DR. ABRAHAM S.C. CHYUNG (M.D.) – Neurology Physician, NPI 1073590725
Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,479 NEUROLOGY in CA
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Provider Addresses for DR. ABRAHAM S.C. CHYUNG (M.D.)
10790, Rancho Bernardo Road, San Diego County, California, 92127, United States
SAN DIEGO, CA 921275705
Phone: (858) 824-5400
Type: Mailing
North Torrey Pines Road, La Jolla Farms, Torrey Pines, San Diego, San Diego County, California, 92093, United States
LA JOLLA, CA 920371027
Phone: (858) 554-8676
Type: Location
550 S BERETANIA ST STE 405
HONOLULU, HI 968132496
Phone: (808) 691-8866
Fax: (808) 691-8865
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 39 Open Payments records for all available years, with a total value of $964.
Total Amount is formed as General ($964) + Research ($0) + Ownership ($0) = $964.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Alexion Pharmaceuticals, Inc. ($230).
Total Amount
$964
General + Research + Ownership
Payments
39
Total payment records
General Amount
$964
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alexion Pharmaceuticals, Inc. | $230 |
| ABBVIE INC. | $131 |
| Eisai Inc. | $101 |
| Novartis Pharmaceuticals Corporation | $90 |
| Neurelis, Inc. | $67 |
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: 2024-03-13
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 |
|---|---|---|---|---|
| I20240313002158 | I | Neurology | HI | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 92127)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| NEUROLOGY | CA | 95910 | Nerve transmission studies, 7-8 studies | 27 | 27 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | HI | |
| Diagnostic Radiology | MD | |
| Internal Medicine | HI | |
| H O S P I T A L I S T | KY | |
| Nurse Practitioner | HI | |
| Interventional Radiology, Neurosurgery | MD | |
| Family Practice | NY | |
| Internal Medicine | HI | |
| Interventional Cardiology, Internal Medicine | MT | |
| Geriatric Medicine, Internal Medicine | HI |
Reviews
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