Active NPI 1104023092 Individual Practitioner Male Practitioner

Dr. Christopher William Nau , MD

Internal Medicine • Chillicothe, IL

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Dr. Christopher Nau, MD is a certified Internal Medicine practicing in Chillicothe, IL. With approximately 19 years of clinical experience since graduating from University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb) in 2007, Dr. Nau delivers high-quality medical care to the local community at 311 N 4TH ST.

Dr. Nau maintains professional affiliations with Heartland Community Health Clinic, Osf Multi-Specialty Group and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include established patient outpatient office visit, administration of influenza virus vaccine, vaccine for influenza for injection into muscle. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

311 N 4th St

Chillicothe, IL 615232059

Telephone 3092744336

Fax 3092743120

Medicare Profile & Education

Medical School

University Of Illinois College Of Med (Chi/peor/rock/chm-Urb)

Graduation Year

2007

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Chillicothe, IL

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

19 Yrs -2.0 yrs vs City Avg

City Avg: 21.0 Yrs

State Avg: 28.9 Yrs

Regional Practice Density

2 Specialists

Practicing in Chillicothe, IL (7544 Statewide)

Telehealth Adoption Rate

50.0% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount

51.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Nau (19 Years) 19 Yrs

Chillicothe Specialty Average (21.0 Years) 21.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	331	216	$293.85	$122.36
99213 Established patient office or other outpatient visit, typically 15 minutes	84	63	$207.90	$86.12
G0008 Administration of influenza virus vaccine	70	69	$33.94	$31.15
90653 Vaccine for influenza for injection into muscle	60	60	$75.00	$73.50
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	23	23	$50.00	$5.82
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	23	19	$59.83	$21.58
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	20	20	$482.00	$291.16
G0009 Administration of pneumococcal vaccine	20	20	$33.00	$31.15
99495 Transitional care management services for problem of at least moderate complexity	16	11	$595.00	$196.29
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	16	16	$138.00	$123.44
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	15	15	$152.00	$50.74
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	11	11	$49.00	$15.89

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	372	209	$282.00	$122.26
36415 Insertion of needle into vein for collection of blood sample	218	164	$29.00	$8.34
99213 Established patient office or other outpatient visit, typically 15 minutes	111	83	$200.00	$86.88
G0008 Administration of influenza virus vaccine	83	82	$32.98	$29.66
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	78	78	$74.90	$73.40
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	30	27	$50.00	$5.80
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	30	24	$56.00	$21.72
G0009 Administration of pneumococcal vaccine	21	21	$32.00	$29.66
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	20	20	$450.00	$280.95
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	11	11	$138.00	$123.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	294	203	$270.68	$123.53
36415 Insertion of needle into vein for collection of blood sample	269	202	$27.58	$2.96
99213 Established patient office or other outpatient visit, typically 15 minutes	171	125	$192.02	$87.69
G0008 Administration of influenza virus vaccine	87	86	$31.95	$28.00
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage	69	69	$57.72	$56.57
0124A Fee covid-19 vac 13 res	31	31	$60.00	$36.95
0064A Adm sarscov2 50mcg/0.25mlbst	29	29	$60.00	$37.22
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	26	21	$55.12	$21.88
G0009 Administration of pneumococcal vaccine	23	23	$30.78	$28.15
0004A Fee covid-19 vac 1 res	18	18	$60.00	$37.22
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	18	18	$26.89	$21.03
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use	15	15	$487.60	$278.43
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	14	14	$138.64	$125.65
99496 Transitional care management services for problem of high complexity	14	14	$741.86	$267.44
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	14	14	$41.43	$5.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	343	234	$27.00	$3.00
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	271	182	$266.00	$126.51
99213 Established patient office or other outpatient visit, typically 15 minutes	163	115	$174.15	$89.26
93793 Anticoagulant management of patient taking warfarin	99	11	$59.00	$11.15
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	70	70	$26.00	$20.52
G0008 Administration of influenza virus vaccine	69	69	$30.00	$16.21
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	28	28	$257.00	$107.03
0002A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; second dose	27	27	$60.00	$38.01
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	25	25	$130.16	$125.36
0001A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; first dose	20	20	$40.00	$38.01
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	18	16	$54.33	$21.65
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	14	13	$47.14	$6.14
G0009 Administration of pneumococcal vaccine	13	13	$30.00	$16.20
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$192.50	$123.92
81002 Urinalysis, manual test	11	11	$23.82	$3.48

