Doctor profile · Federal record
Dr. Derek Phan, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Westminster, CA
- NPI 1073729588
- Accepts Medicare
- 21 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
9191 Bolsa Ave Ste 205
Westminster, CA 926835561
(714) 891-7035
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- October 7, 2009
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A99908
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1073729588. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$25
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 1 | $25.17 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,133
Patients
763
Total drug cost
$207,891
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 334 | 102 | $4,535 |
| Atorvastatin Calcium | Generic | 307 | 94 | $6,581 |
| Metformin Hcl | Generic | 205 | 60 | $2,967 |
| Rosuvastatin Calcium | Generic | 177 | 57 | $4,699 |
| Losartan Potassium | Generic | 176 | 56 | $3,237 |
| Metoprolol Succinate | Generic | 167 | 46 | $3,731 |
| Jardiance (Empagliflozin) | Brand | 110 | 32 | $169,004 |
| Pantoprazole Sodium | Generic | 99 | 54 | $1,334 |
| Triamcinolone Acetonide | Generic | 96 | 51 | $1,182 |
| Benazepril Hcl | Generic | 94 | 25 | $1,691 |
Frequently asked questions
What is Dr. Derek Phan's medical specialty?
Dr. Derek Phan practices Internal Medicine Physician in Westminster, CA.
Where does Dr. Derek Phan practice?
Dr. Derek Phan practices at 9191 Bolsa Ave Ste 205, Westminster, CA 926835561. Office phone: 7148917035.
What is Dr. Derek Phan's NPI?
Dr. Derek Phan's National Provider Identifier (NPI) is 1073729588, issued by NPPES.
Does Dr. Derek Phan accept Medicare assignment?
Yes. Dr. Derek Phan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.