DR. MARIO HIM MING CHAN (M.D.) – Endocrinology, Diabetes & Metabolism Physician, NPI 1104975176
Endocrinology, Diabetes & Metabolism Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
457 ENDOCRINOLOGY in IL
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Provider Addresses for DR. MARIO HIM MING CHAN (M.D.)
2101, South Arlington Heights Road, Arlington Heights, Elk Grove Township, Cook County, Illinois, 60005, United States
111
ARLINGTON HEIGHTS, IL 600054185
Phone: (847) 228-3200
Fax: (847) 228-3740
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 430 Open Payments records for all available years, with a total value of $11,577.
Total Amount is formed as General ($11,577) + Research ($0) + Ownership ($0) = $11,577.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: Lilly USA, LLC ($1,776).
Total Amount
$11,577
General + Research + Ownership
Payments
430
Total payment records
General Amount
$11,577
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $1,776 |
| Dexcom, Inc. | $1,585 |
| OPKO Pharmaceuticals, LLC | $416 |
| Corcept Therapeutics | $403 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $388 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-11-11
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20101111000705 | I | Endocrinology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 537 | 315 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 481 | 90 | $0 |
| 95251 | Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report | 99 | 60 | $0 |
| 76536 | Ultrasound scan of head and neck soft tissue | 84 | 83 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 80 | 69 | $0 |
Insurance plans in this area (ZIP 60005)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| - | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| - | OH | |
| Internal Medicine | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Endocrinology, Internal Medicine | IL |
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