HOA HIEU NGUYEN (M.D.) – Internal Medicine Physician, NPI 1427285394
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for HOA HIEU NGUYEN (M.D.)
16100 SAND CANYON AVE STE 240
IRVINE, CA 926183724
Phone: (949) 393-7443
Type: Mailing
18173 Santa Adela Cir
Fountain Valley, CA 927085608
Phone: (562) 412-8863
Fax: (562) 412-8863
Type: Location
18173, Santa Adela Circle, Talbert, Fountain Valley, Orange County, California, 92708, United States
FOUNTAIN VALLEY, CA 927085608
Phone: (562) 412-8863
Fax: (562) 412-8863
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $171.
Total Amount is formed as General ($171) + Research ($0) + Ownership ($0) = $171.
Last reported payment date: 2024-12-06 • Largest payer in this snapshot: La Jolla Pharmaceutical Company ($125).
Total Amount
$171
General + Research + Ownership
Payments
3
Total payment records
General Amount
$171
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| La Jolla Pharmaceutical Company | $125 |
| GlaxoSmithKline, LLC. | $23 |
| Bioventus LLC | $22 |
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: 2014-07-02
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 |
|---|---|---|---|---|
| I20140702001869 | I | Internal Medicine | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 92618)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physical Medicine And Rehabilitation | PA | |
| Internal Medicine | CA |
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