DR. SIAO-YI WANG (M.D.) – Internal Medicine Physician, NPI 1134540859
Internal Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
8,856 INTERNAL MEDICINE in IL
Provider Addresses for DR. SIAO-YI WANG (M.D.)
2160 S 1ST AVE
MAYWOOD, IL 601533328
Phone: (708) 327-2315
Fax: (708) 327-3319
Type: Mailing
4501 X ST STE 3016
SACRAMENTO, CA 958172229
Phone: (916) 734-5959
Fax: (916) 703-5265
Type: Mailing
2279 45TH ST
SACRAMENTO, CA 958171514
Phone: (916) 734-5959
Fax: (916) 703-5265
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $161.
Total Amount is formed as General ($161) + Research ($0) + Ownership ($0) = $161.
Last reported payment date: 2024-03-16 • Largest payer in this snapshot: Tempus AI, Inc ($161).
Total Amount
$161
General + Research + Ownership
Payments
1
Total payment records
General Amount
$161
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Tempus AI, Inc | $161 |
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: 2023-07-20
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 |
|---|---|---|---|---|
| I20230720001643 | I | Internal Medicine | CA | 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 |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 99 | 52 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 35 | 32 | $0 |
| 99205 | New patient office or other outpatient visit, 60-74 minutes | 34 | 34 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 60153)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | PA | |
| - | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Physician Assistant | IL | |
| Internal Medicine, Hospice/Palliative Care | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| - | CA | |
| - | CA | |
| A N E S T H E S I O L O G Y | WA | |
| Nurse Practitioner | CA |
Reviews
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