Diana Chen, MD, MBA
Addiction Medicine · Oakland
- Medicare standing
- 1 flag on the record
- Listed below.
- Plans that list them
- Not verified
- Not the same as out of network.
- Office
- 1
On the public record
- Medicare does not list them as allowed to order and refer
Offices
1 location
Plan participation
Not verified
We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Chen’s office at (510) 535-4400 to ask if they take your plan before you enroll.
California Medical Board record
Licence A188341 · Current
Licensed to practise in California · since 2023 · expires 2027-08-31 · Michigan State University College of Human Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Medicaid work
$46,280 in 2024
Medicaid paid $46,280 for 275 billed services this clinician did in 2024, up to 34 people in a month for one service.
Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.
| Clinic visit/encounter, all-inclusive | 131 | $45,273 |
| Return visit (30+ min) | 84 | $674 |
| Long return visit (40+ min) | 60 | $334 |
| 2024 | 275 | 3 | 34 | $46,280 |
Drugs they prescribed that Part D paid
$19,667
Pharmacies billed $19,667 in 2024.
This is pharmacy cost, not the office bill, and not what patients paid.
Opioids were 0% of their Part D prescriptions (0 of 225) in 2024. At or below the middle of the specialty; the typical family practice clinician is at 2%.
197 generic and 28 brand-name prescriptions · $19,667 in drug cost.
Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.
| Buprenorphine-Naloxone | 17 | $1,327 | $78 |
| Naltrexone | 11 | $581 | $53 |
| Duloxetine | 15 | $452 | $30 |
| Pregabalin | 14 | $381 | $27 |
| Gabapentin | 11 | $238 | $22 |
See all 7 drugs
| Buprenorphine-Naloxone | 17 | $1,327 | $78 |
| Naltrexone | 11 | $581 | $53 |
| Duloxetine | 15 | $452 | $30 |
| Pregabalin | 14 | $381 | $27 |
| Gabapentin | 11 | $238 | $22 |
| Mirtazapine | 12 | $107 | $9 |
| Atorvastatin | 15 | $60 | $4 |
Year by year
| 2024 | 225 | 47 | 0% (0) | 12% | $19,667 |
| 2023 | 580 | 85 | 0% (0) | None | $74,513 |
| 2022 | 332 | 47 | 0% (0) | None | $28,075 |
| 2021 | 161 | 33 | 0% (0) | None | $5,057 |
Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.
See the drugs prescribed each year
2023: 14 drugs
| Jardiance | 20 | $23,891 | $1,195 |
| Ozempic | 14 | $10,774 | $770 |
| Buprenorphine-Naloxone | 28 | $1,583 | $57 |
| Atorvastatin | 47 | $1,130 | $24 |
| Ventolin Hfa | 17 | $931 | $55 |
| Amlodipine Besylate | 29 | $434 | $15 |
| Enalapril Maleate | 16 | $391 | $24 |
| Gabapentin | 25 | $387 | $15 |
| Diclofenac | 26 | $327 | $13 |
| Nifedipine Er | 14 | $226 | $16 |
| Albuterol Sulfate Hfa | 12 | $219 | $18 |
| Metformin | 17 | $122 | $7 |
| Ibuprofen | 15 | $56 | $4 |
| Hydrochlorothiazide | 11 | $43 | $4 |
2022: 7 drugs
| Advair Diskus | 13 | $2,356 | $181 |
| Ozempic | 14 | $1,978 | $141 |
| Gabapentin | 15 | $386 | $26 |
| Atorvastatin | 24 | $366 | $15 |
| Diclofenac | 14 | $242 | $17 |
| Metformin | 11 | $69 | $6 |
| Ibuprofen | 17 | $44 | $3 |
Professional record
- NPI
- 1073136057
- Licence
- CA A188341California A188341: Current · expires 2027-08-31
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 207QA0401X (207QA0401X); Family medicine (207Q00000X)
- Mailing address
- 2950 International Blvd, Oakland, CA, 94601
- NPI first listed
- 2020-05-25
- NPI last updated
- 2026-07-30
- NPI record certified
- 2026-07-30
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 401 Quarry Rd Rm 2208, Palo Alto, CA, 94304