Mario Him Ming Chan, M.D.
NPI 1104975176ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Arlington Heights, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with Suburban Endocrinology and Diabetes, practicing in Arlington Heights, Illinois. Their prescriptions cost Medicare Part D more than their services did: $1,576,916 for 3,294 claims, against $146,605 paid for services in 2024. Corcept Therapeutics was the largest of 37 companies reporting payments in 2025, $6,972 in all, mostly food and beverage. Lists Advocate Good Shepherd Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1104975176 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 9, 2007 |
| Last updated in NPPES | Jun 11, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036104346 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 490 |
|---|---|
| Services billed | 1,969 across 24 procedure codes |
| Paid by Medicare | $146,605 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,294 · 8,793 30-day fills |
|---|---|
| Patients | 424 |
| Total drug cost | $1,576,916 |
| Generic share | 49% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Suburban Endocrinology and DiabetesArlington Heights, IL · 8 clinicians
Hospital affiliations
- Advocate Good Shepherd HospitalBarrington, IL
- Advocate Lutheran General HospitalPark Ridge, IL
- Alexian Brothers Medical Center 1Elk Grove Village, IL
- Northwest Community Hospital 1Arlington Heights, IL
- St Alexius Medical CenterHoffman Estates, IL
Industry payments (Open Payments)
- 2025$6,972 · 220 payments from 37 companies
- 2024$5,294 · 212 payments from 33 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $914.08 | 20 |
| Lilly USA, LLC | $822.74 | 27 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $527.95 | 8 |
| Neurocrine Biosciences, Inc. | $496.42 | 12 |
| Dexcom, Inc. | $486.83 | 10 |
What the 2025 payments were for
- Food and Beverage$6,972 · 220 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Arlington Heights
- 1780879866
- 1033214549
- 1942305313
- 1780003368
- 1912586876
- 1285693127
- 1932279635
- 1235386160
- 1023167004
- 1013065556
- 1518186824
All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Illinois →