Doctor profile · Federal record
Dr. Wen-Kai Weng, MD, PHD
Hematology & Oncology Physician (CMS: Medical Oncology) · Stanford, CA
- NPI 1659428241
- Accepts Medicare
- MIPS 75.5 / 100 · 2023
- 38 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
300 Pasteur Dr, Bmt, Room H3249, Mc5623
Stanford, CA 943052200
(650) 723-4000
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- April 12, 2024
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #A67728
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659428241. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
335
Distinct HCPCS
4
Medicare allowed
$48,970
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 189 | 26 | $137 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 119 | 37 | $166 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 15 | 11 | $113 | |
99239 |
Hospital discharge day management, more than 30 minutes | 12 | 11 | $134 |
In context: peer comparison
Among 2 peers in Stanford Hematology & Oncology Physician, average services per provider: 90. This provider delivers 3.7× the peer median.Open Payments
Industry payments received
All-time total
$41
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Pfizer INC. | 2 | $41.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
130
Patients
18
Total drug cost
$6,180
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Acyclovir | Generic | 64 | 18 | $1,528 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 30 | 0 | $161 |
| Tacrolimus | Generic | 25 | 0 | $4,377 |
| Levofloxacin | Generic | 11 | 0 | $113 |
Hospital affiliations
Frequently asked questions
What is Dr. Wen-Kai Weng's medical specialty?
Dr. Wen-Kai Weng practices Hematology & Oncology Physician in Stanford, CA.
Where does Dr. Wen-Kai Weng practice?
Dr. Wen-Kai Weng practices at 300 Pasteur Dr, Stanford, CA 943052200. Office phone: 6507234000.
What is Dr. Wen-Kai Weng's NPI?
Dr. Wen-Kai Weng's National Provider Identifier (NPI) is 1659428241, issued by NPPES.
Does Dr. Wen-Kai Weng accept Medicare assignment?
Yes. Dr. Wen-Kai Weng accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Wen-Kai Weng commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.