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	368	231	$27.00	$2.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	247	166	$252.92	$105.92
99213 Established patient office or other outpatient visit, typically 15 minutes	137	98	$162.28	$73.00
93793 Anticoagulant management of patient taking warfarin	104	21	$59.84	$11.53
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	65	63	$26.00	$19.54
G0008 Administration of influenza virus vaccine	65	63	$29.14	$16.16
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	23	15	$52.96	$21.56
G0009 Administration of pneumococcal vaccine	22	22	$29.00	$16.13
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	20	20	$190.00	$119.12
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	15	15	$50.00	$7.71
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$250.85	$105.52

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	337	204	$27.00	$2.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	223	151	$241.69	$105.44
99213 Established patient office or other outpatient visit, typically 15 minutes	197	116	$153.67	$71.83
G0008 Administration of influenza virus vaccine	64	64	$27.95	$15.85
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	64	64	$25.95	$18.65
G0009 Administration of pneumococcal vaccine	22	22	$27.45	$15.85
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	16	12	$47.75	$21.54
81002 Urinalysis, manual test	15	14	$25.20	$3.41
90670 Pneumococcal vaccine for injection into muscle	15	15	$326.00	$208.35
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	11	11	$50.00	$7.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	305	210	$27.00	$2.94
99213 Established patient office or other outpatient visit, typically 15 minutes	219	125	$148.07	$70.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	186	124	$235.45	$103.82
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	75	21	$43.85	$20.52
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	72	12	$11.00	$1.81
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	64	60	$25.00	$18.65
G0008 Administration of influenza virus vaccine	61	57	$26.51	$19.39
G0009 Administration of pneumococcal vaccine	33	33	$25.91	$19.39
90670 Pneumococcal vaccine for injection into muscle	21	21	$308.29	$200.43
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	12	12	$157.50	$105.59
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing	11	11	$50.00	$7.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36415 Insertion of needle into vein for collection of blood sample	271	161	$26.30	$2.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	174	111	$229.01	$103.37
99213 Established patient office or other outpatient visit, typically 15 minutes	162	106	$143.45	$70.29
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	65	16	$41.52	$19.08
G0008 Administration of influenza virus vaccine	43	43	$25.00	$23.33
90686 Vaccine for influenza for administration into muscle, 0.5 ml dosage	42	42	$25.00	$18.65
G0009 Administration of pneumococcal vaccine	30	30	$25.00	$23.77
90670 Pneumococcal vaccine for injection into muscle	20	20	$295.00	$176.32
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	12	12	$353.50	$159.55
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	11	11	$146.00	$95.28

Medical Specialties & State Licenses

CMS Verified: 2025-02-04

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License IL 036125692

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Pediatrics

NUCC Taxonomy Code: 208000000X

State License IL 036125692

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Hospital & Practice Group Affiliations

Heartland Community Health Clinic

1800 N Knoxville Ave, Peoria, IL 616033005

Phone: 3096807600

Osf Multi-Specialty Group

8600 State Route 91, Peoria, IL 616157829

Phone: 3096835050

Secondary Practice Locations

530 Ne Glen Oak Ave

Peoria, IL 616033133

Phone: 3096553000

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

3 Associated Practitioners

Bradley Bock , APRN, FNP-BC, FNP-C

Nurse Practitioner - Family

NPI 1023779402

Advanced Practice Registered Nurse, Family Nurse Practitioner (Board Certified), Family Nurse Practitioner (Certified)

Dr. Robert Riech , MD, MPH

Internal Medicine

NPI 1437225935

Doctor of Medicine (M.D.), Master of Public Health

Tim Vega

Family Medicine

NPI 1508956897

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events

📍

Updated Practice Location February 04, 2025

Registered at 311 N 4TH ST, CHILLICOTHE, IL 615232059 (Tel: 3092744336)

📍

Updated Business Mailing Address February 04, 2025

Registered at 311 N 4TH ST, CHILLICOTHE, IL 615232059 (Tel: 3092744336)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 04, 2025

Pediatrics (License #036125692 in IL)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 530 NE GLEN OAK AVE, PEORIA, IL 616033133 (Tel: 3096553000)

📍

Updated Business Mailing Address July 08, 2007

Registered at 605 N ASHLAND AVE, WEST PEORIA, IL 616044901 (Tel: 3096367128)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as CHRISTOPHER NAU, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Internal Medicine

🟢

Initial NPI Registration & Enumeration July 02, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Christopher Nau. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1104023092

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 02, 2007

Last Update: February 04, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

311 N 4th St

Chillicothe, IL 615232059

Phone: 3092744336

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.