John Maynard, MD
NPI 1730180878 · Nephrology Physician · Rockford, IL
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Maynard, MD is a Nephrology Physician provider in Rockford, IL (NPI 1730180878).
Provider details
- NPI number
- 1730180878
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036066422 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,030 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 418 | $63 |
| 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'SG2211 | 353 | $16 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 327 | $80 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 238 | $48 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 233 | $126 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 145 | 50 |
| Terazosin Hcl | 104 | 38 |
| Furosemide | 102 | 39 |
| Calcitriol | 82 | 28 |
| Losartan Potassium | 79 | 30 |
| Atenolol | 49 | 15 |
| Ergocalciferol (vitamin D2)brand: Vitamin D2 | 48 | 16 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-10
- Last updated
- 2011-04-22
Frequently asked questions
- What is John Maynard's NPI number?
- John Maynard's National Provider Identifier (NPI) is 1730180878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Maynard's specialty?
- John Maynard is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is John Maynard located?
- John Maynard's practice location on file with NPPES is 612 Roxbury Rd, Rockford, IL 61107-5089.
- What is John Maynard's phone number?
- The practice phone number listed in the NPPES registry for John Maynard is (815) 227-8300.
- Does John Maynard accept Medicare?
- John Maynard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Maynard's NPI active?
- Yes — John Maynard's NPI (1730180878) is active in the NPPES registry as of the last update on 2011-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.