DR. CURTIS W SIU (MD) – Internal Medicine Physician, NPI 1386613081
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for DR. CURTIS W SIU (MD)
PO BOX 35380
LAS VEGAS, NV 891335380
Phone: (702) 579-3203
Type: Mailing
23521 PASEO DE VALENCIA STE 108
LAGUNA HILLS, CA 926533137
Phone: (949) 872-5227
Type: Mailing
24221, Calle de la Louisa, Laguna Hills, Orange County, California, 92653, United States
SUITE 400
LAGUNA HILLS, CA 926537638
Phone: (949) 465-8155
Fax: (949) 465-8159
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 9 Open Payments records for all available years, with a total value of $193.
Total Amount is formed as General ($193) + Research ($0) + Ownership ($0) = $193.
Last reported payment date: 2024-03-06 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($54).
Total Amount
$193
General + Research + Ownership
Payments
9
Total payment records
General Amount
$193
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-06
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2005-02-24
PECOS data refreshed: 2026-05-27
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 |
|---|---|---|---|---|
| I20050224000422 | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 638 | 211 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 558 | 195 | $0 |
| 80053 | Blood test, comprehensive group of blood chemicals | 437 | 188 | $0 |
| 80061 | Blood test, lipids (cholesterol and triglycerides) | 363 | 171 | $0 |
| 83721 | Ldl cholesterol level | 347 | 169 | $0 |
Insurance plans in this area (ZIP 89133)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | CA | 83036 | Hemoglobin A1C level | 173 | 74 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | CA | |
| Gastroenterology, Internal Medicine | CA | |
| Endocrinology, Internal Medicine | CA | |
| - | CA | |
| Nephrology, Internal Medicine | NV | |
| Internal Medicine | NV | |
| Family Practice | CA | |
| Nephrology, Internal Medicine | NV | |
| Internal Medicine | NV | |
| Internal Medicine | NV |
Reviews
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