MARGARET SIU-FOON LOH (MD) – Diagnostic Radiology Physician, NPI 1669438529
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,793 DIAGNOSTIC RADIOLOGY in CA
Provider Addresses for MARGARET SIU-FOON LOH (MD)
707 S GARFIELD AVE STE B001
ALHAMBRA, CA 918015864
Phone: (626) 227-2727
Fax: (626) 227-2799
Type: Mailing
7636 NE 4TH CT STE 101
MIAMI, FL 331385278
Phone: (904) 315-4955
Type: Mailing
1589 OAK GROVE AVE
SAN MARINO, CA 911081107
Phone: (650) 575-2062
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2022-11-03
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20050722000429 | I | Diagnostic Radiology | CA | TBD |
| I20221103002837 | I | Diagnostic Radiology | FL | 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 |
|---|---|---|---|---|
| 73721 | Mri scan of leg joint without contrast | 49 | 44 | $0 |
| 72148 | Mri scan of lower spinal canal without contrast | 43 | 42 | $0 |
| 73221 | Mri scan of arm joint without contrast | 23 | 22 | $0 |
| 72141 | Mri scan of upper spinal canal without contrast | 18 | 18 | $0 |
| 73718 | Mri scan of leg without contrast | 18 | 16 | $0 |
Insurance plans in this area (ZIP 91801)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | GA | |
| Diagnostic Radiology | VA | |
| Diagnostic Radiology | FL | |
| Diagnostic Radiology | FL | |
| - | FL | |
| - | FL | |
| Nuclear Medicine | FL | |
| Cardiovascular Disease (Cardiology) | FL |
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