medicare
689 services · 543 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Influenza vaccine, inactivated | Treatment | 90653 |
60 |
| Routine electrocardiogram (ecg) using at least 12 leads with tracing | Treatment | 93005 |
23 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
20 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
331 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
84 |
| Administration of influenza virus vaccine | Billing code | G0008 |
70 |
| Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | Office visit | 99211 |
23 |
| Administration of pneumococcal vaccine | Billing code | G0009 |
20 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
16 |
| Transitional care management services for problem of at least moderate complexity | Office visit | 99495 |
16 |
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.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 21 related providers in 3 groups
Trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 5
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine, inactivated 8
Providers in IL who bill this service to Medicare most often.
Common questions
What does Dr. Nau specialize in?
Dr. Nau is an internal medicine in Chillicothe, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Nau located?
Dr. Nau is listed at 311 N 4TH ST, Chillicothe, IL 61523. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Nau's phone number?
The number on file is (309) 274-4336. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Nau's NPI number?
Dr. Nau's National Provider Identifier is 1104023092. 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 Dr. Nau go to medical school?
Dr. Nau attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Nau been practicing?
Dr. Nau has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Nau do most often?
According to Medicare billing data, Dr. Nau provides treatments such as influenza vaccine, inactivated and routine electrocardiogram using at least 12 leads with tracing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Nau confirmed this information?
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.