DR. ROY S HWANG (M.D.) – Neurological Surgery Physician, NPI 1134418965
Neurological Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
464 NEUROSURGERY in PA
Provider Addresses for DR. ROY S HWANG (M.D.)
17920 NEWBROOK AVE
CERRITOS, CA 907038948
Phone:
Type: Mailing
701 OSTRUM ST STE 602
FOUNTAIN HILL, PA 180151184
Phone: (484) 526-3569
Type: Location
305 N MANGOUSTINE AVE STE 100
SANFORD, FL 327711004
Phone: (407) 833-7505
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 81 Open Payments records for all available years, with a total value of $4,401.
Total Amount is formed as General ($4,401) + Research ($0) + Ownership ($0) = $4,401.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: Boston Scientific Corporation ($1,988).
Total Amount
$4,401
General + Research + Ownership
Payments
81
Total payment records
General Amount
$4,401
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Boston Scientific Corporation | $1,988 |
| Abbott Laboratories | $815 |
| Medtronic, Inc. | $775 |
| Nevro Corp. | $611 |
| DePuy Synthes Sales Inc. | $89 |
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: 2021-10-07
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 |
|---|---|---|---|---|
| I20180724000102 | I | Neurosurgery | PA | TBD |
| I20211007001847 | I | Neurosurgery | 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 |
|---|---|---|---|---|
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 46 | 46 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 38 | 29 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 30 | 26 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 20 | 19 | $0 |
Insurance plans in this area (ZIP 90703)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | NY | |
| N E U R O S U R G E R Y | NY | |
| Nurse Practitioner | FL | |
| Physician Assistant | FL |
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