DR. CHRISTOPHER KWAN HWANG (MD) – Ophthalmology Physician, NPI 1477973113
Ophthalmology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
444 OPHTHALMOLOGY in MO
Provider Addresses for DR. CHRISTOPHER KWAN HWANG (MD)
660 S EUCLID AVE
CB 8096
SAINT LOUIS, MO 631101010
Phone: (314) 362-3937
Fax: (314) 362-3725
Type: Mailing
517 S EUCLID AVE
DEPT OPTHALMOLOGY, 1ST FL
SAINT LOUIS, MO 631101007
Phone: (314) 362-3431
Fax: (314) 362-6564
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $38.
Total Amount is formed as General ($38) + Research ($0) + Ownership ($0) = $38.
Last reported payment date: 2023-09-12 • Largest payer in this snapshot: ACADIA Pharmaceuticals Inc ($38).
Total Amount
$38
General + Research + Ownership
Payments
2
Total payment records
General Amount
$38
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-09-12
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ACADIA Pharmaceuticals Inc | $38 |
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: 2022-09-06
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 |
|---|---|---|---|---|
| I20220906002895 | I | Ophthalmology | MN | 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 |
|---|---|---|---|---|
| J2777 | Injection, faricimab-svoa, 0.1 mg | 3,060 | 21 | $0 |
| 92134 | Imaging of retina | 1,306 | 538 | $0 |
| J0178 | Injection, aflibercept, 1 mg | 1,276 | 164 | $0 |
| 67028 | Injection of drug into eye | 834 | 267 | $0 |
| J2778 | Injection, ranibizumab, 0.1 mg | 317 | 19 | $0 |
Insurance plans in this area (ZIP 63110)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | OK | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | WV | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | MN | |
| O P H T H A L M O L O G Y | CA |
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