NPI registry status
Active
2026 NPPES data Sports Medicine (Internal Medicine) Physician NPI 1730290198 M.D.
Verify on CMS → James John, M.D.
Sports Medicine (Internal Medicine) Physician in Willowbrook, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 299 in Sports Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
James John, M.D. is a Sports Medicine (Internal Medicine) Physician in Willowbrook, Illinois, listed in the federal CMS National Provider Identifier registry.
- #384
- Sports Medicine (Internal Medicine) Physician rank among Illinois specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about James John, M.D.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1730290198), first enumerated 08/31/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not James John, M.D.'s individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare John with other Sports Medicine (Internal Medicine) Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Illinois
- Dr. Stephen Adams, MD Chicago, IL
- Dr. Greta Bires, MD Chicago, IL
- Dr. Michael Fragen, MD Lombard, IL
- Dr. Michael Hanna, M.D. Chicago, IL
- Dr. Cynthia Labella, MD Chicago, IL
- Dr. Lara Lee, M.D. Chicago, IL
Other specialties in Willowbrook: Family Nurse Practitioner (77) · Physical Therapist (48) · Chiropractor (27) · Nurse Practitioner (21)
CMS NPPES provider registry desk
NPI 1730290198 · Sports Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1730290198
- ENUM-LEGACY 2006
- TAX-TRACE 299
- RX-NONE No Part D
- BOOK-THIN 11 in Illinois
- PHOTO-ENUM E Eichner, MD · 2006
◑
Board-eligible specialty (heuristic, not verified)
James John, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about James John, M.D.?
Quality data not reportedPrimary specialty
Sports Medicine (Internal Medicine) Physician
Specialty distribution in Illinois
How Sports Medicine (Internal Medicine) Physician compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Sports Medicine (Internal Medicine) Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1730290198 |
|---|---|
| Specialty | Sports Medicine (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/31/2006 |
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to James John, M.D.. To verify James John, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
More Sports Medicine (Internal Medicine) Physician in IL →
All providers in Illinois →
Compare specialties →
Sports Medicine (Internal Medicine) Physician Overview
How James John, M.D. fits within the Sports Medicine (Internal Medicine) Physician landscape nationally.
299
Sports Medicine (Internal Medicine) Physician Providers in US
44
States with Sports Medicine (Internal Medicine) Physician
1,220
Avg Claims per Provider
Nationwide Sports Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for John, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Sports Medicine (Internal Medicine) Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as John.
One of 11 Sports Medicine (Internal Medicine) Physician providers enrolled in Illinois, 10 are shown on this page.
Dr. Clark Rians
M.D.
Peoria, IL
Dr. Angelo Savino
M.D.
Libertyville, IL
Dr. Kathleen Weber
M.D.
Chicago, IL
Dr. Juraj Zahatnansky
MD
Aurora, IL
Compare Sports Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is James John, M.D.'s specialty? ▼
James John, M.D. specializes in Sports Medicine (Internal Medicine) Physician and practices in Willowbrook, Illinois. Credentials: M.D..
Where is James John, M.D. located? ▼
James John, M.D. is located at 545 PLAINFIELD RD, Willowbrook, IL, 60527. Phone: (630) 286-5300.
What is James John, M.D.'s NPI number? ▼
James John, M.D.'s National Provider Identifier (NPI) is 1730290198, issued on 08/31/2006.
How many Sports Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 299 Sports Medicine (Internal Medicine) Physician providers across 44 states in the US. The average Sports Medicine (Internal Medicine) Physician provider writes 1,220 Medicare Part D claims per year.
Does James John, M.D. accept Medicare? ▼
James John, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify James John, M.D.'s credentials? ▼
James John, M.D.'s NPI is 1730290198 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
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 August 2026.