MARY LEONG (O.D.) – Optometrist, NPI 1003968249
Optometrist
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
3,909 OPTOMETRY in CA
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Provider Addresses for MARY LEONG (O.D.)
Sand Creek, Antioch, Contra Costa County, California, 94531, United States
ANTIOCH, CA 945318687
Phone: (925) 813-3280
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 6 Open Payments records for all available years, with a total value of $738.
Total Amount is formed as General ($738) + Research ($0) + Ownership ($0) = $738.
Last reported payment date: 2024-09-19 • Largest payer in this snapshot: Alcon Vision LLC ($386).
Total Amount
$738
General + Research + Ownership
Payments
6
Total payment records
General Amount
$738
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $386 |
| Bausch & Lomb Americas Inc. | $249 |
| Oyster Point Pharma, Inc. | $103 |
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: 2012-07-03
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 |
|---|---|---|---|---|
| I20120703000237 | I | Optometry | 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 |
|---|---|---|---|---|
| 92083 | Exam of visual field with extended testing | 13 | 12 | $0 |
Insurance plans in this area (ZIP 94531)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| O P T O M E T R Y | CA |
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