DR. NGUYEN DUC DANG (M.D.) – Hospitalist Physician, NPI 1679671622
Hospitalist Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for DR. NGUYEN DUC DANG (M.D.)
18644 Oaklawn Ln
Yorba Linda, CA 928867027
Phone: (714) 701-8016
Type: Location
PO BOX 15090
ANAHEIM, CA 928035090
Phone: (714) 772-8282
Fax: (714) 772-6493
Type: Mailing
404, W La Palma Avenue, Anaheim, Orange County, California, 92801, United States
ANAHEIM, CA 928012806
Phone: (714) 772-8282
Fax: (714) 772-6493
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 25 Open Payments records for all available years, with a total value of $633.
Total Amount is formed as General ($633) + Research ($0) + Ownership ($0) = $633.
Last reported payment date: 2024-12-09 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($147).
Total Amount
$633
General + Research + Ownership
Payments
25
Total payment records
General Amount
$633
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GlaxoSmithKline, LLC. | $147 |
| E.R. Squibb & Sons, L.L.C. | $130 |
| Bayer Healthcare Pharmaceuticals Inc. | $115 |
| Lundbeck LLC | $48 |
| Grifols USA, LLC | $26 |
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: 2005-08-25
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 |
|---|---|---|---|---|
| I20050825001065 | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 572 | 167 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 189 | 179 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 152 | 147 | $0 |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 46 | 15 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 33 | 19 | $0 |
Insurance plans in this area (ZIP 92886)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Internal Medicine | CA | |
| Internal Medicine | CA | |
| Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| - | CA | |
| H O S P I T A L I S T | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA |
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