Chad C. Spangler, M.D.
NPI 1073625562ActiveIndividual· Internal Medicine, Gastroenterology· Lake Barrington, IL
Internal Medicine, Gastroenterology (M.D.) in Lake Barrington, Illinois, trained at Rush Medical College of Rush University (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $782,227 for 1,380 claims, against $166,035 paid for services in 2024. Janssen Biotech, Inc. was the largest of 21 companies reporting payments in 2025, $1,822 in all, mostly food and beverage.
Overview
| NPI | 1073625562 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 31, 2006 |
| Last updated in NPPES | Jun 28, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036116076 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 739 |
|---|---|
| Services billed | 1,178 across 53 procedure codes |
| Paid by Medicare | $166,035 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,380 · 2,476 30-day fills |
|---|---|
| Patients | 587 |
| Total drug cost | $782,227 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Gi Partners of Illinois PLLCLibertyville, IL · 39 clinicians
Hospital affiliations
- Advocate Good Shepherd HospitalBarrington, IL
- Advocate Illinois Masonic Medical CenterChicago, IL
- Advocate Sherman HospitalElgin, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine McHenryMcHenry, IL
Industry payments (Open Payments)
- 2025$1,822 · 73 payments from 21 companies
- 2024$1,169 · 50 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $285.35 | 10 |
| Abbvie Inc. | $237.99 | 12 |
| Madrigal Pharmaceuticals | $182.87 | 7 |
| Ipsen Biopharmaceuticals, Inc | $171.34 | 6 |
| Regeneron Healthcare Solutions, Inc. | $108.13 | 3 |
What the 2025 payments were for
- Food and Beverage$1,822 · 73 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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