John Maynard, MD
Nephrology Physician · Rockford, IL
John Maynard, MD is a nephrology physician with a practice address in Rockford, Illinois, and NPI 1730180878, issued on Aug 10, 2005. Check the license (Illinois 036066422, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Maynard
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 036066422 IL
Self-reported in NPPES; status is on the state search - Practice location
- 612 Roxbury RD, Rockford, IL 61107
- Phone
- (815) 227-8300
- Enumerated
- Aug 10, 2005
- Entity
- Type 1 · individual
Also registered at 612 Roxbury RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kathleen Capriola, APNAdult Health Clinical Nurse Specialist1710975891
- Solab Chitrakar, MDStudent in an Organized Health Care Education/Training Program1750934584
- Stephanie Gile, APNNurse Practitioner1598216657
- Jacqueline May, NPRegistered Nurse1699715706
- Muamer Mulasmajic, APNNephrology Physician1326526716
- Charlene Murdakes, MDNephrology Physician1992961593
Verify John Maynard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036066422Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
34% fewer Medicare Part D claims than the average nephrology physician in 2024
1,004 Medicare Part D claims for 232 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Lisinopril145 claims
- Terazosin Hcl104 claims
- Furosemide102 claims
- Calcitriol82 claims
- Losartan Potassium79 claims
- Atenolol49 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital or facility affiliation
- Rna OF Rockford, PLLCRockford, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Illinois
There are 463 nephrology physician records in Illinois.
Other nephrology physician records in Illinois
- Momen Abbasi, M.D.Chicago, IL1184472268
- Pabitra Adhikari, MDChicago, IL1427629740
- Bhavani Adusumilli, MDSpringfield, IL1568792604
- Nidhi Aggarwal, M.D.Chicago, IL1740368208
- Vikram Aggarwal, M.DChicago, IL1316235583
- Akansha Agrawal, MDChicago, IL1396280905
- Fayzan Ahmad, MDChicago, IL1376005835
- Mashood Ahmad, MDRockford, IL1043232846
- Sarmad Ahmad, DOChicago, IL1952979775
- Naila Ahmed, MDJoliet, IL1447368949
Common questions
What is John Maynard, MD's NPI number?
John Maynard, MD's National Provider Identifier (NPI) is 1730180878, issued on Aug 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Maynard, MD located?
The NPPES record lists a practice address at 612 Roxbury RD, Rockford, IL, 61107. Phone: (815) 227-8300. Providers update this record themselves, so call before visiting.
How can I verify John Maynard, MD's license?
NPPES lists Illinois license number 036066422, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Maynard, MD prescribe under Medicare Part D?
In 2024, John Maynard, MD had 1,004 Medicare Part D claims for 232 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.