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- 612 Roxbury Rd, Rockford, IL 61107
About Dr. Maynard
Based in Rockford, IL, John C. Maynard, MD is listed in the NPI registry under nephrology. John graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 1978. According to Medicare claims data, John cared for 1,138 Medicare patients across 2,030 services. The services billed most often include chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month, 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', and subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes. NPI 1730180878 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (815) 227-8300
- Email not available
Practice Locations
612 ROXBURY RD
Rockford, IL 61107
Conditions Commonly Evaluated or Treated
Within Nephrology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Acid-base disorders
Anatomical conditions
Autoimmune conditions
Blood disorders
Blood pressure
Cysts and growths
Diabetes complications
Dialysis complications
Electrolyte disorders
Fluid retention
Genetic disorders
Hormone disorders
Infections
Inflammatory conditions
Kidney damage
Kidney failure
Kidney filter diseases
Lab abnormalities
Metabolic disorders
Multi-organ conditions
Structural kidney issues
Symptoms
Urine abnormalities
Urine symptoms
Vascular conditions
Vascular kidney issues
Procedures & services
Most searched procedures
Consultations
Diagnostic tests
Diagnostics
Dialysis
Dialysis access
- Dialysis Access Physical Exam
- Dialysis Catheter Removal
- Dialysis Fistula Repair
- Temporary Dialysis Line Placement
Diet and nutrition
Imaging
Infusions
Interventional procedures
Lab tests
- 24-hour urine test
- Comprehensive Metabolic Panel
- Kidney Function Blood Test
- Parathyroid hormone monitoring
- Urine protein check
- Urine sediment test
Medication management
- Active Vitamin D Therapy
- Resistant Blood Pressure Medication Adjustment
- Steroid Therapy For Kidney Inflammation
Medication therapy
- Acid reducer treatment for kidneys
- Phosphate binder therapy
- Potassium lowering treatment
- Red blood cell booster injections
- Water pill adjustment
Patient education
Prevention
Procedures
Specialized therapies
Supportive care
Surgical procedures
Transplant care
Vascular access
Procedures Most Often Billed to Medicare
2,030 services · 1,138 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist | Procedure | 36902 |
14 | Less often than most peers in Nephrology |
| Complete ultrasound scan behind abdominal cavity | Imaging | 76770 |
25 | As often as other peers in Nephrology |
| Home dialysis services per month (20 years or older) | Treatment | 90966 |
96 | More often than most peers in Nephrology |
| Ultrasound study of arm or leg veins with compression and maneuvers | Treatment | 93970 |
11 | Too few peers to compare |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
418 | More often than most peers in Nephrology |
| 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' | Billing code | G2211 |
353 | More often than most peers in Nephrology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
327 | More often than most peers in Nephrology |
| Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99439 |
238 | More often than most peers in Nephrology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
233 | More often than most peers in Nephrology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
91 | More often than most peers in Nephrology |
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 kidney specialists at this location 8
Same specialty, same street address — most likely the same department or group.
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.
More connections — 22 related providers in 3 groups
Trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 6
Other providers in the same specialty who trained at the same institution.
Class of 1978 at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist 8
Providers in IL who bill this service to Medicare most often.
Common questions
What does Dr. Maynard specialize in?
Dr. Maynard is a kidney specialist in Rockford, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nephrology”.
NPI registry
Where is Dr. Maynard located?
Dr. Maynard is listed at 612 Roxbury Rd, Rockford, IL 61107. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Maynard's phone number?
The number on file is (815) 227-8300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Maynard's NPI number?
Dr. Maynard's National Provider Identifier is 1730180878. 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. Maynard go to medical school?
Dr. Maynard attended University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb), graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Maynard been practicing?
Dr. Maynard has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Maynard do most often?
According to Medicare billing data, Dr. Maynard performs procedures including insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist; reads or performs imaging such as complete ultrasound scan behind abdominal cavity; provides treatments such as home dialysis services per month and ultrasound study of arm or leg veins with compression and maneuvers, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Maynard confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Maynard. If this is you, claiming it is free.
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