Doctor profile · Federal record
Dr. Fen Jiang, MD
Medical Oncology Physician (CMS: Medical Oncology) · Medical Oncology Physician · Mission Viejo, CA
- NPI 1831312289
- Accepts Medicare
- 30 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
27799 Medical Center RD Ste 460
Mission Viejo, CA 926916400
(949) 347-0600
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- August 19, 2022
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 207RX0202X — NUCC code
- State licenses (2)
- California #A97283 · Washington #MD60176134
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831312289. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,440
Distinct HCPCS
10
Medicare allowed
$118,301
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 264 | 95 | $7 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 263 | 90 | $192 | |
36415 |
Insertion of needle into vein for collection of blood sample | 239 | 96 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 191 | 105 | $136 | |
80053 |
Blood test, comprehensive group of blood chemicals | 170 | 61 | $10 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 122 | 122 | $235 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 39 | 12 | $16 | |
96372 |
Injection of drug or substance under skin or into muscle | 34 | 15 | $16 | |
82728 |
Ferritin (blood protein) level | 18 | 17 | $13 | |
83540 |
Iron level | 18 | 17 | $6 |
In context: peer comparison
Among 1 peers in Mission Viejo Medical Oncology Physician, average services per provider: 90. This provider delivers 16× the peer median.Open Payments
Industry payments received
All-time total
$4,237
Transactions
88
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novartis Pharmaceuticals Corporation | 22 | $1,344.49 | |
| Merck Sharp & Dohme LLC | 15 | $470.25 | |
| AstraZeneca Pharmaceuticals Lp | 10 | $327.71 | |
| Incyte Corporation | 5 | $120.80 | |
| Takeda Pharmaceuticals U.S.A., INC. | 4 | $118.72 | |
| Daiichi Sankyo INC. | 4 | $107.49 | |
| Abbvie INC. | 4 | $94.36 | |
| Pfizer INC. | 4 | $85.88 | |
| Janssen Biotech, INC. | 3 | $75.20 | |
| Astellas Pharma US INC | 3 | $73.58 | |
| Genentech USA, INC. | 3 | $70.97 | |
| Array Biopharma INC | 4 | $69.71 | |
| Regeneron Healthcare Solutions, INC. | 2 | $65.97 | |
| PharmaEssentia USA Corporation | 2 | $65.68 | |
| Lilly USA, LLC | 3 | $61.44 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
422
Patients
171
Total drug cost
$45,743
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Anastrozole | Generic | 100 | 47 | $3,458 |
| Prochlorperazine Maleate | Generic | 46 | 33 | $527 |
| Ondansetron Hcl | Generic | 37 | 24 | $443 |
| Lidocaine-Prilocaine (Lidocaine/Prilocaine) | Brand | 33 | 23 | $751 |
| Dexamethasone | Generic | 32 | 20 | $178 |
| Creon (Lipase/Protease/Amylase) | Brand | 25 | 0 | $22,980 |
| Clobetasol Propionate | Generic | 19 | 12 | $609 |
| Pantoprazole Sodium | Generic | 19 | 0 | $223 |
| Prednisone | Generic | 19 | 0 | $237 |
| Letrozole | Generic | 18 | 0 | $486 |
Hospital affiliations
Frequently asked questions
What is Dr. Fen Jiang's medical specialty?
Dr. Fen Jiang practices Medical Oncology Physician in Mission Viejo, CA.
Where does Dr. Fen Jiang practice?
Dr. Fen Jiang practices at 27799 Medical Center RD Ste 460, Mission Viejo, CA 926916400. Office phone: 9493470600.
What is Dr. Fen Jiang's NPI?
Dr. Fen Jiang's National Provider Identifier (NPI) is 1831312289, issued by NPPES.
Does Dr. Fen Jiang accept Medicare assignment?
Yes. Dr. Fen Jiang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Fen Jiang commonly perform?
Top Medicare-reported procedures in 2023: Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (HCPCS 85025); Established patient office or other outpatient visit (HCPCS 99215); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.