DR. MICHAEL KAY YOON (M.D.) – Ophthalmology Physician, NPI 1124219332
Ophthalmology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,665 OPHTHALMOLOGY in CA
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Provider Addresses for DR. MICHAEL KAY YOON (M.D.)
PO BOX 10069
SAN BERNARDINO, CA 924230069
Phone: (909) 335-4188
Fax: (909) 796-3469
Type: Mailing
Ramsey Street, Banning, Riverside County, California, 92220, United States
BANNING, CA 922203051
Phone: (951) 845-0313
Fax: (951) 845-4143
Type: Location
1690 Barton Rd Ste 200
Redlands, CA 923734231
Phone: (909) 793-3311
Type: Location
PO BOX 35380
LAS VEGAS, NV 891335380
Phone: (702) 579-3203
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 $304.
Total Amount is formed as General ($304) + Research ($0) + Ownership ($0) = $304.
Last reported payment date: 2024-01-09 • Largest payer in this snapshot: Alcon Vision LLC ($304).
Total Amount
$304
General + Research + Ownership
Payments
9
Total payment records
General Amount
$304
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $304 |
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: 2009-06-03
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 |
|---|---|---|---|---|
| I20090603000531 | 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 |
|---|---|---|---|---|
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 288 | 168 | $0 |
| 92134 | Imaging of retina | 248 | 202 | $0 |
| 92083 | Exam of visual field with extended testing | 196 | 170 | $0 |
| 92014 | Established patient complete exam of visual system | 175 | 173 | $0 |
| 66984 | Removal of cataract with insertion of prosthetic lens | 44 | 31 | $0 |
Insurance plans in this area (ZIP 92423)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| U R O L O G Y | CA | |
| O P T O M E T R Y | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| Nurse Practitioner | CA | |
| - | CA | |
| - | CA |
Reviews
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