DR. LAWRENCE C CHAO (MD) – Cornea and External Diseases Specialist Physician, NPI 1700812997
Cornea and External Diseases Specialist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,665 OPHTHALMOLOGY in CA
Provider Addresses for DR. LAWRENCE C CHAO (MD)
1955 Sunny Crest Dr Ste 120
Fullerton, CA 928353653
Phone: (949) 679-2426
Type: Location
Alton Parkway, Irvine Spectrum, Irvine, Orange County, California, 92618, United States
SUITE 102
IRVINE, CA 926065024
Phone: (949) 679-2426
Fax: (949) 679-2616
Type: Mailing
2500 ALTON PKWY STE 102
IRVINE, CA 926065032
Phone: (949) 679-2426
Fax: (949) 679-2616
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 24 Open Payments records for all available years, with a total value of $9,619.
Total Amount is formed as General ($9,619) + Research ($0) + Ownership ($0) = $9,619.
Last reported payment date: 2024-12-11 • Largest payer in this snapshot: Alcon Vision LLC ($7,209).
Total Amount
$9,619
General + Research + Ownership
Payments
24
Total payment records
General Amount
$9,619
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $7,209 |
| Alcon Research LLC | $2,000 |
| RxSight Inc | $303 |
| Bausch & Lomb Americas Inc. | $55 |
| GlaxoSmithKline, LLC. | $32 |
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: 2006-10-03
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 |
|---|---|---|---|---|
| I20061003000277 | I | Ophthalmology | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 567 | 450 | $0 |
| 92014 | Established patient complete exam of visual system | 284 | 275 | $0 |
| 66984 | Removal of cataract with insertion of prosthetic lens | 197 | 123 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 190 | 134 | $0 |
| 92136 | Measurement of corneal curvature and depth of eye | 122 | 122 | $0 |
Insurance plans in this area (ZIP 92835)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPHTHALMOLOGY | CA | 92012 | Eye and medical examination for diagnosis and treatment, established patient | 75 | 66 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| O P T O M E T R Y | CA |
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