John Wang, DO
NPI 1558511519 · Family Medicine Physician · Springfield, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Wang, DO is a Family Medicine Physician provider in Springfield, IL (NPI 1558511519).
Provider details
- NPI number
- 1558511519
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 37762 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
381 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 135 | $113 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 129 | $163 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 101 | $8 |
| Critical Care, First 30-74 Minutes99291 | 16 | $200 |
Typical Medicare-allowed amounts for these services range $8–$200 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Diclofenac Sodium | 45 | 45 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 34 | 34 |
| Prednisone | 26 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 24 | 24 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 22 | 21 |
| Ondansetronbrand: Ondansetron Odt | 22 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$60,235 across 83 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 905 Verdae Blvd Ste 101Greenville, SC 29607-4098Phone: (864) 286-7550Fax: (864) 286-7551
Registry dates
- Enumerated
- 2008-09-26
- Last updated
- 2021-11-16
- Certified
- 2021-11-16
Frequently asked questions
- What is John Wang's NPI number?
- John Wang's National Provider Identifier (NPI) is 1558511519, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Wang's specialty?
- John Wang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Wang located?
- John Wang's practice location on file with NPPES is 520 North Fourth Street, Springfield, IL 62794.
- What is John Wang's phone number?
- The practice phone number listed in the NPPES registry for John Wang is (217) 545-8000.
- Does John Wang accept Medicare?
- John Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Wang's NPI active?
- Yes — John Wang's NPI (1558511519) is active in the NPPES registry as of the last update on 2021-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.